Sound Issue with my new system

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Sound Issue with my new system

Hey guys,
installed a new sound system in my car including woofer, amp, 2 front components and 6.5 rear door in my city 2009. I am having this hissing sound coming from my speakers. its not loud but can be heard like from a radio. also if i press the throttle it increases the pitch of the sound as well. i thought it is a amplifier issue. But the shop guy says its some grouding issue to do with my HU which my a Alpine CDE-9872E. Also even if i have my HU turned off, when i start my car there is a light bang on the speakers. The guy says changfe your HU and all these issues will go away.

Any thoughts

Gari.pk User 12677 asked on 06 Jan 2011 09:34:20 am

1 Answer

356 views |

Rayan - on 06 Jan 2011 09:34:37 am

Sir

This can be a ground issue, or the Amplifier gain is too high.

Set the gain to 2 volts.

Check your car ground wires and AMP ground wires.

Do not change your Head Unit.