when I first turn my SE-R on, the speakers make a "thunk" sound before the music plays.

is it the old Pioneer DEH-M990DSP cd player

the old Alpine 3527S amplifier

or a bad ground (install)

thanks for your input.

-vq

 

thats more than likely your head unit, leaking power.

 

does it make that sound when you turn off the car also?

 

I'll have to check next time I drive it..

I've got the Maxima this week...

-vq

 

Sounds like amp turn on/off "thump". Could be built into the amp's circuitry. Most amps have a "quiet" turn on, but sometimes you may get a "thumping" sound if not properly grounded.

 

yeah, amp says me

 

Like Wise on the amp

 

Agreed on the amp, do you have a spare one to use for testing?

--Don