Chat
Contact us
Close contact box
Connect ID #
672 374 43
Connect ID #
672 374 43
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

All of our representatives are
currently chatting with other customers.

Please enter your name.  
Please enter a valid email address. Why is this required?
Please enter your US phone number.  

For Tech Support, call 1-888-292-2575

Thank you, !
Our conversation will be emailed to
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Alpine KTP-445A Power Pack

Compact upgrade amplifier for your Alpine receiver — 45 watts RMS x 4

Item # 500KTP445A

Find what Fits your car

Top seller

Item # 500KTP445A

In stock
C$269.00

About the Alpine KTP-445A Power Pack

Alpine Authorized Online Dealer

More power for your Alpine receiver

Want a simple way to kick up the power of your Alpine receiver? Alpine's "Power Pack" amplifier increases your Alpine receiver's power output to 45 watts RMS power by 4 channels — plenty of power to drive high-performance speakers or keep up with a big subwoofer amplifier.

Product highlights:

What's in the box:

  • Head Unit Power Pack (15A fuse installed)
  • 39" Amp-to-receiver harness (male 16-pin connector on each end)
  • 31" Amp-to-vehicle harness (male 16-pin connector on one end and a female 16-pin connector on other end)
  • 2 Brackets
  • 4 Screws
  • 4 Wire-ties
  • Installation Diagram
  • Online Product Registration
  • Limited Warranty Information

Customer reviews

Loading reviews...

Alpine KTP-445A Power Pack reviews

Average review:

284 reviews

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

<< >>

Product Research

Features

Overview: The Alpine KTP-445A Head Unit Power Pack is an easy-to-install power upgrade amplifier that allows you to add higher output and more dynamic response to your Alpine head unit. The KTP-445A amplifies your Alpine head unit's power output, resulting in a 150% power increase over the original power from the head unit's built-in amplifier.

Notes:
  • If the fuse protecting the OEM radio is less than 15 Amps, you should run a separate +12V constant power wire from the battery to the higher-powered Alpine KTP-445A.
  • The Alpine Power Pack amp will not work in systems where an outboard factory amplifier is still active. If used in vehicles with a factory amplifier, the factory amp will need to be completely bypassed (this may result in lost speaker channels, if factory amp has more than 4 channels).
  • The increase in power may result in a louder warning chime in certain vehicles.

Compatibility: The KTP-445A connects to any 2005 and newer Alpine head unit that has a black 16-pin wiring harness. Please check with your Crutchfield Product Advisor to confirm compatibility.

45 Watt x 4 Channel Amplifier: The Alpine KTP-445A Head Unit Power Pack employs a 45 watt x 4 channel amplifier. The amplifier offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference. The end result is a 1 Watt Signal-to-Noise Ratio of 82dB or better. Uniquely, the amplifier distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion.

  • CEA-2006 Power Rating: 45 watts x 4 channels (at 4/2-ohms, 20-20kHz, 1% THD)
  • Max Power Output: 90 watts x 4 channels (Peak)

Note: The specifications given by Alpine for the built-in amplifier comply with the CEA-2006 mobile amplifier power testing and measurement standards from the CEA (Consumer Electronics Association). All manufacturers who comply with the standard can display the CEA-2006 logo on their product.

Installation: Since the KTP-445A is small and compact, it installs behind your Alpine head unit in the dash of most vehicles. Installation is simple with no special tuning. The 39" grey connector harness plugs into one end of the Head Unit Power Pack and connects to the rear plug on your Alpine head unit. The 31" black connector harness plugs into the other end of the Head Unit Power Pack and connects to your Alpine receiver's harness (included with your Alpine receiver). You will need to splice or crimp the wires from the Alpine receiver's harness to a Crutchfield vehicle harness adapter (sold separately).

Note: The factory radio circuit needs to be a minimum of 15A. If it is not, a separate power and ground will need to be installed for the KTP-445A

Loading accessories...

