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02-18-2013, 10:52 AM | #1 |
Scooby Newbie
Member#: 271364
Join Date: Jan 2011
Chapter/Region:
SWIC
Location: Tucson
Vehicle:2002 and 2006 WRX AW - OPB |
High pitch sound from speakers as I accelerate?
So I just hooked up my pioneer deck, hifonics amp, and kenwood 12" sub. My friend did the wiring harness on the deck as I wired everything to the back of the car and battery.
Everything sounds good when the engine isn't on but as soon as you turn the car on a high pitch whining sound comes from the speakers and as the rpms go up, so does the sound I can pretty much tell people i have a kenny bell. My friend said it was caused by the remote/power wire being with the speaker wires but I rewired so everything was separate and nothing. What could be causing this? Is it alternator whine? Thank u
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02-18-2013, 10:52 AM | #2 |
Scooby Specialist
Member#: 239469
Join Date: Feb 2010
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:2004 WRX ??? |
Alternator whine?
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02-18-2013, 11:14 AM | #3 |
Scooby Newbie
Member#: 271364
Join Date: Jan 2011
Chapter/Region:
SWIC
Location: Tucson
Vehicle:2002 and 2006 WRX AW - OPB |
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02-18-2013, 05:18 PM | #4 |
Scooby Newbie
Member#: 283194
Join Date: May 2011
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2017 STi and '05 WRX WRB and PSM |
Pioneer's normally show ground loop issues more than any other h/u's. A few things you can try are.
1) Better grounds. Amp, h/u, and factory subaru grounds. 2) Make sure rca's and speaker wire are complete opposite side as power. 3) ground your rca's to radio ground/ amp ground. (rap copper wire around all 4 rca's, then ground to amp on one end, h/u on other end.) You are getting a "ground loop" because your dealing with different ground paths between a common system.. |
02-18-2013, 05:45 PM | #5 |
Scooby Specialist
Member#: 239469
Join Date: Feb 2010
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:2004 WRX ??? |
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02-18-2013, 06:25 PM | #6 |
Scooby Specialist
Member#: 211974
Join Date: May 2009
Chapter/Region:
SWIC
Location: Scottsdale, AZ
Vehicle:2004 WRX STi PTE6466 2002 Sentra SE-R Spec V |
I had this same problem on my Sentra. Ended up using one of the bolts that holds the seat bracket down as a ground and now it is fine. Originally I had it ground out to the handbrake bracket, but I think that had the grounding issue because of the handbrake sensor circuit.
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02-18-2013, 10:28 PM | #7 | |
Scooby Newbie
Member#: 271364
Join Date: Jan 2011
Chapter/Region:
SWIC
Location: Tucson
Vehicle:2002 and 2006 WRX AW - OPB |
Quote:
Thank you though and everyone else, lemme try everything and ill let you guys know what does the trick |
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02-18-2013, 11:05 PM | #8 |
Scooby Newbie
Member#: 346968
Join Date: Feb 2013
Chapter/Region:
NESIC
Location: CT
Vehicle:2004 WRX wagon 48W Crystal Gray |
The remote wire is a positive signal so your fine running that with your power. But definitely check your amp ground connection. Make sure its tight and on clean bare metal.
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02-18-2013, 11:06 PM | #9 |
Scooby Newbie
Member#: 283194
Join Date: May 2011
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2017 STi and '05 WRX WRB and PSM |
Your remote turn on, and power can run down the same side. Rca's and speaker wire down the other. You never want your signal to run with power. If you need to cross the two make sure it's at a 90 degree intersection.
Quality of install is number one, keep it clean. Rca's will benifit when it comes to quality and blocking external interferance. Cheaper rca's work well for subs. But spend some money on jacketed, insulated rca's for your 4ch. Work on my first post, keep us updated. "The easiest thing you can do is install a system with noise interferance. The hardest lesson you'll learn is how to prevent it to began with." -D.E.I instructor I met in my install youth. |
02-19-2013, 05:03 PM | #10 |
Scooby Newbie
Member#: 336644
Join Date: Oct 2012
Chapter/Region:
NWIC
Location: Seattle area
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Exactly what Johnson said. And when he says bare that really means bare as in scrape off any paint. If that doesn't work try other grounding points, grounding everything at the same point, check your battery and make sure its all and well, if you have a signal processor lift the ground.
Do you have twisted pair RCA's? "Shielded" RCA's really don't do much. When the signal cable (or speaker crossover) is next to the power you are getting "inducted noise" |
02-19-2013, 06:13 PM | #11 |
Scooby Newbie
Member#: 347603
Join Date: Feb 2013
Vehicle:2005 impreza champagne |
You are getting ground noise as stated. I installed an earth ground and all of my static noise was fixed.
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02-19-2013, 07:44 PM | #12 | |
Scooby Newbie
Member#: 335675
Join Date: Oct 2012
Chapter/Region:
TXIC
Vehicle:2013 WRX hatch Obsidian Black Pearl |
Quote:
Great suggestions^ Where do you have your amp grounded? |
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02-20-2013, 10:50 AM | #13 |
Scooby Newbie
Member#: 271364
Join Date: Jan 2011
Chapter/Region:
SWIC
Location: Tucson
Vehicle:2002 and 2006 WRX AW - OPB |
I have shielded RCA's
And my amp is grounded in the trunk on one of the studs for the trunk latch. Its weird because at first it was grounded with something else (I think the tail light ground) so i moved it to a stud with nothing. This FIXED the interference and everything was sounding perfect for about 30 minutes till it slowly came back. There is some white paint back there so I definitely will sand that down tonight and see what that does. And what do you mean by earth ground? Thank you for all of the help everyone. |
02-20-2013, 11:10 AM | #14 |
Scooby Newbie
Member#: 283194
Join Date: May 2011
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2017 STi and '05 WRX WRB and PSM |
A trunk lid on a uni-body car is not a ground... (think of how many pieces of metal and bolts that ground path as to travel to get back to ground..) Pull up your rear seat bottom, and sand down the paint by a seat belt bolt. drill, then tap a ground. (look twice, drill once. You have a lot of important things under there.)
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02-20-2013, 08:32 PM | #15 | |
Scooby Newbie
Member#: 335675
Join Date: Oct 2012
Chapter/Region:
TXIC
Vehicle:2013 WRX hatch Obsidian Black Pearl |
Quote:
That's where I would suggest grounding as well, under the seat bottom right by one of the seat belt bolts. you want you ground point to be on the main uni-body structure of the car. Pick a spot right next to one of the seat belt bolts, get a wire brush wheel that you can attach to a drill and go to town on the paint, you want to have a 1"x 1" square of completely bare metal where you are going to screw your ring terminal down. Watch this for more advise. |
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02-20-2013, 09:36 PM | #16 |
Scooby Newbie
Member#: 283194
Join Date: May 2011
Chapter/Region:
RMIC
Location: Colorado
Vehicle:2017 STi and '05 WRX WRB and PSM |
(I'm serious)
dbmonster, I enjoy your back up. I half-ass a reply, and you fill in the details and add sources.. Plus, it's good to see another person adding quality information in this "beat myself in the head" audio thread. (-End bro-out) animalcrackers- How's the build? If we don't hear what the solution was, I'm retiring. |
02-20-2013, 09:46 PM | #17 |
Scooby Newbie
Member#: 335675
Join Date: Oct 2012
Chapter/Region:
TXIC
Vehicle:2013 WRX hatch Obsidian Black Pearl |
Thanks man!
I'm pretty new to this forum, and just trying to help where I can. I'm a noob to the subie world, but I'm a veteran when it comes to car audio, been doing it professionally for 10+ years. |
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