Question about Kenwood KAC-9152D Car Audio Amplifier

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How much volts or ohms should be coming out of rca cables to my amp?

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Ohms does not make a difference for the rca cables, and the volts at the stereos max power will be whatever that brand and model is rated for the output cables, usually 2.5, 5, 7.5, or 9. your average output is for 2.5 volts on an affordable aftermarket radio

Posted on Jan 08, 2009


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I have an kenwood 600watt amp and then amp keeps turning off and on when i turn the gain up

1) Pull your speaker wires, grab an ohm meter and confirm that each speaker reads 4-8 ohms nominal impedence.
2) Ohm out your speaker wires to chassis ground & confirm no 0 ohm (short)
3) Confirm 12 volts plus at amp power wire. Low voltage will send amp into protect mode.

If speakers are disconnected and amp turns on, look for a red led. If red then you have an internal problem that is protecting the amp.
If going into protect mode due to internal issue, then it's time for a new amp.
Also, you will need to use a "line out adaptor" in order to covert from speaker out to low level (RCA) input to amp. Too much voltage from head unit can fry the pre-amps in the amp.

And yes, I'm an electronics tech and yes, I know my stuff on car audio:)

Just a side note, never confirm a fuse as good by sight:)

Nov 15, 2013 | Kenwood Car Audio & Video

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THE AMP TURNS ON BUT THE FUSE UNDER THE HOOD KEEPS BLOWING and the sub wont turn on but the amp turns on

Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty . Please use volt meter to test correct voltage and ohm feas ng on speakers. .A thumbs up would be greatly appreciated if this answer is helpful to you. amp-turns-but-zb4bomd1rt4qms0dqd12kkt2-3-0.jpg

Jan 16, 2011 | MTX X Thunder 1000XD Car Amp

1 Answer

Cannot get pyle driver 413 bridgable mosfet1000 watt amp to work with 800 watt subwoofer . followed instructions all the lights are lit but no sound need help

just wondering how you connected the amp . you should do the following steps
1 battery cable with right size fuse at battery
2 remote wire from radio
3 rca cable from audio out from radio
4 ground the amp to a good clean piece of metal

then make connection on the amp
1 battery or power cable to the 12volt connector on the amp
2 remote wire to b+ or rem on the amp
3 rca cabel should be pluged in the channels are using cause you tell me that the amp is 4 channel
from the model numbers
4 clean and scrape off paint on the metal surface you are going to install the ground cable from the amp . make sure your ground is no more than 12 inch max. and is the same gauge as the power cable
5 . run your speaker wires to the amp and make sure your ohm load for the subwoofer is 2 ohms or 4 ohms to make the amp work proper .

if need help on anything email me @

Oct 29, 2010 | Pyle Car Audio & Video

1 Answer

The amp turns on and the lights come on and all my wires are hooked up correctly but i still have no sound?

Make sure your RCA's are hooked up, the take a DMM set it to AC volts, turn the deck up about 75% and see if your getting readings where you plug your speakers into the amp. If your not then its the amp, if you are then check your speaker connections again. If the connections are good, set the DMM to ohms and check your speakers. Set the meter to the lowest ohm setting and put + to + & - to - on the speaker terminals. For example if its a 4 ohm speaker the meter should read around 4 ohms it can move alittle like 3.5-4.2 or so, but if the #'s jump around like 55.6-1.2 then more than likely the speaker is fried...Hope this helps

Apr 02, 2010 | MTX Thunder5601 300W x 1 Car Amp Mono...

1 Answer

No signal coming from rca output on numark pro tt-1 turntable.

Please recheck all connections from the 'needle' to the end of your hook-up cable. Check with a continuity checker if you have one (volt/ohm meter will do nicely)

Mar 11, 2010 | Numark Pro TT-2 Turntable

1 Answer

The comes on but not putting sound

depending on the radio's output (sometimes found on the front of the radio) you can use a volt meter on the ac scale of volts and put the red probe in or on the center leg of one of the rca's coming out of the radio and the black one on the metal round outside portion of the rca and turn the radio up should be in the range of 2 to 4 volts ac if not you have no signal and depending where you take the test it could be the rca's or the radio. first start at the amp end of the rca's and take test there on all rca's jack's if nothing remove the radio and take the test at the rca's coming out the back and if no voltage there then the issue is with the radio if there is then tthe issue is the rca cable and if you have voltage theough out then your issue is with the amp. if you have any more question please ask. good luck

Aug 31, 2009 | Car Audio & Video

1 Answer

Protection light turn on with sound

It's likely that the amp is defective but you should check the shield ground of the RCA signal cables before sending the amp off for repair.


Disconnect the RCA cables from the amp.


With your multimeter set to ohms, measure the resistance from the outer shield of the RCA cable to chassis ground. If it's more than a few ohms, that could be causing your problem.


If this is higher than a few ohms, short the meter's leads together to make sure the meter will go down to 0 ohms.


To check the shield ground of the head unit (assuming that the head unit is driving the amp directly), disconnect the RCA cables from the head unit and measure the resistance from the RCA output shield to the case of the head unit. It should essentially read 0 ohms.



Oct 21, 2007 | Cerwin Vega XL 600.1 Car Audio Amplifier

1 Answer

No power output

Set the meter to AC volts and measure the AC voltage on the RCA cables where they plug into the amplifier. The black meter leat will go on the shield ground of the RCA cable. The red lead on the center conductor. You may have to turn the volume up to get a reading on the meter. At high volume, you should read at least one volt but the actual voltage will vary due to the audio signal. If you get no voltage on the RCAs, measure the AC voltage on the input to the LOC. Let me know what you find.

Aug 24, 2007 | Kicker ZX10001 Car Audio Amplifier

2 Answers

My amp wont put out sound

it's blown....probably, check your connections and make sure your presenting it an ohm load it can check the sub with a dmm.

Feb 28, 2006 | Jensen A600HLX Car Audio Amplifier

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