When my stereo on my bike is muted I can here a white noise in the speakers almost like a real soft hiss, is this normal? It's also faintly hearable on volume level 1. It doesn't seem to get louder when the volume gets turned up instead it seems as if the music covers up the sound. If the head unit is muted it must be a sound created from the amp? I'm running a ss4.520 and bt speakers.

 

gains are turned up too high

 

Hmmmm...... well that sucks! I have both front and rear gains set right around the 12 o'clock position. From your experience does this seem higher than normal? I had been running them at the 11 o'clock position but since I had it opened back up to install my rear speakers I figured I would run them alittle higher to avoid running the HK head unit at such a high volume. I was hoping this would help me with distortion until I can upgrade the hu

 

if it's the hissing noise, that's called the noise floor and is present in all amps. Some just show it/produce it more than others.

are you using speaker wire inputs to the amp or did you use a converter to adapter speaker wire to RCA and then into the amp?

 

Speaker wire input from the factory HK junk. I lowered the gains and it helped but I would rather have left it where it was.

 

with that 4.520D, you can adapt the speaker outputs to RCA using PAC SNI-15 for each front and rear then go RCA into amp. that should take care of the noise floor

 

Thanks man I will check it out