1

EQ573 Equaliser / Hi Frequiency "Hiss" when it is at pre mode

« on: October 08, 2025, 09:08:02 PM »

Hello there! Perfect sounding Eq! Have a small problem with the eq that i want to solve cause i want to use the pre mode. Yen i am in xlr mode everything sounds good. When i turn it to the Pre mode, sound is the same like in xlr but it adds a hisss (hi frequency noise) and it is unusable. Any idea?

2

CP554 Diode bridge compressor / Suddenly no output! Help please

« on: October 17, 2023, 12:49:55 AM »

Hello to all! 
I recently built the cp554 compressor. Everything working perfectly until yesterday!  suddenly no sound when it is on. The light is ok. The measurements from the V+- and the the bias are ok. Please where to start searching?? Any thoughts?