Question about Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Subwoofers not getting music

My amp is on, not in protect mode and no sound is coming out of my subs. I already hooked up another amp, another sub, and new speaker wire...and it does the same thing, green light but no sound...no fuses are blown this all happened right after i upgraded to more powerful subs with no capacitor, but it wont come back on now???????????

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  • howdoiuhhhh Apr 28, 2008

    it went out during music play, i dont kno what it could be... this sucks

  • Lashbrook69 Feb 23, 2009

    i have 2 new mtx subs wired to my amp with power and eveything it has power for sure but the subs dont work could the power be being used from somewere eles or is there a input problem.....

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  • Master
  • 975 Answers

Looks like you need to check the SOURCE of where the signal is coming it could be that your CD car stereo SUB opt. is turn off , check the menu of SOURCE and switch to SUB on , hope this helpful

Posted on Apr 28, 2008

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1 Answer

Hooking sub up


Hello missywarden,

According to the specifications, the amp is capable of "tri-mode" operation, that is, running normal speakers on the individual channels while also powering a subwoofer in bridged mode.

Your sub needs to be a minimum of 4ohms and should be relatively efficient. I'd look for a sub that has an RMS power range of from about 75 watts up to a maximum of 250 watts.

The sub connects to the leftmost speaker terminal (positive - right channel) and the rightmost speaker terminal (negative - left channel).

It's not going to be a really loud subwoofer. The power is 360 watts RMS which will be shared by the normal speakers and subwoofer.

Hope this helps.

Aug 05, 2009 | Power Acoustik TS620-2 Car Audio Amplifier

1 Answer

My amp is protecting unessacarily when ran at 2 ohms


are you factoring the ohm rating from running them parallel?

2 x 2o subs parallel = 0.5 ohm (lowers ohm's)

2x 2oh subs series = 4 ohm

IT is posable that you are calculating the ohm rating fine, BUT some SUBS can reach lower ohm rating while hitting bass- i didnt know this till i had a rather insane sub that would dip to 1ohm while hitting hard bass causing my amp to go into protect mode.


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Audiobahn 1800 watt amp has an error of LO and isn't working righ


you are not getting your amp enough volts try checking your ground or power cable

May 19, 2009 | AudioBahn A18001DQ Car Audio Amplifier

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My amplifier is not in protection mode everything works fine but my subwoofers play a very small sound . and it is not my subs at fault i already tested my subs and they work fine. i know theres a problem...


THERES A PROBLEM WITH YOUR RCA'S,IF YOU JIGGLE THEM WHILE THERE HOOKED UP TO THE AMP AND THEY MAKE THINGS LOUDER OR POP THAN YOU NEED TO GET THE RCA TERMINALS FIXED.

May 07, 2009 | Crunch Maxxsonics PZi 3000.1D Car Amp

1 Answer

Kole amp in protect mode?


Are you setting the bridge switch for both left and right or are you trying to run both subs off of one set of terminals? If you running the subs off one set of terminals you are effectively running the amp below 2ohms and thus the amp is not 2ohm stable and you will destroy it.

Some amps actually all ready run a bridged output for left/right operation, this could also be the reason why the protection circuit is kicking on.

Either way it's a component mismatch and you either need a stronger amp or different subwoofer setup.

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3 Answers

KAC-9102d no sound, Amp powers on but no sound to the subs.


If the sub isn't working, you won't get a pop. All you need is a small speaker. Don't need a sub, you just want to test the sound. I recently blew 2 subs, no smoke, no smell, no sign of being blown. Absolutely nothing from the subs.... In the past my sub locked up. You can take your sub out of the box and hook the + and - to the battery to see if you can get the sub to pop there. I believe a small box will push a sub into a deep excursion to the center of the cone. I have 2 lanzar VW12D's that just quit. I hooked a 6 x 9 up to my amp and low and behold I had sound! Try that and see what you get...

Feb 07, 2009 | Kenwood KAC-9102D Car Audio Amplifier

1 Answer

My Amp


sounds like the sub that throws it into protect mode is cross wired pull sub out and make sure they are wired right make sure ground from sub goes to ground on box and do same for power wire

Jun 11, 2008 | Sony Xplod Car Audio Amplifier XM-DS1300P5...

1 Answer

What could be wrong???????


The only thing left is the wiring, and or connectors from what you are describing.

You can try another amp and another set of speakers on the same wiring to see if they work. If not, the only thing you have left is the wiring and connectors (if connectors are used).

This suggestion is valid providing that substitution equipment is not defective.

Jerry G.

May 01, 2008 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Stuck in protection mode


First disconnect the subwoofer wires from the amp, turn the car off and back on...is the amp on? If so your subs are shorting it out, either from a frayed wire, or blown subs.
If it is still in protection mode, check the fuses in the side of the amp.

Mar 21, 2008 | Kenwood KAC-7251 Car Audio Amplifier

2 Answers

Protection light


You cannot parallel two subs AND run them on the Bridge. You must have at LEAST a 4 ohm load on the bridge, and 2 4 ohm subs in parallel equals TWO OHMS. BAD!!! Move each sub to it's own channel or your amp will soon fry.

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