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Old 11-09-2012, 11:53 AM   #1
RJDaly28
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Dynavin Engine Noise with RCA out....??

Hello all. I'm in the middle of having an amplifier and new speakers installed in my car right now, and my installer is getting engine noise through the RCA outs on the Dynavin.

He's tried an outside power source, new ground, multiple amplifiers, RCA's outside the car so there cant be interference, etc and seems to have eliminated any source of the problem except for the Dynavin.

It's not terrible, but it's also not right. Has anyone else run into this issue? We're sort of standing here shrugging our shoulders and it would be great to get my car put back together.
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Old 11-09-2012, 06:15 PM   #2
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Am I reading this right, you basically said it's the Dynavin, right? What is changing before vs after? Are you going from speaker level to RCAs or have you been using RCAs from the Dynavin all along?
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Old 11-09-2012, 06:37 PM   #3
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It soundalike you've got a grounding problem. Make sure that your installer is not using the battery ground lug as a audio system ground. The head unit should use the same ground as the original head unit. The amps, etc. should use the original oem amp ground above and slightly forward of the oem amp's location.
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Old 11-09-2012, 06:40 PM   #4
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Quote:
Originally Posted by opti View Post
Am I reading this right, you basically said it's the Dynavin, right? What is changing before vs after? Are you going from speaker level to RCAs or have you been using RCAs from the Dynavin all along?
I had been using the speaker level outputs to the H/K amp. Didn't have any noise. Switched to the RCA outs to a Kenwood 5-channel amplifier and now I have a hiss at zero/low volume and a slight engine whine at low volume.
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Old 11-09-2012, 06:44 PM   #5
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Originally Posted by markusmarkus View Post
It soundalike you've got a grounding problem. Make sure that your installer is not using the battery ground lug as a audio system ground. The head unit should use the same ground as the original head unit. The amps, etc. should use the original oem amp ground above and slightly forward of the oem amp's location.
I misspoke. He is using a new ground, and the head unit is grounded to the same place as the amplifier.
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Old 11-09-2012, 06:48 PM   #6
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Originally Posted by RJDaly28 View Post
I had been using the speaker level outputs to the H/K amp. Didn't have any noise. Switched to the RCA outs to a Kenwood 5-channel amplifier and now I have a hiss at zero/low volume and a slight engine whine at low volume.
Have you used different RCAs while everything else is the same? (RCAs with Dynavin, Kenwood amp, same everything else) Are you using your stock wiring for RCAs?
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Old 11-09-2012, 06:51 PM   #7
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Have you used different RCAs while everything else is the same? (RCAs with Dynavin, Kenwood amp, same everything else) Are you using your stock wiring for RCAs?
I was using the stock wiring when it was hooked up to the stock amp. Now I'm using RCAs. The installer tried several sets of RCA cables - same result every time.
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Old 11-09-2012, 07:03 PM   #8
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if you turn the gain down some do you still get sufficient volume?
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Old 11-09-2012, 11:58 PM   #9
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Originally Posted by jeffb325@DynavinSolutions View Post
if you turn the gain down some do you still get sufficient volume?
I had my installer button everything up since I needed the car back so I haven't tried that myself. I'm thinking there should be a little room to do that. This system is incredibly loud to my ear. Beyond 40 is ear splitting.

(It sounds amazing BTW)

The noise needs to go though, it is quite noticeable at zero or low volume.
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Old 11-10-2012, 12:28 AM   #10
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Yep, your gain is to high....
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LATEST DYNAVIN INFO: http://forum.e46fanatics.com/showthread.php?t=1044105
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///AVIN INFO: http://forum.e46fanatics.com/showthread.php?t=1015704
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Old 10-16-2013, 04:01 PM   #11
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Im having the same trouble except mine is still doing it with the gain turned all the way down. If I use an iPod as my source using the same RCA cable I don't get it or when the car is not on. I've tried several RCA cables and ground spots. The static is annoying. I don't get get it though when I use my AudioControl LOC, but the bass isn't as good and the sound is muffled.
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Old 10-24-2013, 01:16 PM   #12
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In general, If you run aftermarket amps, processors, etc... in an E46 its CRITICAL that you ground your trunk components to the stock grounding point in the trunk, left rear wheel well, its a stud with a bunch of the stock brown ground wires going to it. Grounding your amps etc... to the battery creates a difference in resistance to ground between the head unit and amps, known as a "ground loop"....also known as noise.
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LATEST DYNAVIN INFO: http://forum.e46fanatics.com/showthread.php?t=1044105
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Last edited by jeffb325@NavigationSolutions; 10-24-2013 at 01:17 PM.
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