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Crutchfield Bass Blockers

Pair of inline frequency filters (150 Hz cut-off)

Item # 007BB150

Protect your new car speakers from bass distortion and enjoy cleaner sound with Crutchfield's Bass Blockers.

Protect your new car speakers from bass distortion and enjoy cleaner sound with Crutchfield's Bass Blockers.

Top seller

Item # 007BB150

In stock
C$12.99

Other options

About the Crutchfield Bass Blockers

Eliminate bass distortion in your speakers

Protect your new car speakers from bass distortion and enjoy cleaner sound with Crutchfield's Bass Blockers. Each Bass Blocker handles up to 50 watts RMS with a 6 dB per octave roll-off. Here are some general guidelines for matching Bass Blockers to speaker size.

Eliminate bass distortion in your speakers

Protect your new car speakers from bass distortion and enjoy cleaner sound with Crutchfield's Bass Blockers. Each Bass Blocker handles up to 50 watts RMS with a 6 dB per octave roll-off. Here are some general guidelines for matching Bass Blockers to speaker size.

Speaker Size Cut-off Frequency

6-1/2", 5"x7"/6"x8" — 150 Hz

5-1/4" — 300 Hz

3-1/2", 4", 4"x6" — 600 Hz

These models come fitted with easy-to-use quick-slide connectors that make installation a cinch — no splicing or crimping needed.

The listed cut-off points are at 4 ohms. If you use 8-ohm speakers, the cut-off point is half the listed frequency. If you use 2-ohm speakers, the cut-off point is double the listed frequency.

Note: You can connect these Bass Blockers in either direction, as the built-in capacitors are not polarized.

READ LESS
  • pair of inline high-pass filters (150 Hz cut-off)
  • handle up to 50 watts RMS
  • 6 dB per octave roll-off
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # BASS-265

What's in the box:

  • Two 150Hz bass blockers (attached 6" speaker wires on either end terminated by male and female quick-slide connectors)

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Crutchfield Bass Blockers reviews

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More details on the Crutchfield Bass Blockers

Mark G.
The Crutchfield Bass Blockers replaces these items:

Product Research

Features

Bass Blockers: Bass Blockers stop speaker distortion caused by excessive bass relative to a speaker's bass output capability. They are especially useful with small diameter speakers and tweeters.

Crossover Point: The crossover point changes based on the speaker impedance.

Model 2 ohms 4 ohms 8 ohms
007BB150 300 Hz 150 Hz 75 Hz
007BB300 600 Hz 300 Hz 150 Hz
007BB600 1,200 Hz 600 Hz 300 Hz
007BB5000 10,000 Hz 5,000 Hz 2,500 Hz

Easy Installation: To install the Bass Blockers, slip the female connectors of the bass blocker onto the positive and negative speaker terminals of the new speaker, and plug the male connectors into the speaker wiring adapter harness' positive and negative leads. If you don't want to use the terminals, cut them off, cut the speaker lead at a convenient location close to the speaker, then splice the Bass Blocker into the positive and negative speaker leads and insulate the connections. Bass blockers are not directional, so the orientation of the Bass Blockers on the positive and negative speaker leads is not important. Polarity is important; the white wire is positive and the black wire is negative.

