Stereo Information (Wiring, Upgrades, etc...)

Discussion in 'Infotainment and Electronics (Nav, Audio, Video, Bluetooth)' started by smdandb2, Jun 17, 2015.

  1. acull2000

    acull2000 Well-Known Member

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    Understood.

    Only audiable mod is exhaust; which does not play well with the sound synth.

    From trial and error with fuse 27/ Forscan, best combination seems to be ANC ON and synth OFF. Few of us in other threads trying to work this out, but can't figure out how to achieve that.
     
  2. Relak

    Relak Well-Known Member

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    I'm getting a digital frequency sound coming from my speakers, which was present in the stock setup but not amplified with the aftermarket setup. I bypassed the factory amp so I know its the ACM that's causing the issue. After playing around with the ACM settings, I determined that switching the first bit in 727-01-01 to turn off the SDARS ant gets rid of the digital signal tone but I lose functionality with most of the audio sources (satellite, bluetooth, etc).

    The fact that the frequency goes away when I disable the SDARS is a pretty clear indicator of where the issue lies but does anyone have any ideas on what it could be specifically thats causing the issue?

    I've tried disabling the ANC, factory sound processing etc.
     
  3. Boggus

    Boggus Well-Known Member

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    Swapped my tweeters today with some MB Quarts
     
  4. mumbles

    mumbles Well-Known Member

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    Really? You're just going to drop that here and nothing else? So, how do they sound?
     
  5. Fenix

    Fenix Well-Known Member

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    I didn't see any pictures of the premium amp in here. Can someone help identify the correct plug/wires for splicing in RCA's?

    Considering this is hard to access, will it be worth the effort vs a LOC from a rear speaker? IMG_20170304_152804resized.jpg
     
  6. mumbles

    mumbles Well-Known Member

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    I'm going to do some wiring on mine in a bit, so I'll get you that info...

    The LOC will be much easier... I would use a tap over splicing though.
     
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  7. Racemaster

    Racemaster Well-Known Member

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  8. zsh8me2

    zsh8me2 New Member

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    20161030_152702 (2).jpg
    this is the custom interface that I made for the factory 401a shaker wiring.

    It takes the low level output from the factory system, splits it into two rca outputs, and it also takes the factory amp (5.98 volts) remote turn on, and converts it (using a relay and the factory amplifier power and ground) to 12v.
     
  9. Racemaster

    Racemaster Well-Known Member

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    There you go.Very nice job.Thats what I like to see,clean work.
     
  10. mumbles

    mumbles Well-Known Member

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    #310 mumbles, Mar 6, 2017
    Last edited: Mar 8, 2017
    I had some wiring to do, so I thought I'd put together a diagram that hopefully simplifies the 401a system. The first pic shows the physical amp in the drivers kick panel with the plugs labeled, and the second shows the overall system. In the wiring, I didn't put any colors because a lot of the colors listed in this sticky didn't match what was actually in my plugs... so, I just concentrated on the pin numbers and functions. Hope this helps somebody :D

    Amp photo
    S550_AMP_CONNECTORS.jpg

    Diagram
    PremDiagram.jpg
     
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  11. acull2000

    acull2000 Well-Known Member

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    I think you may have just helped me to identify exactly which pins to remove from the amp to disable the fake engine noises once and for all :)

    Do you have to remove any trim panels to get to the amp, or is it just sat there?
     
  12. wildcatgoal

    wildcatgoal @sirboom_photography

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    EPIC post, man. Thanks.
     
  13. Fenix

    Fenix Well-Known Member

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    The amp is not hidden at all its just awkward to get to since it's under the dash a bit. Stick your head in your foot well and look to the left side and up a bit

    Awesome info there mumbles!
     
  14. mumbles

    mumbles Well-Known Member

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    As Fenix says, you don't "have" to remove the trim panel, but it makes things easier...

    1. Pop off the cap on the hood release
    2. Push a 10mm socket into the hole of the hood release, and it will pop free the handle
    3. Pull up on the lower door scuff panels to create some room to wiggle the kick panel free
    4. Grabbing the rear of the kick panel, pull out towards the center console to free the rear retainer
    5. Still holding the rear of the kick panel, pull towards you to free the front retainers
     
  15. mumbles

    mumbles Well-Known Member

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    #315 mumbles, Mar 8, 2017
    Last edited: Mar 8, 2017
    Ok folks, new diagram time...
    This one shows how you would add aftermarket processors and amps by utilizing some connectors from Molex that just plug into the connectors at the factory amp. Racemaster did an awesome job using the 90 degree version of these plugs and enclosing them in a "project" box.

    This diagram is pretty generic, so please remember that there are literally hundreds of ways this could be done... although I have shown the center channel speaker, it's just for reference and is not part of the amplified output.

    S550_Prem_Custom_Stereo.jpg
     
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  16. acull2000

    acull2000 Well-Known Member

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    Great diagram [MENTION=20499]mumbles[/MENTION].

    For anyone interested, I can confirm the position of the amp seems to be the same on the EU variants. Looks something like this before you remove the panel, in the left hand side footwell:

    IMG_7689.jpg
     
  17. Mid_life_crisis

    Mid_life_crisis Well-Known Member

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    It looks like the molex connectors being purchased are bypassing the amplifier by connecting to the cable that was plugged into the amplifier at the factory. What happens to the noise cancellation circuitry? Seeing as it appears to be just being ignored, does the H/U do anything trying to compensate for the lack of effect? Or is it moot because that signal is just ignored anyway? Do you know if the engine noise is carried on those wires? Does bypassing them cut out the fake engine noise?
     
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  18. mumbles

    mumbles Well-Known Member

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    Correct, both factory amp and noise cancellation is bypassed. I can't imagine the head unit trying to compensate, a number of folks have done this and nobody has reported ill effects.
     
  19. Mid_life_crisis

    Mid_life_crisis Well-Known Member

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    Don't forget to share your results.
     
  20. rambunctious

    rambunctious Well-Known Member

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    anyone find if non board mount versions exist for the 0160 connector?

    Ramb
     
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