Question about Kenwood KAC-8101D Car Audio Amplifier

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Low output from amp

Hello,

I have a Kenwood KDC-MP225 powering a KAC-8101D that waspushing 1 Bazooka EL1200, the last amp blew the other 1... I wasdriving along 1 day and cranked it up before the cdstarted playing, I don't ever do this! Well, the subs died out! Ithought It finally killed the other speaker, hard to tell in thisenclosure... I found out today when I hooked up a much smaller speakerto test the output it was putting out limited watts. It sounded like itwas wired into the head unit. My LED is solid blue, I've tested theoutput transistors in place & all is well there. Anyone haveany ideas? I really want to pull both banks out & test all thetransistors but I assume the problem may lie elsewhere... Maybe thepreamps from the head unit?

Any help would greatly be appreciated!!!
John

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  • YZJTROSS Nov 22, 2008

    Thanks for the help! I'm afraid I'm actually right on in that department as it is... With the 1 speaker it's an exact match... 200 RMS @ 4 ohms. Oh, and the speakers are Bazooka EL-1204's...

    I tested further and found the transistors for the drivers giving unusual readings... The parts seem to be out of stock where I checked so far... I need to pull everything out on the audio output side to be sure, not feeling up to it right now though... With everything increasing in watts and decreasing in ohms I'm finding it hard to properly match a speaker to my box dimensions in a range suitable for this amp. I'm considering pitching everything and going JL...

    Thanks,
    John


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From a former DJ, make sure that the speaker circuit is matching the load that is required by what ever amp that you are using. If the amp is rated at 1000watts/ channel into 8 ohm's then your equivalent speaker circuit has to match. I repeat has to match! If it does not the amp will either short out or be overloaded. If you are using all 8 ohm speakers on a amp that rate its output at 1000 watt/8ohms then you you have to match the watts and the ohms. Depending on how much power your speakers take you may have to use more than one speaker to handle the power. If you have to use more than one speaker you will have to use a series/parallel circuit to keep the ohms at 8ohm. You have to use ohms law for adding resistor in series and paralell. If more is needed please reply.

Posted on Nov 22, 2008

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