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Customer Q&A

28 questions already asked

Q
What kind of bass blocker do I need for 75 rms on midrange speakers. No subwoofer with system just the midrange speakers frequency 125HZ-12KHZ?
[ Jemduke  Nov 15, 2021 ]
3 answers
A
When you have a frequency range you would need to use a band pass crossover. I would probably try a 150hz base blocker as there have a roll off of 6dB and should give you the 125Hz.
[ Jason  Nov 22, 2021 ]
A
The RMS of the speakers doesn't matter. Usually with no subwoofer there is no reason to use bass blockers. Bass blockers are usually used to block bass frequencies from your midrange speakers, because the subwoofer would handle those frequencies instead. Another reason to use bass blockers is if the bass frequencies cause your speakers to distort at a volume level lower than your preferred listening volume. What frequency of bass blocker you use depends on what frequencies are causing your speakers trouble, and also your own preference. If your speakers are advertised with a frequency response of 125hz-12khz, then bass blocker at a frequency of 125hz may be suitable. I suggest you contact a Crutchfield representative, their always happy to help with product advice :)
[ Kevin  Nov 17, 2021 ]
A
150 hz is perfect for 6x9, 6.5, 5.25, 6x8
[ Efrem  Nov 16, 2021 ]
Q
I have a pair of Sony Sscs5 6ohm bookshelves that I want to take the lowest frequencies out of without too much trouble. The only specs listed are for 2-4-8 ohms. Would 6ohms be high passed at around 112Hz? Right in between the 4 and 8?
[ GregC  Jun 01, 2021 ]
1 answer
A
These have not been tested with a 6 ohm load to confirm the frequency cutoff that they will present. Based on the data we do know, I expect you are correct about the frequency they start blocking the audio. These only handle up to 50 watts RMS and you will want to check your receiver to make sure it does not exceed this RMS rating
[ Paul  Jun 15, 2021 ]  Staff
Q
Will these work well on old school MB Quart 5.25" QM130 4ohm speakers?
[ Cooper  Apr 30, 2021 ]
1 answer
A
Yes they will. Make sure Amp is set that way also
[ MARCUS  Apr 30, 2021 ]
Q
Will these work well on old school MB Quart 5.25" QM130 40-100watts 4ohm speakers?
[ Cooper  Apr 30, 2021 ]
2 answers
A
I don't see why not, if you want to cut off everything below 400 Hz.
[ Joseph  Apr 30, 2021 ]
A
Yes, they should work just fine, I use them on a old set of pioneer 3.5's in the dash. you may need to cut the connectors.
[ James Perconte  Apr 30, 2021 ]
Q
Does this work with a 6 ohm JBL home surround sound set up? I have Onkyo receiver running 110w per channel for JBL Stage A125C with A120, JVC surrounds, paired with Polk PSW10 sub. If possible, thinking I'd bass block everything but the sub. Thoughts?
[ goldmiserj  Mar 07, 2021 ]
2 answers
A
I'm not a 100% certain how well these would work at a 6ohm load as they are meant for a 4ohm car speaker. The bigger concern I would have is cutting the frequency off the high on the spectrum. You will likely lose midbass going that high and subwoofers tend to not reproduce the upper bass or snappier bass as well as well as a 6" or 8" driver does. I would recommend something at lower frequency cutoff of around 60-80hz. Hope that helps. Also depending on how advanced of a receiver you are using it may have an active crossover built in.
[ David  Mar 07, 2021 ]
A
If this is the same product as I ordered, no . 4ohm only.
[ MONTY  Mar 07, 2021 ]
Q
I purchased the jbl concert series f150 set up from Crutchfield. What bass blocker should I use on the front door 6x8 2 way speakers to eliminate the bass?
[ Blake  Nov 18, 2020 ]
2 answers
A
I honestly can't remember what level cut off I purchased, I believe that it was the 150kz , they worked perfectly for my problem of to much bass going into my infinity 6 1/2 speakers in the rear deck
[ MONTY  Nov 18, 2020 ]
A
In my opinion these would probably be a little to high of a cutoff point for 6x8's. I have mine on a set of 4" coaxials in my kick panels. I would recommend something with a lower cutoff frequency. They do work great for my application.
[ David  Nov 18, 2020 ]
Q
I have the jbl concert series setup for f150 that I bought from Crutchfield. What size bass blocker should I install on the front 6×8 2 way speakers to eliminate the bass?
[ Blake  Nov 18, 2020 ]
3 answers
A
I would go with the 150Hz
[ Binh  Nov 18, 2020 ]
A
Anything 150 hz would suffice.
[ Elias  Nov 18, 2020 ]
A
These work great if you plan on using a separate subwoofer. If not you may want to use a 60Hz cutoff.
[ Alan  Nov 18, 2020 ]
Q
I've been led to believe that the Volvo XC90 uses 8 ohm speakers wired in parallel, such that the amp 'sees' a 4 ohm system. In this configuration, is the bass blocker cutoff at the listed frequency, or half the listed frequency?
[ Rory  May 26, 2020 ]
2 answers
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  Jun 09, 2020 ]  Staff
A
