Generic Car Amp. schematic


Hello,
I would like to begin to repair a few car amps. I have around the place
at mine ....
They all seem to have massive power filters and two major types of
active components ...
Can anyone point to a good place to see a generic car audio schematic ?
I have tried to find the schematics for these particular amplifiers, but
alas no luck so far ...
thanks
Matt
Reply to
Matt Flax
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There's been several construction projects in various magazines. Essentially they're very similar to a household amplifier, except rather than a 60 (or 50) Hz transformer stepping down the line voltage, car amps use a high frequency switchmode power supply to step up the 12V to the + and - voltages required by the amplifier. First determine whether the problem is in the power supply or the amplifier section, then Standard diagnostic procedures apply to either portion. Usually the problem is not too hard to track down, most all these amps are very similar at a basic level.
Reply to
James Sweet
Many (most?) have a single brick PA module per channel, which in my no-longer-recent experience has been source of the problem much of the time. A quick check of the web for data on the brick concerned will reveal a recommended/sample circuit, which often as not is followed close enough to make fault finding easier.
Cheers.
Ken
Reply to
Ken Taylor

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