Customer Q&A

67 questions already asked

Q
Is this compatible with the i209-WRA? Have it in a 2015 Jeep JK.
[ Kenny  Jul 14, 2020 ]
1 answer
A
I'm sure it could be wired to work with your head unit since it is essentially a 4 x 50 watt amp in a small package. It has brackets so it can be perfectly mounted to the back of an iLX-W650 and still have a shallow installation depth. Forgo the brackets and you have a great amp that you can connect to your i209-WRA or any other car stereo. You just have to find a place to mount it. Considering it's small size, that shouldn't be too much of a challenge.
[ RAYMOND  Jul 14, 2020 ]
Q
Can I connect two of these for 8 speakers?
[ Mark D  Jun 30, 2020 ]
1 answer
A
Unsure but if possible will still have to make a custom harness to connect radio to amps
[ John  Jul 01, 2020 ]
Q
looking for the pin location on my amp. When I turn over the amp there is no pin location . Do I remove the cover to get to mine? the pix in reviews shows a location for pin switch and I want to check my pin settings. thanks Tom
[ THOMAS  Apr 06, 2020 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Apr 22, 2020 ]  Staff
Q
I was thinking of adding this to my Alpine ilx-207. When I add it to my cart I get a notification that I need to order a wiring kit for it. I didnt think it required a 12v line to the battery. I just want to make sure I am getting the right power pack and dont order anything unnecessarily. Will this power pack work with my setup?
[ Jeff  Mar 22, 2020 ]
2 answers
A
I did order the wiring kit and used it as directed overall just made it easier to hook everything up
[ william  Apr 09, 2020 ]
A
So, whether or not you need a separate power and ground is dependent on your vehicle. You should reach out to one of our advisors for more personalized help! https://www.crutchfield.com/support/ContactUs.aspx
[ Calvin  Apr 09, 2020 ]  Staff
Q
Will this run a pair of jl audio c1-650 door speakers or should I get something a little bigger?
[ Damon  Feb 17, 2020 ]
1 answer
A
It will work but suggest something a little stronger. This amp works good with speakers that are 25 watts rms rated.
[ Thanh  Feb 18, 2020 ]
Q
For 97 Supra does it need a separate battery connection for alpine amp?
[ M  Jan 29, 2020 ]
1 answer
A
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
[ Calvin  Feb 28, 2020 ]  Staff
Q
Will this combined with the Alpine ILX-W650 fit together in a 2011 Chevy Camaro convertible?
[ Thomas  Jan 15, 2020 ]
1 answer
A
As long as you can find somewhere to put the really long wires.
[ Jason  Jan 15, 2020 ]
Q
I have an aftermarket Alpine unit in my truck with Kicker speakers in the doors. It's plenty loud already. I'm looking for a little more base and sound quality at lower volume. Will this power pack do that?
[ Kevin  Dec 30, 2019 ]
5 answers
A
If you're currently powering the Kicker speakers with just your head unit, then absolutely this will give better quality sound and response at lower volumes. As for more bass, there are so many variables that influence this. However, the higher RMS rating of this amp will send more wattage to the speakers before introducing noticable distortion which should allow for you to adjust your bass levels as you see fit. Keep in mind though, if your speakers have a max RMS rating exceeding 2.5 - 3 times the max RMS of the amplifier, OR the speaker sensitivity at 1w@1 meter is on the lower end of 80-90 range, you should look for a more powerful amplifier. I have used amplifiers rated for twice what the speakers are rated for, and because the amp never clips, there are absolutely no problems. As an example, I'm still beating up the same pair of JL 12W1s since 1999 only having to replace the surround when it starts dry rotting.
[ Antonio  Jan 01, 2020 ]
A
The amp in itself won't give you more bass, but it will enable you to turn the bass level up without running out of power and damaging your speakers. I suggest enabling the loudness setting on your head unit. The loudness setting emphasizes the bass at lower levels and should improve your sound quality at a lower volume. Hope this helps!
[ Duane  Dec 31, 2019 ]
A
The power pack is good option if you are looking for a little more power and it is amazing. You will definitely notice difference in power output. As far as more bass output it will depend upon the size speaker, if you have anything smaller than 5 1/ 4inch you will not see much bass output. Also your on settings on your stereos EQ play a big part too. If you are looking for a little more bass in your truck and have room for a powered subwoofer. I would definitely go that route in my opinion a JL Audio single 8in or 10inch is more than enough.
[ Robert  Dec 30, 2019 ]
A
I added the unit in a Jeep Wrangler (2000 TJ) to drive fidelity across the range of low to high volume using an Alpine head unit. I was not looking for added bass. I am pleased that I got better fidelity and low distortion using this unit. I am using Polk audio speakers. Hope that helps a bit
[ Nicholas  Dec 30, 2019 ]
A
This unit does not change the tone of the sound coming out of your speakers, it just makes everything louder, if you want more bass in your speakers, you will need to add a subwoofer or change the EQ. However if you are using factory speakers and you start pumping more power to them with this amp, you could blow out the speakers because they are not designed to be blasted with tons of bass. If you really want better sound, then you should look at putting in new speakers and depending on how power hungry they are, adding an amp and a powered subwoofer to your system.
[ Travis  Dec 30, 2019 ]
Q
i want to use this to power my speakers with my alpine ilxw650 but i want to have a alpine mrv m250 for my subwoofer amp is this possible?
[ Christian  Sep 09, 2019 ]
1 answer
