Hi everyone,
I have a delco am fm radio that has a low volume and it wont go up. I ground out the other side of the speaker, not using the negative speaker wire, it works. I know that I am hooking it up right. Can anyone guess what the problem would be internally? Something simple like maybe a resistor bad so the amp transistors not getting biased correctly or something?
TIA,
Tim
my GUESS would be that the radio has a bridging type of amplifiers that drives both speaker leads so as to get more power, and one side of the amp is defective.
I assume this is a stereo radio with a left and right speaker.
How does the other side work?
Mark
BUt if that's the case, then putting the speaker from one output line to ground will put a low value resistor across a DC voltage. Not so good for the speaker, and not so good for the amplifier.
Put a capacitor between the amp and the speaker, and of course it will be like any single-ended amplifier.
Micahel
Thanks everyone for your help!! I know have a place to look.
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