Question about Kenwood KAC-9104D Car Audio Amplifier

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Every time i turn up my volume the red light on my kenwood kac9104d flashes and it skips beats i am pushing one 12 inch almani dvc 4ohms 500rms anybody know why it is doing this cause i just ordered two mtx tr5512-04 and i dont want to mess them up if my amp is bad

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  • superdave_09 Feb 03, 2010

    i got it figured out had it wired at 2 ohms and was pushing to much power i wired it at 8 and it works fine but anyone know where i could get a new faceplate?cover for it i have seemed to misplaced mine

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  • Master
  • 447 Answers

Sounds like your speakers are "clipping" drawing more power than the head unit or amp can handle. Or the speaker coil is damaged. Turn off amp and slowly raise the volume, and see if it still does the same

Posted on Feb 01, 2010

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1 Answer

My Kenwood KA-128 wad playing One Night and just tienes off. When I turned it back on, the only light that came on was a red doyt on the volume control knob.


Make sure you have +12 volts on both the red and yellow wires as well as a solid ground. If that is the case then disconnect power and wait about 5 ninutes...this will cause a hard reset. If it still doesn't turn on try disconnecting all speakers...if it still won't turn on the unit is defective...if it does then reconnect each speaker one at a time ubtil it shuts off...then you know you have either a bad speaker or a wire issue with that speaker

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I have 2 12 inch kicker rt dual 2 ohm subs. On a kicker cx1200.1 i want to kno how to hook it up to 2ohm to the amp. And if i can add another 10 inch kicker rt 2ohm sub in the future.


Do to the impedance Of your sub u can't run it @2ohms its going to either be @1ohm or 4ohms and your amp isn't 1ohm stable and u will risk damaging your amp. So your only option is to run it @4ohms and on a good note your sub is 100-600 watts RMS and your amp will push 400-500 watts RMS @4ohms. Now if you want to run 2 sub's in the future That amp will work perfect because it pushes 1,200watts RMS @2ohms and to wire your 2 sub's @1ohm just follow the steps in the image below. Hope this helped.25345194-v0hbouy2nvquqteoroa5j5rq-3-0.png

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What amp would be better to use with what speakers/sub? I have a KAC-7202 kenwood 920W maximum power (150wX2 RMS, 4ohms) (230wX2 RMS 2ohms) and then the other amp I have is a Alpine MRP-M500 mono power...


I'm using that Alpine right now for 2-12" subs and I have compared it to 6 or 7 other amps this month and most were 4 channel 150Watt/Channel Bridged to 300Watts x 2 and found the Alpine to be superior in both sound quality and loudness. The Alpine has also not turned off even with full volume for hours at a time, Very solid amp I was very surprised due to it's size!

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Your giving a wrong load / Ohms impediance to your amplifier.
What are the specifications of your subwoofer? Is it SVC 4ohms or DVC 4ohms or DVC 2ohms? Whats the specs of your amplifier?

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I want to know the best subwoofer wiring diagram for three kicker cvr 10 inch subs, 2 of them are dvc 4 ohm and 1 is dvc 2 ohm, the amp that i am using is jl audio 500.1 1.5-4ohms stable. can anyone help...


if the amp has a 2 outputs then i would wire the two 4ohms together, and the 2ohm by itself. and if its a 4 channel output then wire them all sepretly, if its a 1 channel output then wire the two 4ohms together and leave the 2ohm sub out

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NOT SURE WHAT OHMS SUB I NEED!


if you get the 4ohm you can wire it to run a 2ohm an the kenwood amp will push 900 watts at 2ohms.they say it can push up to 1800 watts,that would be at 1ohm.that kenwood runs 500 at 4ohms an 900 at 2ohm.if you need help wiring the sub or anything else let me know bertman285@hotmail,com Max Power Output 1800W Power Output 4 Ohm [14.4V] 500W x 1 [20-200Hz, 0.5%THD] 2 Ohm [14.4V] 900W x 1 [100Hz, 1.1%THD] Bridged[4 Ohm] -

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How do you wire four 12 inch kicker cvr dual voice coil, to a 2400 watt 1 channel class d amp


Hello brysonford00,

The wiring configuration depends on what final impedance you want the amp to see. If the subs are 4ohm DVC's, you can wire them to present a 2ohm impedance or an 8ohm impedance. The diagrams are here. If your subs are 2ohm DVC's, the wiring is the same. The impedances will be 1ohm and 4ohms.

Hope this helps.

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The amp says it's 1 ohm stable, so assuming the DVCs are dual 4 ohm, you should be able to connect all "+"'s together and all "-"s together, like the picture below:
0f1cebe.jpg

As for the amp shutting off for a few seconds, it sounds like it's either:
A) Not getting enough power at high volume.
OR
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The cap on the +12V to the amp should help, but putting a meter on the +12V might tell you whether it's dropping too low (<11V).

When you first turn the volume up, how long does it work fine before shutting off? Is it with the vehicle running or not?

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Pioneer prs-d5000spl


This sounds like an amplifier that trying to push a lower impedance load than its supposed to. Typical aftermarket car speakers have a 4ohm reading per voicecoil. By running more than one speaker per channel you can get more power(sometimes alot more) from the amp by feeding it a 2ohm load or more. If the amp isn't designed to handle ratings less than 4ohms a channel it will overheat and shutdown.

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