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BMW 3-Series (E90 E92) Forum
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JBL MS8 Whine with OEM Hifi headunit.
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01-24-2017, 07:03 PM | #1 |
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JBL MS8 Whine with OEM Hifi headunit.
Hello everyone,
I have a bit of an issue that is driving me absolutely nuts. I had a setup with a JBL MS8 and a Dynavin N6. They were hooked up directly via RCA. I did have a Technic harness but I bypassed the power/ground and Rca audio inputs. I didn't like the Dynavin so going back to stock I'm having issues where there is annoying static. It becomes less if I lower the the gain. I have tried different grounding points to no avail (battery and factory grounding point on rear fender) I never had an issue when using the dynavin now im stumped. The OEM hifi amp works just fine What can I do... i need my static free music back |
01-24-2017, 09:28 PM | #4 |
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Have you tried hooking up another source directly to the MS8.
I guess the Dynavin counts but it has normal RCA's I think not a differential output, if you hooked through the RCA's and not the speaker outs. |
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01-24-2017, 10:59 PM | #6 |
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taibanl and used to have one of those.
There is a big ms-8 thread here somewhere you might be able to find some of the old experts on ms-8 there. You shouldn't actually have to put anything inbetwen but maybe a differential to single output adapter would help. http://www.e90post.com/forums/showth...&highlight=JBL http://www.e90post.com/forums/attach...9&d=1275887588 Last edited by ctuna; 01-24-2017 at 11:04 PM.. |
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01-25-2017, 12:36 AM | #7 |
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Here is a far shot but I had a very similar issues. For a couple of years I had a whine and a bad radio signal. All of it was caused by a dash cam power supply that I had hard wired into my car. As soon as I removed that specific power supply, QUIET. Try disconnecting anything plugged into a cigarette lighter or anything you may have hard wired in before you give up on your deck.
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2009 118i Monaco Blue "Maximillion"
2009 335i Saphire Black M Sport "Leopold" Cobb stage 2 aggressive tune, Mishimoto FMIC, Cobb charge pipe, Cobb catted down pipes, Forge diverter valves, BMS inlets and DCI, Cyba scoops and M Individual Audio retrofit and M3 gauge cluster retrofit. 2011 328i Titan Silver M Sport "Franzel" <--Wife's car |
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01-25-2017, 03:40 AM | #8 |
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I wish it was as easy as that my friend. Other than the ms8 the car is bone stock. Nothing plugged in sadly.
Out of desperation on an E46 forum some guy suggested to reground the HU and amp at a common point on the chassis. Would you guys have any advice or comments? I know the whole body is technically negative, just need a solid connection. I'm debating to run a small wire from the front to the back of the car just to see if this cures it. By the way all your help is hugely appreciated! |
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01-25-2017, 07:34 AM | #9 | |
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Quote:
Also, you did not mention what factory set up you have. If it is the normal stereo without external amp, bypass the Technic harness and try wiring the MS-8 directly to the deck speaker outputs.
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2009 118i Monaco Blue "Maximillion"
2009 335i Saphire Black M Sport "Leopold" Cobb stage 2 aggressive tune, Mishimoto FMIC, Cobb charge pipe, Cobb catted down pipes, Forge diverter valves, BMS inlets and DCI, Cyba scoops and M Individual Audio retrofit and M3 gauge cluster retrofit. 2011 328i Titan Silver M Sport "Franzel" <--Wife's car |
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