1

CP4500 Stereo Bus Compressor / CP45000 Bypass issue

« on: February 15, 2025, 11:48:23 PM »

Hey there, I posted about this a while ago but it fell off my plate!

Loving the unit. But I'm having an issue where intermittently the unit seems to fall into bypass even though it looks like it's all still working properly.

Lights still on and meter working etc, but signal unaffected. 

Drastically adjusting the gan pot or the threshold (particularly the gain pot) does seem to sometimes shock it into working again. But not consistently.

Any thoughts?

Thanks heaps for you help. Love to get it working as I'm loving it.

Cheers

2

CP4500 Stereo Bus Compressor / Comp not engaging when ‘in’

« on: August 08, 2023, 12:20:25 AM »

Hi!

My compressor after working fine for a year + started behaving strangely. 

Now when the compressor is ‘in’ it passes signal and meters fine but the comp seems bypassed. 

When I first noticed this it was intermittent and I had some strange behaviour with the gain pot. But now it just seems dead.

The unit looks like it’s working and I hear the click when I hit the in button. But signal remains unaffected.

You actually helped set this unit up and did a basic repair when I first built it as I had the meter spade connectors attached the wrong way.

Thanks in advice for your help!

3

CP4500 Stereo Bus Compressor / Comp not passing audio

« on: September 08, 2021, 07:49:44 AM »

Hi there,


I've just gotten up to the testing of channel 1 phase and have hit a big hurdle.

The voltages when testing power voltages seem ever so slightly of +16.3 and -16.3 approx on the V+ and V- pins. Other than that the readings were as expected.

the next step, running 1k sine wave into the comp i don't seem to be passing any audio at all.

I checked the pinned post above n case your CP4500 doesn't work as expected and the only abnormality I could find in the voltage testing was that testing between OV and pin 12 gave me a reading of .0012 as oppsed to .0000. It did behave as expected when turning the pot to +20 however.

Thanks in advance for your help!

Rohan