Hi

I`ve got a problem with Pioneer DEH-P3630MP tuner. When I`m taking the
music with deep bass louder, the sound starts to be distorted (crackles)
and the  display   blows out. I`ve changed power supply cable to 8 mm2
straight from accu /baterry/ but it doesn`t sound better with higher
volume. I`m thinking about to change the ground cable with 8mm2. Do you
have to any ideas what may I try to do things get better with this
equipment ? I have a rather good Hertz two way speakers.

Please tell me, what is the sheme of DEH 3600 connector output ? What
colour is ground signified? I`ve thought that BLACK, but tuner works
without black cable connected, so there should be other ground cable in
the connector...