Question about Kenwood KAC-749S Car Audio Amplifier

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Wiring Diagram I have a Kenwood KAC-749S 500 W 4/3/2 amp and need a wiring diagram that I can understand. I have 4 speakers and a subwoofer.

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Re: Wiring Diagram

First, try looking here: If that helps, be sure to leave feedback or I don't get paid. Look all over the cruchfield page and you can find guides for every type of installation.

Posted on Oct 03, 2007

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Need Wiring diagram for Kenwood amp #KAC-501

Installation instructions begin on page 9 of the manual.

Oct 16, 2012 | Kenwood Car Amplifiers

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I have a kac-8542 amp I want to bridge. What to set settings at for amp. I tired it once but seem real sloppy when I did but not any louder

It should have a diagram on the amp for bridging.....either on the bottom of the amp or the output of the speakers on the amp itself......if you have one sub you can wire it that way, if you have two subs you need to wire it wiring two sub bridged to an amp and it will have a diagram....hope this helps...let me know if it does...thanks...brian

Mar 23, 2012 | Kenwood Car Amplifiers

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I have a kenwood kac-9152d running a 10 inch rockford fosgate power t1 and the amp keeps going into protect but i have a smaller kenwood kac-8102d running on another t1 and i have no issues with it why...

either the wiring your running is short circuting,or the amp is shot, or the subwoofer is shot, try hooking the same speaker up to the other amp. along with the other speaker to the other amp, see if the same thing happens.

Feb 04, 2010 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Which are the differents diagrams to wire two sub dvc 4 ohms

I guess this Amp is stable down to 2 ohms. 500 Watts X 1. Unfortunately there is no way possible for you to present a 2 ohm load to the output of this amplifier. Here are your options.

Speakers in series with VC in parallel = 4 ohm total Z
Speakers in parallel with VC in parallel = 1 ohm total Z (not good)
Speakers in parallel with VC in series = 4 ohm total Z ( Whats the point)
Speakers in series with VC in series = 16 ohm total Z ( Whats the Point)

So your best option to maximize power transfer from your amp to your speakers would be option 1. (Z = Impedance)

Dec 13, 2009 | Kenwood KAC-8104D Car Audio Amplifier

1 Answer

When i hooked the amp up the it would blink red right when i turn the stereio on

this can be caused by a short or a non constant current from your head unit to your remote power wire on your amplfier (your remote wire might be broken some where). Or your amp is losing ground. also check your speaker wiring and so on. has a subwoofer wiring diagram for all occasions.... make very sure you are wired properly this can be killing your amp causing the light to dim and so forth...

Dec 11, 2009 | Kenwood KAC-9102D Car Audio Amplifier

1 Answer

No wiring diagram for amp

+ red power to battery
- black negative cable to body/ground
rem blue remote wire that connects to blue wire
on the back of your cd deck

Jul 05, 2009 | Kenwood KAC-7203 Car Amp

1 Answer


That amplifier is only stable to 2 ohms.
You will only be able to use one Dual 4 ohm Subwoofer wired in parallel (all + to + on amp.... all - to - on amp.
This will yield a 2 ohm mono load.

It is impossible to wire (2) dual 4 ohm voicecoils to achieve a 2 ohm mono load.

If you're set on using both subwoofers - they will not be getting as much power from your amplifier with a 4 ohm load - but it is your only option.

SEE THIS LINK for the wiring diagram.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Jul 02, 2009 | Kenwood KAC-8104D Car Audio Amplifier

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Jun 12, 2009 | Kenwood KAC-749S Car Audio Amplifier

1 Answer

My Kenwood KAC-929 gets power but DOES NOT put any sound out. Whats My Possible problem(s).

Hello Spicer_kyle6,

Possible problems: 1) No output from the head unit. Try a different set of preamp outs. 2) No input to the amp. Check the RCA's and make sure that they are good and coming from a functioning preamp or subwoofer output on the head unit. 3) Input gain turned off or down too low. 4) Speaker wiring shorted, grounded, or open. Check all wires. 5) Speakers defective. Connect to a known good output to test. 6) The amp itself could be defective and still show a power-on indication.

Hope this helps.

Apr 28, 2009 | Kenwood KAC-929 Car Audio Amplifier

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