static in speakers

82 GT · 12-26-2003, 11:29 PM

I get static in my speakers only when the engine is running. It's not engine noise but just some crackling static that I can hear slightly in the background. When the engine is off then it plays great with no static. What is causing that static I hear and what do I do to fix it?
This is the system I have:

Alpine CD head unit (35wx4)
Clarion 6.5 door speakers (200w max.)
Jensen 6x9 speakers in rear (150w max.)
passive crossover network
2) 12inch JL audio subs
Alpine V-12 amp(150w)......powers the door speakers & 6x9's
Alpine V-12 amp(300w)......powers the subs

tireburner163 · 12-28-2003, 03:01 AM

Tt's noise from some type of eletronics on the motor. Do you have a ignition box?

Try installing a noise filter, that should solve your problem.

-Josh, aka the tireburner

82 GT · 12-28-2003, 09:33 AM

No ignition box. My system is in my bone stock '88GT.
I'll try the filter like you mentioned.

jinx6570 · 12-29-2003, 12:55 AM

I don't know how much troubleshooting you've done but try unplugging the RCA's on the amp. If you still have noise try regrounding the amp somewhere else. If that doesn't work but a groundloop isolator for the RCA's. It goes inbetween the RCA's from the radio and where they plug into the amp.

82 GT · 12-30-2003, 04:13 PM

If I unplug the RCA's from the amps then I probably won't have any sound out of the speakers then.......or will I?
Why wouldn't it have static with the engine off?
I don't know....I'll give it a shot though.

jinx6570 · 12-30-2003, 07:36 PM

Unplugging the RCA's eliminates a couple of things. There can still be noise coming from the speakers eventhough the RCA's are not plugged. There isn't supposed to be, that's why you disconnected them- to see if there is a problem. If there is still static there's a problem with the amp or amp ground I would suspect. If you still have noise try regrounding the amp. If there is no noise than try a ground loop isolator. You can get them at any stereo shop for $15-20. The RCA can also be bad so try a new one if you can.

82 GT · 12-31-2003, 03:33 PM

thanks

12-26-2003, 11:29 PM	#1
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	static in speakers I get static in my speakers only when the engine is running. It's not engine noise but just some crackling static that I can hear slightly in the background. When the engine is off then it plays great with no static. What is causing that static I hear and what do I do to fix it? This is the system I have: Alpine CD head unit (35wx4) Clarion 6.5 door speakers (200w max.) Jensen 6x9 speakers in rear (150w max.) passive crossover network 2) 12inch JL audio subs Alpine V-12 amp(150w)......powers the door speakers & 6x9's Alpine V-12 amp(300w)......powers the subs __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

12-28-2003, 03:01 AM	#2
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	Tt's noise from some type of eletronics on the motor. Do you have a ignition box? Try installing a noise filter, that should solve your problem. -Josh, aka the tireburner __________________ 1987 Buick T-type 1998 HD Electra Elide

12-28-2003, 09:33 AM	#3
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	No ignition box. My system is in my bone stock '88GT. I'll try the filter like you mentioned. __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

12-30-2003, 04:13 PM	#5
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	If I unplug the RCA's from the amps then I probably won't have any sound out of the speakers then.......or will I? Why wouldn't it have static with the engine off? I don't know....I'll give it a shot though. __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

12-31-2003, 03:33 PM	#7
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	thanks __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

12-29-2003, 12:55 AM	#4
jinx6570 Registered Member Join Date: Dec 2002 Location: Little Rock AFB Posts: 24	I don't know how much troubleshooting you've done but try unplugging the RCA's on the amp. If you still have noise try regrounding the amp somewhere else. If that doesn't work but a groundloop isolator for the RCA's. It goes inbetween the RCA's from the radio and where they plug into the amp.

12-30-2003, 07:36 PM	#6
jinx6570 Registered Member Join Date: Dec 2002 Location: Little Rock AFB Posts: 24	Unplugging the RCA's eliminates a couple of things. There can still be noise coming from the speakers eventhough the RCA's are not plugged. There isn't supposed to be, that's why you disconnected them- to see if there is a problem. If there is still static there's a problem with the amp or amp ground I would suspect. If you still have noise try regrounding the amp. If there is no noise than try a ground loop isolator. You can get them at any stereo shop for $15-20. The RCA can also be bad so try a new one if you can.

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