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#1
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Alternator whine.
Hello everyone,
Alternator whine... enough said! Here is the setup. Panasonic head unit, single rca from HU to a Rockford Fosgate Symmetry EPX2 unit. Signal is split to go to three PPI amps, PCX 440, 280 and Monoblock(1250). I have alternator whine whenever the engine is on. I have tried bypassing everything and going directly from the HU into the PPI driving my front stage. Alternator whine still exists and is variable based on the level set on the amp. If I turn up the level input on the amp, the whine increases and seems to increase more when the Air conditioning is on. If the HU is not connected to the RCA's there is no whine. It's only when there is a signal... Even if I hook up a battery operated CD player to the RCA's there is no whine. Here is what I have done to try to eliminate the whine. 1. Upgraded the Ground on the battery to 4 gauge (The power is 4 gauge as well). 2. I tried upgrading the ground of the HU to both in two different locations including running 4 gauge to the grounding location of the amps. 3. I tested the HU RCA's for impedance problems and they come up clean, had it tested at my local shop and they found it clean too. 4. I have tried taking the HU out of the dash and running RCA's directly to the amp on the outside of the car... 5. Changed the location of the amp ground 6. Have tried different RCA's Please keep in mind that all that I have hooked up now is one amp + speakers and the head unit. Are there any tests that I can do with my multimeter to check the quality of the ground for the amps or the HU or something? If it matters, I have a 2000 Tiburon. Please oh please offer suggestions! - Corby |
#2
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Alternator whine.
Are you using the stock spark plug wires? I had the same problem myself, and the solution lyed simply in changing my spark plug wires to an MSD set. Very resistant... |
#3
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Alternator whine.
FYI Corby I've had the exact same problem. I actually still have it.
I've upgraded the ground to the engine, and now I'm looking to do the same to the AC unit/AC clutch. Also on my list of to-do's is to replace the spark plug wires. I have also grounded my HU, my EQL (under driver's seat), and my two amps (RF 500X and PPI 2160) all to the same spot (at amps) using 10awg wire. No help. I'm at a loss as well... Gordon "Corby" wrote in message ... Hello everyone, Alternator whine... enough said! Here is the setup. Panasonic head unit, single rca from HU to a Rockford Fosgate Symmetry EPX2 unit. Signal is split to go to three PPI amps, PCX 440, 280 and Monoblock(1250). I have alternator whine whenever the engine is on. I have tried bypassing everything and going directly from the HU into the PPI driving my front stage. Alternator whine still exists and is variable based on the level set on the amp. If I turn up the level input on the amp, the whine increases and seems to increase more when the Air conditioning is on. If the HU is not connected to the RCA's there is no whine. It's only when there is a signal... Even if I hook up a battery operated CD player to the RCA's there is no whine. Here is what I have done to try to eliminate the whine. 1. Upgraded the Ground on the battery to 4 gauge (The power is 4 gauge as well). 2. I tried upgrading the ground of the HU to both in two different locations including running 4 gauge to the grounding location of the amps. 3. I tested the HU RCA's for impedance problems and they come up clean, had it tested at my local shop and they found it clean too. 4. I have tried taking the HU out of the dash and running RCA's directly to the amp on the outside of the car... 5. Changed the location of the amp ground 6. Have tried different RCA's Please keep in mind that all that I have hooked up now is one amp + speakers and the head unit. Are there any tests that I can do with my multimeter to check the quality of the ground for the amps or the HU or something? If it matters, I have a 2000 Tiburon. Please oh please offer suggestions! - Corby |
#4
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Alternator whine.
Gordon wrote:
FYI Corby I've had the exact same problem. I actually still have it. I've upgraded the ground to the engine, and now I'm looking to do the same to the AC unit/AC clutch. Also on my list of to-do's is to replace the spark plug wires. I have also grounded my HU, my EQL (under driver's seat), and my two amps (RF 500X and PPI 2160) all to the same spot (at amps) using 10awg wire. No help. I'm at a loss as well... Sorry, I'm jumping in without a history here, but did anyone upgrade the ground wire going to their firewall? Most cars ground to the fender, which is bolted to the firewall. But all of these parts are painted before assembly, so it's a ****-poor electrical connection. -- Lizard teamROCS #007 / Technical Director / Founding Member *res derelicta* http://www.teamrocs.com/ Save Farscape http://www.watchfarscape.com |
#5
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Alternator whine.
Hi Lizard...
Yes I'm working on that as well. You're right, everything is painted -- I'll pull the dremel out this weekend and upgrade all the grounds and see what kinda results I get. Gordon The Lizard wrote in message ... Gordon wrote: FYI Corby I've had the exact same problem. I actually still have it. I've upgraded the ground to the engine, and now I'm looking to do the same to the AC unit/AC clutch. Also on my list of to-do's is to replace the spark plug wires. I have also grounded my HU, my EQL (under driver's seat), and my two amps (RF 500X and PPI 2160) all to the same spot (at amps) using 10awg wire. No help. I'm at a loss as well... Sorry, I'm jumping in without a history here, but did anyone upgrade the ground wire going to their firewall? Most cars ground to the fender, which is bolted to the firewall. But all of these parts are painted before assembly, so it's a ****-poor electrical connection. |