Kenwood KAC-729S Car Audio Amplifier Logo

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Anonymous Posted on Dec 12, 2012

I have a kenwood kac-729s 600 watt amp. i've hooked everything up right and my amp will not so much as power on. what may the problem be besides it's no good

  • Anonymous Dec 12, 2012

    i have a 03 kia optima it still has it standard stock cd deck. cd player didn't have RCAs jacks so i bought the output level converter box and hooked it up to rear speakers and ran to amp. i've also tried the power to the remote thing as well while it was hooked up and it still never even turn the little light on top of the amp on.

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4 Related Answers

hoyzee1

  • 150 Answers
  • Posted on May 12, 2009

SOURCE: power amp wont power up

Check the fuses-should be a pair of 30 amps on the side. use a paper clip and jump power from the power+ to the remote+ and see if that lights it up-if it does than your remote lead isnt giving it juice-

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Frank Fulton

  • 1114 Answers
  • Posted on Jun 24, 2009

SOURCE: I have the kenwood kac-8104d amp and it lights up

Check your RCA's from the amp to the deck, make sure it's on an output not an input on an aftermarket deck,and the input, not the pass thru on the amp. If you have it hooked up to a factory deck, you've opened a whole new can of worms! If its a factory Deck; Post the make and model of the unit if you can find it, as well as the vehicle year make and model. I get as much info as I can on it and walk you thru the details. If it's aftermarket and you've checked the above, post the make and model of the deck and I'll do the same. Hope this helps

Anonymous

  • 655 Answers
  • Posted on Sep 20, 2009

SOURCE: Kenwood KAC-729S keeps blowing fuses.

Hello opey_69a,

Here are the troubleshooting steps for fuses blowing.
1) Remove all wiring except ground, power and remote and see if the amp powers up without blowing the fuses. If it does, the problem is in the input cables or speaker wiring.
2) The use of loudspeaker impedances below the recommended minimums will cause the amp to draw excessive current - check.
3) A shorted or grounded RCA cable may cause the fuses to blow - check.
4) If an amplifier fuse blows continually, with only +12 volt, ground and remote leads connected, the amplifier is probably defective, most likely shorted output MOSFET's. In this case the amp needs professional repair or replacement.

Hope this helps.

Anonymous

  • 676 Answers
  • Posted on Nov 17, 2009

SOURCE: i have a kenwood 600 watt kac-7285 hooked up 2 my highs

use bass blockers or use a crossover.

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Related Questions:

1helpful
1answer

I have 2 mtx 12"woofers (8ohms each wired parallel to get to 4ohms) which Kenwood amp would be best to use: kac-7252 or kac-9104d?

The Kenwood KAC-7252 and KAC-9104D are both great amps, but they have different strengths and weaknesses. The KAC-7252 is a 5-channel amp that can output 75 watts per channel at 4 ohms. It also has a built-in crossover and time alignment, which can be helpful for getting the most out of your woofers. The KAC-9104D is a 4-channel amp that can output 100 watts per channel at 4 ohms. It also has a built-in subwoofer output, which can be used to power a separate subwoofer.
If you are looking for an amp that can power all of your speakers, the KAC-7252 is a great option. It is also a good choice if you want an amp with built-in crossover and time alignment. However, if you are looking for an amp that can power a subwoofer, the KAC-9104D is a better choice. It is also a good choice if you want an amp with more power output.
Ultimately, the best amp for you will depend on your specific needs and budget. If you are not sure which amp is right for you, it is always a good idea to consult with a professional car audio installer.
Here is a more detailed comparison of the two amps:
Kenwood KAC-7252
  • 5-channel amp
  • 75 watts per channel at 4 ohms
  • Built-in crossover and time alignment
  • MSRP: $399
Kenwood KAC-9104D
  • 4-channel amp
  • 100 watts per channel at 4 ohms
  • Built-in subwoofer output
  • MSRP: $499
I hope this helps!
0helpful
1answer

I have a KAC-729S KEnwood 600 watt amp. that wont power up.

You most likely have a shorted or grounded wire. First remove all the speaker wires with the power off then power it on to see what happens. If it powers on just fine then it's one of the speaker wires that's causing the problem. Power it back off and add one speaker wire then power it back on and repeat the process until you find the culprit. If it doesn't power on initially with the speaker wires disconnected then the problem lies in the main power, the remote power wire or quite possibly a poor ground which is very very common.
0helpful
1answer

How to install kenwood 729s withno rca outlet on radio

You can run the speaker wires to the speaker level input on the amp or i believe you can run another set of speaker wires spliced into the existing wires in parallel to the speaker level input along with the speakers that are already hooked up if you are using the amp for a sub or other speakers that you have added to the existing system.
1helpful
1answer

The subs aren't pushing out bass.

Hello crobins2,

The Kenwood KAC-6202 2-channel is only rated for 60 watts RMS per channel into a 4 ohm load. That just isn't much power for a pair of 12" subs. Even the bridged output is only 200 watts into 4 ohms, still at the low end for a sub, much less to share between a pair of subs.

Assuming that your subs are 4 ohm, you could probably get more sound by driving just one of them on the bridged terminals. But to get the best power with what you have, connect one sub to each channel, set the filter switch to the far right (LPF), set the operation switch to stereo (both channels driven), set the filter frequency (Hz) to 100 or lower, and adjust the input sensitivity as far clockwise as possible without causing distortion.

But, to do the subs justice, you really need at least 300-400 watts to share between them.

Hope this helps.
2helpful
1answer

Kenwood KAC-729S keeps blowing fuses. Checked all cables, re-ran power, remote, and ground. All good, still blows them at power-up.

Hello opey_69a,

Here are the troubleshooting steps for fuses blowing.
1) Remove all wiring except ground, power and remote and see if the amp powers up without blowing the fuses. If it does, the problem is in the input cables or speaker wiring.
2) The use of loudspeaker impedances below the recommended minimums will cause the amp to draw excessive current - check.
3) A shorted or grounded RCA cable may cause the fuses to blow - check.
4) If an amplifier fuse blows continually, with only +12 volt, ground and remote leads connected, the amplifier is probably defective, most likely shorted output MOSFET's. In this case the amp needs professional repair or replacement.

Hope this helps.
0helpful
1answer
1helpful
3answers

Adjusting wattage on kenwood kac 9103 class D mono amp

That amplifier is 900W x 1 @ 2ohms.
If your subs are 4ohm SVC wired Parallel, resulting in a 2 ohm load, each sub will only see 1/2 of the rated power. (450W ea.)
Your gain (sensitivity) setting should be between 75% and 85% to max. You will be fine.
0helpful
2answers

Kenwood kac-9152d

by jump do you mean all it does is thump and no sound besides thumping noise? if so put a better ground on your amp, double grounds work the best. please reply
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