So I'm a new to this stuff and previously build and Amp Camp Amp(ACA) and it is working fine.
So now I've built a second one with the hope to connect both via XLR to a pre amp that has balanced output.
I connected the new amp(ie. the one I just ordered and built). When I power on the amp the sound comes on and lasts for 3-5 seconds and then fades to nothing? Looking for idea's my brother the double E suggests it could be a capacitor and if others believe his I'll sure try to track it down. I have very limited tools. A soldier iron, and a digital multimeter.
What do I need to try where do I begin the hunt.
I have the XLR connected and the speaker is plugged into the outer most output posts. the switch is in the center position and as near as I can tell there are no shorts and the wiring is "correct". That means I get the same reading compared to the one that is working.
james
So now I've built a second one with the hope to connect both via XLR to a pre amp that has balanced output.
I connected the new amp(ie. the one I just ordered and built). When I power on the amp the sound comes on and lasts for 3-5 seconds and then fades to nothing? Looking for idea's my brother the double E suggests it could be a capacitor and if others believe his I'll sure try to track it down. I have very limited tools. A soldier iron, and a digital multimeter.
What do I need to try where do I begin the hunt.
I have the XLR connected and the speaker is plugged into the outer most output posts. the switch is in the center position and as near as I can tell there are no shorts and the wiring is "correct". That means I get the same reading compared to the one that is working.
james
OK, then some DC voltage in the audio circuit is wrong, preventing amplification.
Probably not a capacitor, but it could be bad connection, wrong part, reversed part, etc.
Do you have a diagram of the DC voltages in the circuit? If so, compare them
to the good amplifier. Is the DC balance pot adjusted correctly?
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