The formula is f = 1 / (2*pi*R*C(in Farads)). If the load impedance is halved, the crossover frequency is doubled. However, most car speakers are rated 4 ohms, so if the capacitor is specified for a 4 ohm speaker, you will get 150Hz.
[ Seth J  May 26, 2020 ]
Q
What gauge ? is the wire
[ Cole  Apr 17, 2020 ]
2 answers
A
Not 100% sure, but I think is either 18 or 20
[ Carlos  Apr 29, 2020 ]
A
18 gauge.
[ Elias  Apr 29, 2020 ]
Q
Can I use these on an amplifier? I have the kenwood kac-m1824bt and it has no crossover feature. Thanks
[ Rommel  Mar 31, 2020 ]
1 answer
A
They're meant to attach to speaker. They work with amps, that's how i use them.
[ Brent  Mar 31, 2020 ]
Q
Would these work for home speakers as well? I have a subwoofer using a line out and separate amp with a variable crossover up to 160 and want to block the bass for my standard speakers.
[ Duane  Dec 09, 2019 ]
2 answers
A
These are not recommended for use with home speakers.
[ Calvin  Jan 08, 2020 ]  Staff
A
Yes, but only if the impedance of the home speaker is 4 ohm. If you connect these to am 8 ohm speaker, the frequency where the bass block begins is doubled, so you'll miss out on midbass. Google "high pass crossover table" for a more detailed discussion.
[ Michael  Jan 06, 2020 ]
Q
I need to block 80hz and below for my kicker ks series 6x9's. Which bass blocker do I need?
[ Dustin  Feb 26, 2019 ]
3 answers
A
Well crutchfield only has down to 150hz on blockers. If your set on 80 hz. Google 80hz bass blockers. Theirs 1 that is 80 hz. Parts express.
[ David Cook  Mar 01, 2019 ]
A
Maybe go higher than the 150's. I bought 2 pair however, after I put them in my front 6.5's I noticed that they didn't have any real effect so I never installed them in the rear.
[ Gary  Mar 01, 2019 ]
A
Hi, Dustin 6X9 is a good speaker and will handle good wattage, don't understand why do you want to use the speaker as a woofer.
[ Jose  Feb 26, 2019 ]
Q
Can I use these bass blockers on speakers that are 110 rms?
[ Danny  Oct 15, 2018 ]
1 answer
A
I dont no write direct to crutchfield people to help.
[ victor  Oct 15, 2018 ]
Q
Can I install these on 3 way kicker 6x9's?
[ Aaron  Apr 03, 2018 ]
4 answers
A
You can, but the 6x9s should be able to handle bass down to 60hz or so. I wouldn't use bass blockers on those unless you have something else to handle the lower frequencies. I use these on my dash speakers (3.5 inch) and let my 6x9s in the rear handle the bass.
[ Jeffery D.  Apr 04, 2018 ]
A
yes you can install them inline with a 3 way 6x9. However, if you do this, you will be limiting the performance of the mid and low range portion of the speaker. In most speaker set ups the bass blocker is used only in line with the tweeter, to limit the low range frequency from blowing the tweeter. Most Speakers designed for multiple ranges have individual limits in place for each of the ranges they cover. My suggestion would be to look at the specifications of the speakers you are looking at purchasing. Find out if they have built in limiters. If not, consider running a two way mid and low with a satellite tweeter.
[ mark  Apr 03, 2018 ]
A
Yes. But you wouldn't want to. It'll block all your bass and a lot of the midrange. I installed these on some little 3 inch full range dash speakers to get rid of the bass and such. They act like a kinda upper mid to high tweeter. With that being said. No, don't install them on 3 way speakers. Unless you wanna take 70% of your speakers capability away.
[ JAMES  Apr 03, 2018 ]
A
Of course
[ Phillip  Apr 03, 2018 ]
Q
I didnt word my first question right. If i had bass blockers hooked up to a car speaker would i be able to tap into the same speaker and still get the line output converter to play bass for my aftermarket sub?
[ Jonte  Jan 26, 2018 ]
1 answer
A
It would be recommended to use a different speaker-level signal to your aftermarket sub/amp than the speakers you have connected to bass blockers. For more details or to discuss further, please contact an Advisor directly by phone (888.955.6000) or online chat. Thanks!
[ Larry  Feb 05, 2018 ]  Staff
Q
I am going to get the Kicker 44KSC3504 in the dash and the doors are going to be 44KSC6504. Do I need these and what frequencies?
[ jared  Jan 26, 2018 ]
1 answer
A
Yes, if your dash and door speakers don't have a crossover. I used factory wiring so my dash speakers were getting the same signal as my door speakers. Installing the 150hz blockers made a positive difference in qualit of sound. I'm very glad I took this step.
[ Drew  Jan 31, 2018 ]
Q
Can you use these with a line output converter hooked up to subwoofers?
[ Jonte  Jan 17, 2018 ]
4 answers
A
I don't think they are designed for use with a "line level" signal, They will cut the low end "< 150Hz" to an amplified signal. I use them to protect my smaller dash speakers from frequencies below their ability.
[ Brian  Jan 23, 2018 ]
A
you could but they block the bass frequency, so if you are hooked up to subwoofer then you will only get the high frequencies. not what you want for a sub.
[ BRIAN  Jan 22, 2018 ]
A