A
Yep, all of these components are compatible. One of out advisors would love to help you get all the right gear for you install! https://www.crutchfield.com/support/ContactUs.aspx
[ Calvin  Oct 03, 2019 ]  Staff
Q
Is this compatible, plug and play, with Alpine iLX-F309 HALO9 9"?
[ gordon  Aug 19, 2019 ]
1 answer
A
It is compatible with that headunit. There will be some wire connections that need to be made between the headunit harness and the vehicle integration harness. Depending on the vehicle, you may also need to run a dedicated power wire to the battery and a ground connection to the chasis. One of our advisors would be glad to help you get exactly what you need : https://www.crutchfield.com/support/ContactUs.aspx
[ Calvin  Sep 06, 2019 ]  Staff
Q
Will this work with my 2011 Ram 2500 factory Alpine system?
[ Fatfuck  Aug 16, 2019 ]
2 answers
A
I don't think so.
[ jerry  Aug 16, 2019 ]
A
No, this is for "aftermarket" alpine radios not factory decks.
[ Gary  Aug 16, 2019 ]
Q
Can the ktp-445A be bridged? I have a regular cab truck that only has door speakers.
[ Steve  Jun 28, 2019 ]
3 answers
A
I'm not sure I only have it connected to my door speakers, with a powered subwoofer.
[ Franklin  Jul 07, 2019 ]
A
I don't think so because it is a plug and play type of set up use for the alpine head unit.
[ jerry  Jul 04, 2019 ]
A
no, it's plug and play, unplug your alpine radio from the harness leading to the vehicle and just plug this in between, if you want the bridgeable unit you'll want the KTP-445U
[ Gary  Jul 04, 2019 ]
Q
I installed this amp on my 2003 Avalanche with an Alpine head unit. The truck came with the bose sound system. I have backpay noise coming through the speakers as I accelerate. The noise gets quieter if i touch the amp to a grounded metal part on the truck. The wiring is done correctly and I don't see any breaks in the wiring. How can I get rid of this noise? Thanks!
[ Christopher  May 19, 2019 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  May 29, 2019 ]  Staff
Q
will this work for a BMW 135i? my old alpine amp stopped working and I was wondering if this one could do the job. Thank you.
[ Amilt23  May 15, 2019 ]
2 answers
A
If your old Alpine amp is similar to these amp's RMS watts output and has the same number of channels as these do, then I expect the PDR-F50 amp will be able to work in place of it and be able to use the same wiring too. The KTP-445A amp only works in very specific applications that will have a compatible Alpine radio installed as well My Bio: https://www.crutchfield.com/bio/Paul
[ Paul  May 28, 2019 ]  Staff
A
The power pack is designed to work with alpine stereos, the pdr-f50 should be fine if you have low level outputs(RCA). If not, you will probley need a line output converter
[ john  May 27, 2019 ]
Q
hi,I want buy, but your item can shipping overseas?
[ Marc Loy  May 10, 2019 ]
1 answer
A
We do not ship over seas, Unfortunately.
[ Calvin  May 17, 2019 ]  Staff
Q
How do you mount this to the back of the iLX-650?
[ William  May 05, 2019 ]
1 answer
A
The amp doesn't mount to your receiver physically (as in bolt to it). The amp has a fairly long cord that plugs in to your receiver directly. The cord allows you to mount the amp wherever it will fit under the dashboard. My van had some space above the radio with a stout bracket at the top. The power pack amp was easily secured with a few good quality zip ties (cable ties, tie wraps, what ever you prefer to call them). This amp driving (4) Kicker speakers will cleanly play very loud, much louder than I have ever explored. Stated another way - i have never maxed it out. Very satisfied with my purchase.
[ JAMES  Jun 27, 2019 ]
Q
Can I use this with my Custom Autosound USA-230 radio?
[ Stuart  Apr 03, 2019 ]
1 answer
A
I do not think so. It comes with an adapter for inputs and power that ties in with other Alpine radios
[ Rick B  Apr 03, 2019 ]
Q
I just purchased a KTP-445A and a CDE-HD149BT, what is a good set of speakers to use with this setup?
[ Todd  Nov 26, 2018 ]
2 answers
A
That's a tuff question, not knowing what type of music you like and the make & model of your car. I always recommend JBL. I've used them in all my cars , My home theater and stereo music setups. Can't go wrong with JBL.
[ JOHN  Nov 28, 2018 ]
A
I bought this Alpine head unit as a replacement for a failed OEM unit and connected it to the speakers that came with the car. Coukd not be happier with the Alpine unit. As for the speakers, first find out what size your factory speakers are or what size speakers you can fit in your application, then buy the highest quality in that size that your budget allows. :)
[ Douglas  Nov 26, 2018 ]
Q
Alpine 265BT HU in a 2012 Altima, is this amp a plug and play??
[ Fletch  Sep 23, 2018 ]
3 answers
A
Not exactly sure what plug and play means for an amp. You do not have to run power or ground if that's what you mean. If you have an alpine head unit then it's pretty easy. The wiring harness that would plug into the back of the receiver plugs into the amp and there is an additional harness out of the amp that plugs into the receiver. I believe all that worked ok. The wiring bundles are pretty big and a little difficult to hide if you have a tight location.
[ paul  Sep 25, 2018 ]
A
Yes. Connect one wiring harness directly to your Alpine head unit and the other wiring harness directly to your cars speaker system. Both wiring harnesses are included and no additional wiring is required. There is no set up or adjustments necessary after installation.
[ Thomas  Sep 24, 2018 ]
A
Couldnt say for certain but I would expect so. I had a similar unit and it coupled right to the alpine harness, with an out that matched the older interface with the vehicle wiring. About a 30min job mounted for me
[ seth  Sep 24, 2018 ]
Q
