help!!!

[shawnberry45]

guys i really need your help


i have the following:

sr6500 up front
pdx-4 100 amp
pdx-1 600 amp
sr124 sub
Alpine 7887 radio

when i first start the car, i get a discharge noise from the front driver speaker, sounds like power discharging, last about 2 mins then goes away, some times when i put the music up then turn it down the noise comes on then goes away after 2 seconds

i have my amps grounded to my cap, is it possible its that? i returned the pdx 4-100 three times, all three amps made this noise, what the heck could it be?

[MacLeod]

Yup, there is a good chance its your ground. Ground your amps to the chassis.

[shawnberry45]

everything is grounded to the chassis...still have the same exact noise

anyone?

[exalted512]

you need to check and make sure none of your RCAs and speakers wires are pinched/cut.
-Cody

[shawnberry45]

yea i thought of that..but wouldnt it make the noise all the time if it were that? not jsut the first 1-3 mins the car starts up?

[exalted512]

Didnt catch that. Sounds like a faulty radio/amp.
-Cody

[shawnberry45]

well i replaced the speaker wire, and changed the rcas, and replaced the headunit...same noise....the amps been changed 4 times...should i try a different amp? all ive done is change from pdx to pdx...

maybe i have bad polks up front? any one have issues with the sr6500?

[exalted512]

Man, stuff like that is near impossible to diagnose over the internet. Even though its grounded to the chassis, you might want to move it somewhere else.
-Cody

[Kinetic]

guys i really need your help


i have the following:

sr6500 up front
pdx-4 100 amp
pdx-1 600 amp
sr124 sub
Alpine 7887 radio

when i first start the car, i get a discharge noise from the front driver speaker, sounds like power discharging, last about 2 mins then goes away, some times when i put the music up then turn it down the noise comes on then goes away after 2 seconds

i have my amps grounded to my cap, is it possible its that? i returned the pdx 4-100 three times, all three amps made this noise, what the heck could it be?

same amp same problem

i already buy a PDX 150, its suppossed to be here next week.
the PDX 100 is going back to Alpine for a change

[Kinetic]

the problem its suppossed to be on the grounds of the pre amp

[shawnberry45]

damn i knew it was the amp!!! I just bought the JL slash 300/4 4 channel ..its comin on Monday. The hell with PDX! ill post my findings once the new amp is in. thank you so much for your post!

[shawnberry45]

well after 3 alpine amps, tons of checking speakers, wire, changin headunits...i installed another brand amp....the JL Slash 300/4

no issues at all!!! Screw Alpine amps and the PDX! Never again!

Finally I have peace. Thank you everyone for your help!