Author Topic: Lab Series Preamp Compressor  (Read 853 times)

bcalla

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Lab Series Preamp Compressor
« on: September 12, 2016, 06:01:32 PM »
I've got aion's Lab Series Preamp built but I'm having some difficulty with the compressor trim adjustment.

I did a quick sound/sanity check before I made any trim adjustments and the limiter LED seemed to pulse with my picking, but the distortion levels were way off.  I downloaded the signal generator for my phone and followed the instructions for setting the distortion trimmer and the compressor/limiter trimmer and both went perfectly - I was able to adjust to both desired AC voltages.  However, with both trimmers set properly, the limiter LED does not light, nor do I hear any compression.  In fact, with the distortion trimmer set properly, there is no compressor/limiter trimmer setting that gives me any compression.  I've done it several times with the same result.  I know that the build doc says to leave it at the lowest setting, but as I said there is no trim setting that works.

Any ideas as to how to troubleshoot this?

bcalla

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Re: Lab Series Preamp Compressor
« Reply #1 on: September 13, 2016, 03:00:05 PM »
And I should mention that everything else seems to work perfectly (and sounds awesome!!), it's just the compressor/limiter.