I recently bought a vehicle with an Alpine CDA-9847 head unit and was wondering if this will plug into it?
[ John  May 03, 2018 ]
1 answer
A
A small package that does a great job and yes it fits, add a couple subs and an amp for them and you'll be smoking
[ MARTY R  May 03, 2018 ]
Q
Connect head unit to power pack,power pack to vehicle harness, eliminating the plug that you would normally connect to wiring harness from deck,how then does one use remote turn on from head unit and sub out?
[ David  Jan 12, 2018 ]
4 answers
A
I'm not sure what your asking. I bought an alpine deck with 2 preamp outputs along with this power pack. It does connect how you explained. Deck to power pack to wiring harness of vehicle. The kit through Crutchfield gives you a wiring harness which I believe is for the deck to the power pack (been awhile) If you are planning on hooking up an amp it cannot run through the power pack. It has to run through a preamp output. If this doesn't answer your question please ask me again. I'm willing to help out in anyway I can. Maybe word the question a little different.
[ vernon  Jan 15, 2018 ]
A
Splice in to the blue/white wire, that is the remote turn on.
[ Trent  Jan 12, 2018 ]
A
I still have my sub hooked up to them. Amp is separate for front and rear doors
[ cliff  Jan 12, 2018 ]
A
No, you don't eliminate wire harness from deck . The Alpine amp powerpack connect directly to the Alpine radio and the Alpine radio harness connect to output side of powerpack , then the radio harness to vehicle for remote ,speakers ,etc .
[ Miguel  Jan 12, 2018 ]
Q
I'm considering purchasing this and an Alpine deck. It says it's "plug and play", but what kind of wiring do I need to purchase along with this Power Pack? Or will it get connected using existing wiring? Thank you.
[ myrlyn29  Jan 04, 2018 ]
3 answers
A
Buy it and plug it in to the alpine deck. Nothing else to buy .
[ donna  Jan 05, 2018 ]
A
If purchasing alpine deck with power pack it will come with wire harness to plug into alpine deck. No wires to splice.harness is about 2 ft long so power pack can be mounted under console.
[ RON  Jan 05, 2018 ]
A
if memory serves, it comes with the cable to connect from the Alpine Deck to the Power pack. It was truly plug and play. Then you get a vehicle specific wiring harness and/or power button control for your vehicle - meaning for steering wheel controls and to make the power antennae work.
[ Gregory E.  Jan 04, 2018 ]
Q
will this work on a CDE 9881 alpine head unit?
[ James  Nov 04, 2017 ]
4 answers
A
I use it with my CDE 102 which is very similar and it works great. I was told by alpine that as long as the unit is 2005 and newer and has a black power harness, that the power pack works.
[ BRADY S  Nov 05, 2017 ]
A
I have the CDE 102, which is very similar and it works great. The information I received on the Power Pack says it works with most Alpine receivers after 2005 with a black power harness. Hope this helps.
[ BRADY S  Nov 05, 2017 ]
A
Hey James, I'm not sure about the 9881. I had one of those a long time ago and it was my favorite head unit. I now have a newer unit and I don't know if the plugs are exactly the same or not. I don't want to tell you it will work if I'm not 100%. I'm almost tempted to say it will but eh. They do offer a 445U, but you would have to wire it up. I wish I could help you more but I haven't seen a 9881 in a long time. ??
[ Travis  Nov 05, 2017 ]
A
That radio was built after 2005 so yes, it should work.
[ kevin  Nov 04, 2017 ]
Q
Will this work with a pioneer app 210 radio?
[ Jesse  Oct 17, 2017 ]
1 answer
A
No, This amplifier will only work with Alpine head units. Alpine does make 445U I believe that will work with stock head units and other after market head units as well. It has the same amount of power and is the same small size. I hope this answer will help you. I have never went wrong with Alpine products.
[ Cordie  Oct 19, 2017 ]
Q
I have this item and it is working fine. I know want to install a sex9nd traditional external amp. I know my head unit is capable but will I create a ground loop with the product working along with another amp?
[ Cornelius  Aug 30, 2017 ]
2 answers
A
Yes it works fine.
[ donna  Jan 05, 2018 ]
A
Goog question I'm not really sure, you could contact costumer service they should be able to help you.
[ Craig  Aug 30, 2017 ]
Q
My head unit is an alpine CDE-121. Is this unit compatible with the ktp-445a?
[ Frank  Jun 04, 2017 ]
2 answers
A
I believe so.
[ ANDREW  Jun 05, 2017 ]
A
Should be, it connects in line from the head unit toward your speakers , using the same connectors. I recommend it if you want good sounding loud music without installing an amp.
[ william  Jun 05, 2017 ]
Q
What awg wire is wired from the amp to hook into the factory speaker harness? I'm looking to require using 12awg. Thanks.
[ Greg  May 23, 2017 ]
4 answers
A
I installed this in my 97 Buick, I used all the factory wiring, upgrading to Rockford Fosgate speakers. I just used all the wires that came with the amp, I had no problems with distortion, even when my kid played his music loud. The harness is a bit long and required a little creative stuffing to get it to fit. Good luck
[ Pat  May 25, 2017 ]
A
No you don't need that heavy a gauge. It's overkill. The amp isn't that demanding. I used existing gauge, 16 I think. No problems whatsoever. It is not real loud but it certainly cleans up the music. I really like mine.
[ BRIAN E  May 25, 2017 ]
A
If you are using it with an alpine head unit it will have direct connect plugs. No extra wire is needed
[ James  May 25, 2017 ]
A
As I recall, there is no power connection required. Simply unplug the harness from the head unit, plug that harness into the amp, the plug the amp harness into the head unit. Done. Simple as that, and really worth the low price.