I can't see why not but why would you want to block low frequencies to a speaker designed for low frequencies? Btw, crutchfield has excellent support, give them a call and they'll get you set up right.
[ Phillip  Jan 22, 2018 ]
A
You can use these with any signal. However, be cautious to the speaker you are directing them to as they will affect the output. For example a 150hz bass blocker on a subwoofer would be pointless. But, if you use it for a 6.5" coaxial it would make sense. The point is to minimize low frequency extremes on smaller speakers to maximize output.
[ Rodrigo  Jan 22, 2018 ]
Q
I have 4" separates i plan to run with 6x9's. Should these bass blockers be inserted before or after the Component speaker 2-way crossovers?
[ DAN  Aug 20, 2021 ]
2 answers
A
Bass blockers go on the speaker itself to block the bass frequencies to that speaker.
[ JAMES  Aug 21, 2021 ]
A
You only want to install them to block bass on speakers that are too small to handle the bass such as the 3 1/2" speakers I installed in my dash.
[ MICHAEL  Aug 20, 2021 ]
Q
Would these work on kicker 2 way 4x6 powered by Pioneer avic-6200nex?
[ mrdoorman0000  May 10, 2020 ]
1 answer
A
Yes they would work on this setup providing your speakers aren't powered past 50W
[ Daniel  Aug 11, 2021 ]
Q
If my front tweeters are wired with my 2 Front Door Speakers, do I need to purchase another set for the front speakers and connect the set I already bought to the tweeter wires before they merge with the door speaker wiring?
[ Chris  Nov 23, 2019 ]
1 answer
A
These bass blockers should only be connected to your door speakers. They are not appropriate for protecting your tweeters from low frequencies. If your tweeters are factory equipment they should already have a passive crossover in place, so you only need the one set of bass blockers. If you have aftermarket tweeters you should use the supplied crossovers that came with the aftermarket tweeters and connect them to the door speakers.
[ Brian  Nov 23, 2019 ]
Q
My application (2021 Tacoma fronts, non-JBL) uses two parallel wired 4 ohm speakers (dash & front door). I am looking for a 600 Hz cutoff for the dash speaker, can you confirm that I need to use 600 Hz bass blockers or does the parallel wiring require 300 Hz blockers to result in a 600 Hz cutoff?
[ rdw59565  Sep 28, 2021 ]
2 answers
A
the 600 Hz bass blockers I purchased and installed work very well - i installed them with my 2-way speakers I installed in the front dash of my truck to allow the 3-ways I installed in the doors to transmit and handle the bass notes properly - definitely consider them
[ FREDRICK  Sep 28, 2021 ]
A
wiring in parallel will have nothing to do with frequency cut off, it will only affect ohm's. your stock speakers probably had cut offs built in.
[ joseph  Sep 28, 2021 ]
Q
I have 2007 Denali a pillar tweeters and I need to know what crossover or bass blocker to use?
[ Michael  Sep 17, 2020 ]
1 answer
A
Hi Michael, we will be happy to assist you, however, we will need a little more information regarding your vehicle, as well as the tweeters that you will be installing. Please give us a call at 1-800-324-9695, or chat with us online! We look forward to working with you.
[ Jess  Oct 02, 2020 ]  Staff
Q
Can I use these bass blocker for a Kicker 4ohmns 2.75 dash speaker?
[ Jcmolina  Aug 03, 2020 ]
4 answers
A
I use them for a 3.5-inch dash speaker. Makes a world of difference. More of mid and highs, balancing out all 6 speakers in my ram 1500. Well worth it.
[ paul  Aug 03, 2020 ]
A
I used this for my dash speakers that are the same size but not kicker. They work great especially if your dash speakers are anything like mine are. They were super distorted before putting this product in.
[ Ruari  Aug 03, 2020 ]
A
Yes they will work well. I used them in line with my dash speakers. I cut the wires off the speaker harness that came with the order and soldered the bass blockers to the speaker harness.
[ DAVID  Aug 03, 2020 ]
A
Yes, that's what I used them for.
[ Philip  Aug 03, 2020 ]
Q
i have JBL Club 3020 3-1/2" 2-way car speakers will these work better than the 270 microfarad capacitors that came with the speakers?
[ g  Mar 08, 2020 ]
1 answer
A
Thank you for your question. Using the included capacitors that come with the JBL Club's would be recommended, but depending on your overall need or sound performance, you may wish to use the Crutchfield Bass Blockers. Please chat with an Advisor online or by phone at 1-800-324-9695. We will be happy to go over your system, and help you decide on the best course of action.
[ Jess  Mar 24, 2020 ]  Staff
Q
I have 2 speakers that are 4" but run at 8ohms. The other 2 are 4x6s and run at 4ohms. I see that these are rated at 600hz at 4ohms. What do you suggest I use for the speakers running at 8ohms?
[ SparkieV  Nov 10, 2018 ]
1 answer
A
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss the compatible options. They will be able to determine if everything will integrate and help you make the best decision for your system and your budget.
[ Kenny  Nov 17, 2018 ]  Staff
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