Need help with ICE

[earlgrey]

I have install aftermarket audio setup but using the stock Head-unit on my R56. Problem is sometimes when I start my car, the audio became mute, I can see the spectrum on my Alpine 701 running but just no sound come out. Happen on and off whenever I start my engine.

Secondly, after I shut down the engine, I found that the processor and amps are still on power until sometime after I lock my door, all the system will shut down. Is this a common behavior for the R56?

My set up is,
Stock Head-Unit
LC6 Controller
Alpine H701 Processor
Steg k2/01 x 2
Steg k4/01
Helix 3-Way component
Scanspeaks 9" SW
Van Den Hul Speaker Cable
Monster Interconnect