[ JW  May 24, 2017 ]
Q
static problems - after install, I get a lot of static out of my speakers. Any help to fix this?
[ Billy  May 22, 2017 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer, or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Kenny  May 22, 2017 ]  Staff
Q
Can this amp be used to make a center channel for the front. Thus using the left positive and the right negative. Then using the other 2 channels for rear fill?
[ Johnny  Apr 30, 2017 ]
2 answers
A
No, you cannot bridge the 445A, the 445U can be bridged
[ Gary  Jul 04, 2019 ]
A
Unless you can change the settings in the head unit, there is nothing on the amp that allows any changes at all. It is just in line with the speaker and power connector.
[ BENSON H  Apr 30, 2017 ]
Q
Were would one mount this amp in a 1999 Chevy Tahoe?
[ Khris  Dec 19, 2016 ]
5 answers
A
We put one in an 89 GMC Sierra Regular Cab. We replaced the factory head unit with an Alpine. There was plenty of room to secure this amp behind or under the head unit
[ Joseph  Dec 20, 2016 ]
A
Behind the radio on top of the duct work secure it with what u can i used two sided tape and made a brkt on a dash brkt
[ DONALD L  Dec 20, 2016 ]
A
I mounted mine behind an Alpine ILX-007 in the dash of a 2003 Silverado.
[ Clint  Dec 20, 2016 ]
A
It would fit behind the dash... that's the beauty of it.
[ MATTHEW  Dec 20, 2016 ]
A
I have an 02 silverado and was able to mount it under the console close to the cup holders
[ Jonathan  Dec 20, 2016 ]
Q
I have a factory subwoofer in my MY06 Forester that's no longer connected and I have an Alpine iLX-007E. Will this KTP-445A work with my factory speakers, and will the boost negate the need for a subwoofer to give me more bass?
[ Norton Chia  Dec 17, 2016 ]
1 answer
A
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
[ Kenny  Dec 17, 2016 ]  Staff
Q
will this work with an Alpine CDE-163 BT putting it into a street rod?
[ Karen  Nov 25, 2016 ]
3 answers
A
Yes
[ scott  Nov 26, 2016 ]
A
Not sure exactly what your asking here but that until will work with that radio. If your asking if it will fit in the car, it fits behind the stereo in my 03 f250. It is actually pretty small
[ Richard  Nov 26, 2016 ]
A
First off, unless you have plenty of sound deadening material installed, this may not be enough wattage to hear over the exhaust or the supercharger. Having said that, I cant see why it wouldnt.
[ shawn  Nov 25, 2016 ]
Q
Will this work with an Alpine UTE-52BT?
[ cjsoulek  Sep 19, 2016 ]
2 answers
A
Should work with all Alpine head units. It is a must have if you upgrade your unit. The wattage that comes with new head units is not enough by itself.
[ ryun  Sep 19, 2016 ]
A
Yes it will.
[ MICHAEL  Sep 19, 2016 ]
Q
Does this work with the alpine ine-s920 hd?
[ Hector  Aug 22, 2016 ]
1 answer
A
Yes should work just fine
[ kenneth  Aug 22, 2016 ]
Q
where would i hide the power pack in my fiero?
[ lowerider  Jul 31, 2016 ]
2 answers
A
Every car's dash space is different and I'm not familiar with the Fiero other than knowing that it's a midengine design. Does this mean that you have a trunk in the front and no firewall? Extend the wire harness if you need to and put the amp up there. I managed to sneak one of these amps behind the dash in my Miata. I had to use wire ties to secure it but it's in and doesn't rattle. The amp has generous wiring harness length and you should be able to find a place. The effort required to install it will be rewarded by the additional sounds you'll get from this amp. So, have you tried calling Crutchfield Support?
[ Pat  Aug 01, 2016 ]
A
I put both of them, ( ya, I bought 2 for 2 different vehicles) under the dash. I used zip ties and little hope. I used it in my daughters 2000 VW bug and my 98 Chevy pickup.
[ GENE  Aug 01, 2016 ]
Q
Can you hook up 2 of them together?
[ lou lou  Apr 08, 2016 ]
2 answers
A
I would not think so. With the plug and play, it is just that. It will amplify you door speakers. I would go the route of a bigger 4 channel amp if you feel the need of more power. I can tell you this little amp does a great job on my 4 door speakers.
[ COREY  Apr 09, 2016 ]
A
You can't hook 2 of them together.
[ terry  Apr 09, 2016 ]
Q
How will this work with a 2016 base V6 Mustang 6 speaker stereo? Wiring?
[ Ian  Mar 06, 2016 ]
2 answers
A
I did a quick check in Crutchfield and it appears the 6 speaker system is (2 front door speakers + 2 tweaters) and two rear deck speakers. Typically, the tweaters are fed off of a filter from that is between the door speaker and the tweater. As such, you still have a four channel system which is what the Alpine Power Pack is designed for. So, I think the Alpine amp will work with your system. My application for this amp was in an old Jeep to power the dash speakers and overhead speakers. I used a separate amp to power subwoofers. I'll have to qualify my answer in two ways. One, simply speaking, this amp will work, is relatively easy to install and can drive your stock speakers better than the stock unit can. Two, while this amp worked ok, I don't think it has enough power to drive really deep sound at moderate to high volume levels. I would recommend deriving low level signal outputs, and put a high quality 5 channel amp and replace the speakers. If you want to take it in steps, you could install the Alpine power pact and then add a separate amp/subwoofer later. Hope this helps.
[ Roger Daren  Mar 08, 2016 ]
A
If you are adding this to an existing sound system you might have problems. I installed this unit at the same time as a new Alpine radio. The wiring harness to the radio plugged right into the output of the amp, then the supplied cord plugged into the input end and into the radio. Unit was excellent, it was put into a Jeep Wrangler with the top off and had more than enough power to overcome road noise. You might have to do some creative wiring to a ford radio.
