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  Home > Car Audio & Video > Amplifiers, EQs & Processors > Amplifiers >

  Kenwood KAC-6404
  Kenwood KAC-6404 40W x 4 Car Amplifier
 
Enter the Crutchfield Research Centre & Video
4-channel car amplifier
40 watts RMS x 4



Stock Status: Discontinued


Product Code: 113KAC6404

Description Features Crutchfield Hands-on Research Accessories
 

Build your car audio system on a firm foundation of power. Kenwood amplifiers built their reputation on their rugged, no-nonsense reliability and superior sound quality. They feature efficient MOSFET power supplies and beefy internal components that provide an abundant source of clean, crisp sound at a great price.

Even high-quality speakers sound weak without enough power to support them. The KAC-6404 4-channel amplifier delivers 40 watts RMS per channel to your full-range speaker system, improving sound quality dramatically. This amp will bring new life to your factory speakers, but you'll really notice the difference when you pair this amp with new aftermarket speakers. You'll hear all the tonal colour, depth, and detail you've been missing, whether it's the slide of a finger on an acoustic guitar, or the subtle tones of your favourite singer's voice.

The KAC-6404 offers variable high- and low-pass filters that allow you to adapt the amp for different applications, including powering subwoofers. You'll also find preamp- and speaker-level inputs, so you can put this amp to work no matter what kind of system you have now.

 
Details:
   » 4-channel car amplifier
   » 40 watts RMS x 4 at 4 ohms (60 watts x 4 at 2 ohms)
   » 130 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
   » Channel A: 80 Hz high-pass filter (12 dB per octave)
   » Channel B: variable low-pass filter (50-200 Hz) at 12 dB per octave
   » 2-, 3-, or 4-channel output
   » Tri-way capable (Tri-Way Crossover required)
   » MOSFET power supply
   » CEA-2006 compliant
   » preamp- and speaker-level inputs
   » requires 8-gauge power and ground leads — wiring and hardware not included with amplifier
   » fuse rating: 25A x 1
   » 13-3/4"W x 2-3/8"H x 9-1/8"D
   » warranty: 1 year

Average Customer Rating: Based on 9 Reviews.


 
I Purchased this from Crutchfield a few weeks back May-28-11
Reviewer: Alex from Alabama  
I paired this with a Pioneer DEH-P47DH purchased from Crutchfield in 2009 to fit  my 1985 Trans Am. Two eXcelon 6x9's purchased in 2004 had never been used,  and I used those with two Alpine 4" SPS-410 front speakers purchased with my  KAC 6404 order. It wasn't too hard replacing the factory wiring and speakers, or  running all the needed extra cables - lots of 16 gauge wire mostly, other than  amp feeds and grounds.  

The sound of music has never sounded so sweet in my TA before. Turning up  the volume to the upper RMS wattage (40wx4) will literally run you out of the car  (the 6x9s have a 93 dB upper level and the 4" Alpines are rated 89 dB) - but the  music is crystal clear, and I even have very respectable bass from the 6x9s. For  a small interior, this KAC 6404 offers more than enough power if you've used the  right speakers, and it hardly gets warm in operation. Add another amp for deep  bass - like the old KAC 7201 I have bridged to a 12" eXcelon sub in a sealed box,  I hadn't used since purchase in 2004, and you've got a "killer" system. Well, you  will if you have a 140 amp alternator, a good healthy battery, and a 1 farad  capacitor installed like I also have. My restored custom 406 CI small block TA  was already a head turner, now it really gets approval from everyone hearing the  stereo. The experience in my Trans Am, now, is like being live onstage with the  band - even while driving.


 
Great AMP May-14-11
Reviewer: RickS from Denver, CO  
Sounds great!  Able to tune very easy.


 
Great Investment April-05-11
Reviewer: Jer from Bethlehem, PA  
Purchased this amp due to the lack of satisfaction I was having with my
aftermarket upgrades.  I have an 06 Subaru Impreza with a Clarion CZ500 head
unit and Boston Acoustics S55 speakers in the front doors and S45 speakers in
the back doors.
The amp was installed professionally and mounted under the drivers seat (plenty
of room).  There are also two floor vents that blow directly on it as well,
which will help the amp from overheating.  (Side note:I also ordered an
installation kit from Crutchfield.  If you are doing so, I would recommend
ordering another RCA patch cable as the kit only comes with one).
The sound is phenomenal.  The highs and mids are absolutely crisp and clear,
while you can still hear and  feel the bass coming from the 5 1/4" and 4 "
speakers. Prior to the amp, I had to have the radio set at 26 going down the
highway to hear it, 32 to enjoy it.  Now, I set it at 16 to hear it, and about
22 to enjoy it.  As for the iPod playing, superb!  I turn it up to 28 now and I
feel like my ear drums are going to pop.  And while I am a "rock" listener, must
say that country sounds really good being played with the components I have.  
If you want more from aftermarket speakers, then get an amp.  This one may not
be best suited for your setup, so have Crutchfield help you.  But again, one is
definitely worth your investment.


 
October-02-10
Reviewer: MIKE from port st lucie fl  
First of all the instruction  were very easy. Just installed it about two weeks ago.  This is  my first amp, and I would have to say the sound it puts out in my MR2 is great, being that  my car is small, no need  for blowing my ears out.  The mids and highs are great, I'm not  A big bass person. But I do wish it had just  A little more bass to it, But I'm sure having  only 4 inch JL in the rear had something to do with the  bass, but overall I'm very  happy with the amp.  I have JL speakers  6 1/2 in the front and 4 inch in the rear side  panels. If your more into the mids and high and not really into the bass then get this  amp. I also have to say Crutchfield support is great and will buy from them again. Chris  in support was great thanks for the help.


 
2002 cavalier August-21-10
Reviewer: Tyler from Abington Pa  
To start off i just bought a 2002 cavalier, and i wanted to upgrade my audio system so i got a full system. I got a Kenwood Excelon KDC-X494 headunit,  4x6 sps alpine speakers for the doors, 6x9 sps speakers for the rear, this Kenwood KAC-6404 4 chan amp for the speakers, a jh600 mtx mono block amp, and a JL Audio 12W3v3-4 subwoofer.    

I powered my alpine sps speakers with this amp, and it sounds great. I really like the sound, and i feel for the price this amp is great. It sounds even better because i added bass blockers to all the speakers because i have a subwoofer. I would completely suggest this amp to anyone.


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