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#1
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Audio System Layout
So, where did you run your wiring? I’m open to any kind of ideas about what I should do, and after trying to fix this countless times, my X is staying stripped apart until I finally get it right this time. Let me know what you think! Sent from my iPhone using Xoutpost.com
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2005 X5 E53, 167k Miles: Kenwood DNX893S Head Unit, Mud Flaps (Rear Only) , Rim Shopping(WIP), Full Spectrum RGB Halos, |
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#2
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So you have checked that the noise is produced on the RCA cable and not some other pathway? (Check with another signal source with short direct RCA line to amplifier.) Is the body of both signal source and amplifier in good ground connection so there's no potential difference for ground loop?
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E39 530dA -02 M-Sport Messing metallic E53 X5 3.0dA -06 Sport Stratus grey |
#3
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Quote:
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2005 X5 E53, 167k Miles: Kenwood DNX893S Head Unit, Mud Flaps (Rear Only) , Rim Shopping(WIP), Full Spectrum RGB Halos, |
#4
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Audio System Layout
At this point, this is basically an SOS. I’m at my wits end, various car audio forums and subreddits wits end, and my local BMW mechanics wits end. My X needs to be back up and running by the 10th of January so that I can take it back to school with me. I’ve put about 85 hours into working on the audio system since the beginning of December. I’m willing to provide whatever information anyone needs to help me diagnose. Cars an 05 3.0i E53, non-dsp from factory. If anyone can help, I’m basically begging for whatever you can give me.
Here’s what the system sounds like as of right now: https://youtu.be/Z2HPx8YX3ZI Sent from my iPhone using Xoutpost.com
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2005 X5 E53, 167k Miles: Kenwood DNX893S Head Unit, Mud Flaps (Rear Only) , Rim Shopping(WIP), Full Spectrum RGB Halos, |
#5
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What head unit are you using?
There's been quite a few reports of the Chinese generic android units and noise problems which is sometimes due to the poor design of the actual head unit. |
#6
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While of Asian origin, it’s of good quality. Kenwood 893s. I ended up switching out my amp for a different one and the noise mostly went away, but I can still hear the frequency of the light pulse. Not sure why it exists in the system in the first place.
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2005 X5 E53, 167k Miles: Kenwood DNX893S Head Unit, Mud Flaps (Rear Only) , Rim Shopping(WIP), Full Spectrum RGB Halos, |
#7
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Most folk don't run line-level audio over long distances in the car - that's most likely your problem. Low-level un-balanced audio signals, esp. over long cable runs, are very suscepable to induced noise.
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) Last edited by wpoll; 12-31-2020 at 02:36 PM. |
#8
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I think most people run low level signals (RCA) to their amps. I know I always have. Good quality, shielded and balanced RCAs should be used for the long run front to back.
What cabling are you using lkv0315? Post some pictures so we can see where/how everything is mounted and their locations.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#9
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There's no such thing as balanced RCA audio (connectors or cabling) - it's a two-pole connection system so there's only a signal wire and a return wire. Balanced signals require two signal wires (often referred to as hot and cold) plus a shield wire. Three pin XLR connectors are commonly used in balanced audio connections - like I have on my hi-fi at home (Perreaux). If your system is using long RCA connections from the head unit to the aftermarket amp in the rear and the audio is clean, then clearly you have done all the work correctly (as I imagine you have - from what we have seen of your work!). It only takes an incorrect earth connection or poor quality cables etc. for electrical noise problems to sneak in...
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#10
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Quote:
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
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