[ JAMES  Mar 07, 2016 ]
Q
I have a 2011 Chevy traverse LS with the oem radio, I just bought Polk audio speakers to replace all the doors... I wanted to know if this amp would help or if I even need it? Would it work with the stock radio?
[ Esteban  Mar 03, 2016 ]
6 answers
A
First off, there is two versions of the power pack. One is the KTP-445A for use with compatible Alpine head units. The other is KTP-445U which is universal. In your case, you want to use the universal power pack. *Will it help? Well, it's an amplifier, so it's gonna boost the power going to you're upgraded speakers and improve your overall sound and volume. (if they're installed properly) *Do you need it? Yes, if you want to experience the actual benefits of an aftermarket speaker, but they'll still work without it. *Will it work with the factory radio? It will if you hook it up correctly. I should mention that some (if not all) factory radios have a pre-programmed EQ, so the factory speakers can sound their best. In other words, they give out a modified signal, unlike an aftermarket radio which gives out a pure, untouched signal. There's products to address that, like the JL Audio Clean Sweep for example. But you should still be able to connect an Alpine Power Pack directly to the factory radio without one.
[ Gilberto  Mar 27, 2016 ]
A
It sure will.I was limited on space and this was a perfect fit and it powered up front and rear speakers which paired well with the 2 10 inch subs.The techs at Crutchfield are amazing.Enjoy the sound.--Marty
[ MARTY R  Mar 04, 2016 ]
A
It's plug and play with the Alpine head unit I purchased. I do not know if it is compatible with your stock radio. The Polk speakers will add quality to your sound, it won't add power to your system. My guess is that the oem radio is sufficient to most needs. The alpine amp is just a booster, not a full blown unit. Most later model automobile sound systems already have an amp bigger than the Alpine unit.
[ GARY  Mar 03, 2016 ]
A
This amp is specifically for Alpine receivers. It will not work with any other headunit. For a universal amp, try the KTP 445U amp. http://www.crutchfield.com/p_500KTP445U/Alpine-KTP-445U-Power-Pack.html
[ TYLER  Mar 03, 2016 ]
A
If you bought the universal version of this it will work with a stock radio. You will need to dplice into the factory wiring. You can tell a big difference with this littke amp
[ COREY  Mar 03, 2016 ]
A
Yes it will work. It is worth the money big time!
[ BRIAN  Mar 03, 2016 ]
Q
I was told that this amp can be used with KDCX300/Kenwood-Excelon? Is this true?
[ Tony  Feb 25, 2016 ]
2 answers
A
No, the 445A is alpine specific and will not plug into a kenwood deck, you'd want the KTP-445U
[ Gary  Jul 04, 2019 ]
A
My understanding is there are two versions of the power pack. I bought the version that mated with my alpine head unit. You want the general version. It added just enough to my setup to be a satisfying blend with my subwoofer.
[ Ronnie  Feb 27, 2016 ]
Q
Would purchasing an Audio Control LC6i with this make for a better install down the road when adding a mono amp to a sub?
[ David  Jan 27, 2016 ]
2 answers
A
I have a 2016 Honda Accord Sport. I am leaving the factory stereo. Is there plug and play harnesses for it?
[ griffin  Nov 07, 2019 ]
A
No. First of all; the Alpine KTP-445A model is for use with compatible aftermarket car stereos only. Unless you have a compatible Alpine, you'll need to use the KTP-445U model instead: http://www.crutchfield.com/p_500KTP445U/item.html This power pack offers "Speaker Level Inputs" so an external Line Output Converter is not required to get the audio signal into the amp. If you decide to add a subwoofer and the amp you select does not offer the speaker level inputs, you can use the Audio Control LC2i converter to supply signal (RCA) and remote turn-on for the amp: http://www.crutchfield.com/p_161LC2I/item.html I hope that helps! My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=5
[ Ryan  Feb 01, 2016 ]  Staff
Q
Will this work on a Pioneer AVH-X4700BS? Meaning will they simply plug into the Pioneer harness?
[ cbos1226  Jan 07, 2016 ]
3 answers
A
I am not sure. i bought mine to power a new Alpine receiver because it was definitely plug n play. I would check and see if they have a pioneer to alpine harness converter. At at the same time, i put the Alpine power pack in with the receiver, Crutchfield sent me a factory to alpine harness converter that made the receiver plug n play. Best i can offer.
[ VINCENT E  Jan 08, 2016 ]
A
I don't think so alpine does not have the same connector Enter an answer to this question.
[ MARK  Jan 08, 2016 ]
A
No it's a plug and play for alpine
[ DAVID  Jan 08, 2016 ]
Q
I want to install this with my OEM head unit (2015 RAM 1500 with 5" touchscreen) does this amp have high level inputs ? or do I need to cut down the signal from the HU?
[ lawrence  Dec 18, 2015 ]
2 answers
A
Just plug in and play
[ ALEX  Dec 26, 2015 ]
A
I would contact a Crutchfield advisor. While I think it is designed take take in a high-level input and should work with any speaker output on a radio, Alpine says it is designed to work with certain Alpine head units from 2005 and later. Honestly, I think you'd be better off with an Alpine 4-channel amp that you can install under the seat. Most of them can take a high-level input and will have better performance than the Power Pack. With either type of amp, you still need to run a power wire from the battery, so I don't think you're saving anything by choosing the Alpine Power Pack.
[ RICHARD  Dec 19, 2015 ]
Q
Hi there, my question is this alphine amp compatible to my head unit Pioneer DEX-X6700BS? Thank You..
