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Author Topic: Power Amp Losing volume?  (Read 1500 times)

Thomas Le

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Re: Power Amp Losing volume?
« Reply #10 on: September 19, 2022, 04:17:11 PM »

Simply disconnecting and reconnecting the wire may have "fixed" the problem (if it is corrosion), a test for this would be to now reconnect the wire to the original channel.. if the signal level is back to where it should be then you have confirmation.

I'll see if I can check sometime this saturday.

If the upper rail of class g/h amp is not working the gain will be the same, but it will clip sooner. This may be audible in full tilt use, but not obvious for normal listening levels.  +1 missing one leg of differential source could look like -6dB loss.

JR

I did check for any loose wiring, they were tightly screwed in.
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Craig Hauber

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Re: Power Amp Losing volume?
« Reply #11 on: October 28, 2022, 01:16:42 PM »

I'll see if I can check sometime this saturday.

I did check for any loose wiring, they were tightly screwed in.
I use a lot of CX series in my portable rigs and the attenuator pots get dirty (or something)  When I now experience an imbalance the first thing I do is to exercise the pot a bit and it usually clears up the problem.
It will pass signal but at a significantly reduced level.

Just my personal experience with repurposed CX series amps that lived their previous lives in 24-7-365 always-on installs
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Craig Hauber
Mondak Sound Design
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Re: Power Amp Losing volume?
« Reply #11 on: October 28, 2022, 01:16:42 PM »


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