[ Lynon  Dec 04, 2015 ]
1 answer
A
Yes. Your receiver has 6 sets of pre-amp outputs and will work great with this amp.
[ Jeff  Dec 04, 2015 ]  Staff
Q
I have a UTE52BT and just bought a KTP-445A to drive my infinity speakers. When I turn the volume up past 20 the sound cycles to 0 then up to 20. It then goes to 15 and stays there. I tried turning off the power IC. Anyone have this issue and how to fix it?
[ EWhite  Oct 05, 2015 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Krissy  Oct 05, 2015 ]  Staff
Q
How to install in a 2012 camaro using factory stereo?
[ Corry  Sep 22, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Sep 22, 2015 ]  Staff
Q
What is the difference between the KTP-445A and the discontinued KTP-445? I was looking at a newer model head unit which says it is compatible with KTP-445A. I already have the older KTP-445 and wondering if it will work or do I have to buy the newer power pack.
[ Cabot  Sep 20, 2015 ]
1 answer
A
Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget.
[ Krissy  Sep 20, 2015 ]  Staff
Q
will this amp connect to my f-150 xlt?
[ Gilbert  Jul 11, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Jul 12, 2015 ]  Staff
Q
It looks like adding the KTP-445a amp to my existing ilx-007 is pretty straight forward - just plug and play. How do I slide out the 007? The original install was done by a local shop and I don't think I received the "key" to uncle I the unit from the cage.. How can I slide out the 007?
[ Chris  Jul 08, 2015 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Krissy  Jul 10, 2015 ]  Staff
Q
will this amp work with a 2009 bmw 128 i factory wiring?
[ Big D  Jul 07, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Jul 07, 2015 ]  Staff
Q
OK, I have an Alpine stereo which will work with this amp, but it also has an "installation note" saying they recommend a direct battery connection. Which wire needs to be cut and spliced? Is this difficult? My Jeep Wrangler only has a 10amp factory fuse so guessing it is not going to work well if I keep it directly wired.
[ papakevin  Apr 04, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Apr 05, 2015 ]  Staff
Q
Hard to find a matching full set of speakers for my 2000 Dodge. (Aparently no Alpine will fit front doors.) I finally settled on 6X9 JBL front, 6 3/4 JBL back) All those speakers are 3 ohm. Anyone using this set up? Is Amp getting hot mounted behind deck in dash?
[ Max  Mar 30, 2015 ]
2 answers
A
Amp does not get hot...and I have it stuffed in the dash of a jeep tj. Great product. Would recommend. As far as speakers, I always go with a company that only makes speakers. Such as Infiniti or Polk audio. That's my preference.
[ LANCE E  Apr 07, 2015 ]
A
I installed mine in a 2008 F-150 and basically just laid it in the open space in the dash behind the CD receiver. I live in Florida and have experienced no issues with it in almost 2 years. Sorry, I can't speak about your impedance issue but it seems close enough to not matter.
[ GLENN  Apr 02, 2015 ]
Q
How can I use this with my 2007 Acura TL Type-S ?
[ Mr. Curious  Mar 18, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Mar 19, 2015 ]  Staff
Q
Would this amp go straight into a 2014 Malibu without the upgraded pioneer sound system or do you need converters of some kind? Thanks
[ Traykun  Feb 27, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Feb 27, 2015 ]  Staff
Q
Is this compatible with the new Alpine iLX-007 head unit?
[ RichT  Dec 02, 2014 ]
1 answer
A
I forwarded your question to an Advisor and they responded with the following: Yes, the KTP-445A amplifier is compatible with the Alpine ILX-007 head unit. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.
[ Krissy  Dec 05, 2014 ]  Staff
Q
can I use this amp with this reciver? Kenwood KIV-BT901
[ hami310  Nov 12, 2014 ]
1 answer
A
I forwarded your question to an Advisor and they responded with the following: No, you will not be able to use that particular model. You will need the Alpine KTP-445U (500KTP445U) to use with your Kenwood receiver. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.
[ Krissy  Nov 14, 2014 ]  Staff
Q
Can i only use this in alpine head units or is there a way to make this work in a kenwood head unit?
[ ryan310  Nov 12, 2014 ]
4 answers
A
I have been told it can be used with any unit but it requires knowledge of which wires go to which point. Alpine used to make a universal amp just like this one that had open wiring
[ JOEY  Nov 12, 2014 ]
A
You can make it work by way of a universal adaptor that crutch field sells
[ JOE  Nov 12, 2014 ]
A
You would need the wiring diagrams for both. But it should be possible, maybe with an adapter. The size of it makes it really convenient to hide.
[ BENJAMIN  Nov 12, 2014 ]
A
When I boug mine there were two different power packs. One works only with alpine units, the other works with any unit.
[ PHILIP M  Nov 12, 2014 ]
Q
I have this is there any way to adjust the gain and settings or is that only on the ktp 445u?
[ travis  Sep 20, 2014 ]
3 answers
A
Since I installed this over a year ago, I can't be for sure but I do not recall any form of channel adjustment on my model.
[ RANDY  Sep 21, 2014 ]
A
There aren't any gain settings on the unit itself Travis. It's just a straight 45 watts per channel to your speakers. The best sound will be if you have speakers that are matched to that. Or closely matched. I bought an entire package from crutchfield which included four infinity speakers that are around that wattage. I prefer to always buy speakers from a company that just manufactures speakers. Infinity, Polk audio, Altec Lansing, etc. Hope this message helped. Lance
[ LANCE E  Sep 21, 2014 ]
A
There are no adjustments settings on this amp. I will say that the default settings on this would be equivalent to a "high" setting on an amp that is adjustable. On my INE-S920HD head unit, before turning the head unit's gain to the lowest setting, the volume would max out at volume level 10 (the volume goes to 40 or 50). With the gain all the way down it screams at level 20. I am running this amp with eight speakers. 2 5" polk audio db501's per channel (8 speakers total at 2ohms per channel). This little amp is bomb proof, rock solid, and sounds amazing.
[ TONY M  Sep 21, 2014 ]
Q
Do you need an Alpine reciever to use this?
[ Ben  Sep 14, 2014 ]
6 answers
A
yes you do. the unit plugs into the alpine wire harness from the head unit. I would recommend buying a head unit wih this power pack it all works exellent together. No running power wires, speaker wires ect. if you purchase a traditional style amp. Hope this helps
[ CHRIS T  Sep 15, 2014 ]
A
No you do not you can either hard wire it to your receiver or buy an adapter plug the amp comes with directions on the wiring process that is very easy to understand
[ JOE  Sep 15, 2014 ]
A
No I run it off a JVC receiver.
[ DUSTIN J  Sep 14, 2014 ]
A
Nope, it has RCA type inputs for the preouts of any receiver. connects just like any other amplifier...
[ PAUL  Sep 14, 2014 ]
A
Yes u need an alpine receiver to use this
[ DEREK  Sep 14, 2014 ]
A
It only works with alpine
[ DAVID  Sep 14, 2014 ]
Q
I'm gonna install this in my All New Kia Picanto with Alpine CDE-123 head unit. I'm confuse with this statement in Product Overview section : "If your receiver's power circuit is not protected by a 15-amp or larger fuse, you'll have to run a separate power wire to the battery." In my car's manual, there's a table containing instrument panel fuses (driver side fuse panel). One of fuse labelled AUDIO with 20A rating. In my CDE-123 manual, there's a connection diagram. In the back of the head unit, there's a FUSE HOLDER (10A) just beside the power supply conector. Do I have to run a separate power wire to the battery? Is it : battery -> new power cable + 15A fuse -> KTP 445A -> Head unit ?
[ ferdinan  May 02, 2014 ]
4 answers
A
Good Morning, My installation did not require any seperate wire to the fuse panel or battery. I connected the amp to the factory wiring and the stereo (apline) to the amp. pretty simple install.
[ ALEJANDRO  May 03, 2014 ]
A
No, just plug it in and your fine
[ JASON  May 02, 2014 ]
A
No I did not run a separate wire, the radio power is fused. I have not had any issues.
[ KEVIN  May 02, 2014 ]
A
I'm confused in which fuse does the product overview refer to? Is it the 20A on instrument panel? or 10A on the Head unit fuse holder?
[ ferdinan  May 02, 2014 ]
Q
Hi there- My mazda has 6 speakers and 2 tweeters..will this power all ? Is there is max number of speakers it can support ? Any input is appreciated !!
[ Telugodu  Apr 25, 2014 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Apr 25, 2014 ]  Staff
Q
Spline cde-133bt produces a clipping signal on volume level 20 out of 35. So that would mean this too would clip sind thatlevelas well?
[ Batman  Apr 23, 2014 ]
2 answers
A
EQ settings are too high probably in the bass ranges and/or your speakers aren't rated to handle that much power
[ Gary  Jul 04, 2019 ]
A
im not sure
[ LAWRENCE  Apr 25, 2014 ]
Q
I ordered a power pack and I was curious if I could just plug it in and go or if I had to unhook my factory amplifier I have a 2010 dodge ram with alpine factory sound system. I updated to alpine receiver and 6.5 component alpine type e door speakers? Advice please?
[ David  Feb 27, 2014 ]
5 answers
A
You will have to bypass the factory amplifier to use this product. See the product research section on this product's page at Crutchfield's website.
[ RICHARD  Dec 19, 2015 ]
A
I would imagine the techs at Crutchfield could answer this better than I, but I believe you cannot connect amplifiers in tandem without some seriously advanced circuitry. The Alpine power pack should take care of your needs anyways, so go ahead and disconnect your factory amp.
[ BRAD W  Mar 03, 2014 ]
A
I baught one and i unplugged the wiring harness from the back of the stereo into the powerpack and then the powerpack to the stereo. It cannot be any easier.
[ VICTOR  Feb 28, 2014 ]
A
Hi David, I did not get to use this product. I bought it with the guidance of Crutchfield tech support and I feel I did not get the correct advise. when I bought the unit I gave the make and model of my car with some other details. Since I had done all the rewiring for the Alpine head unit before I was told that I could just plug it in line with my set up. What they overlooked was that I already had a factory installed amp. When I installed the power pack it blew out a couple of circuit breakers because both amps were on line. I disconnected the power pack and returned it and continue to use the factory amp with the Alpine head unit and it works great. Sorry I could not be more help.
[ FELIPE  Feb 28, 2014 ]
A
U cannot run a 2nd amp in your truck. ...short of some really fancy wiring that a electronics engineer would have to do some head scratch'n. My 99 dodge with the infinity system was a bleedn nightmare trying to hook it up. Finally, I pulled the amps(located on the speakers) replaced everything w after market wires, speakers, head unit, and amp. The good news is, you will absolutely love the sound. Best of all my trucks is the alpine amp setup. Good luck JJ
[ JACK  Feb 28, 2014 ]
Q
Will this work with the alpine CDE-HD148BT head unit?
[ bbbrock  Jan 31, 2014 ]
2 answers
A
I have an 07 gmc sierra classic. I'm going to purchase an alpine head unit to replace the factory radio. Will this power pack be compatible with my truck?
[ robby  Apr 20, 2014 ]
A
For details on compatibility or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Jan 31, 2014 ]  Staff
SHOW MORESHOW LESS

Loading articles...

TOP