12-13-2011, 02:23 AM
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#1
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Registered User
Join Date: Nov 2006
Location: In the garage...
Posts: 1,734
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jaykay,
I just checked the Bentley and the M490 and M680 radio/amp wiring is identical except for the add'l lines from amp to DSP actuator panel (for MY'00). So the good news is you should be able to drop in a M490 amp eliminating M680 amp and DSP panel provided there are 3 plugs on your amp (one each for DSP panel, input from h/u, power & output to speakers). Please confirm.
Plus, still need to know if your rear speakers are wired to the amp or head unit - pretty sure it's gonna be amp. To confirm, look at the physically largest plug on amp (or plug w/ largest wires). Are pin locations 5, 6, 15, and 16 empty or filled (should be a 20 pin connector plug)? They will be two pairs in the middle of the plug, a pair in each row. If filled, which I'm pretty sure they are, they should have a white, white w/ brown stripe, black and a black w/ brown stripe colored wires in them. As such, you will need to find a 6 channel M490 amp to drop in (mine is only a 4ch). If they are empty, then the rear speakers are being driven off your head unit and if you have 3 separate plugs mine will work. We can talk off-line to test as such, etc.
For speakers, I recall using Infinity Kappa 4.25" coaxials in the dash and 6.75" in the door (only connecting woofer in doors b/c these amps have a built in cross over). I had the upgraded PNP rear speaker kit not the OEM one. The rears, like in a home theater set up only provide surround so it's not imperative they be of high quality as they just draw the music towards your ears in the seat as opposed to it being pulled forward under the windshield.
Good luck
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12-13-2011, 07:39 AM
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#2
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Thanks for this valuable information. I will have to try and access my car during the holidays.....it's wrapped up!
Quote:
Originally Posted by Burg Boxster
jaykay,
I just checked the Bentley and the M490 and M680 radio/amp wiring is identical except for the add'l lines from amp to DSP actuator panel (for MY'00). So the good news is you should be able to drop in a M490 amp eliminating M680 amp and DSP panel provided there are 3 plugs on your amp (one each for DSP panel, input from h/u, power & output to speakers). Please confirm.
Plus, still need to know if your rear speakers are wired to the amp or head unit - pretty sure it's gonna be amp. To confirm, look at the physically largest plug on amp (or plug w/ largest wires). Are pin locations 5, 6, 15, and 16 empty or filled (should be a 20 pin connector plug)? They will be two pairs in the middle of the plug, a pair in each row. If filled, which I'm pretty sure they are, they should have a white, white w/ brown stripe, black and a black w/ brown stripe colored wires in them. As such, you will need to find a 6 channel M490 amp to drop in (mine is only a 4ch). If they are empty, then the rear speakers are being driven off your head unit and if you have 3 separate plugs mine will work. We can talk off-line to test as such, etc.
For speakers, I recall using Infinity Kappa 4.25" coaxials in the dash and 6.75" in the door (only connecting woofer in doors b/c these amps have a built in cross over). I had the upgraded PNP rear speaker kit not the OEM one. The rears, like in a home theater set up only provide surround so it's not imperative they be of high quality as they just draw the music towards your ears in the seat as opposed to it being pulled forward under the windshield.
Good luck 
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986 00S
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12-27-2019, 07:05 PM
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#3
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Yes, just getting back to this now!
I want to get rid of the DSP module and still power my front and rear speakers.
The current amp in there now is an M680 6x40 with a large pink connector and small black one below it. It is on a 2000 MY car.
Just wondering if anyone knows the correct model number for an amp that will accomplish this and fit. I believe that I need an M90 6x40 amp.
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986 00S
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12-28-2019, 06:13 AM
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#4
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Registered User
Join Date: Nov 2018
Location: Pomona, CA
Posts: 158
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You just need to jumper pins 2 and 6 on the connector. Worked for me. Radio functions as before, and you can still use the tone controls on the HU.
Crappy reception and funky functionality known in the CDR220 have me about to replace it with the Pioneer SPH-10BT.
(sorry for the poor focus)
Cheers
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'99 986 Base
2010 Golf TDI
'74 914 2.0
'56 356A
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12-28-2019, 06:47 AM
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#5
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Wow great tip! Really???? So I take it that this is part of the harness that plugs into the DSP? Do your rear speakers work as well; all six?
(Not sure why I am bothered as the exhaust dominates the soundscape most of the time)
So for everyone else:
1. Disassemble lower centre console
2. Remove DSP module
3. Unplug harness from DSP module
4. Jump pins 2 to 6
5. Enjoy lower centre console space along with all six speakers and all audio controls
Yes?
I will try and pick up some suitable jumper pins and try it out. Much better than putting in a whole new amp. Let me know what jumpers you used that fit and don't drop out...
Thanks
J
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986 00S
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12-28-2019, 12:14 PM
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#6
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Registered User
Join Date: Nov 2018
Location: Pomona, CA
Posts: 158
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That's it. All speakers work
Whenever I lifted my foot off the throttle to apply the brake, I would get caught on the footwell light, plus I have long legs, and wanted some extra legroom.
Looking at the schematic, I figured it out. In my case, I was installing the console delete, so I had taken the DSP and CD Holders out completely, and installed the footwell lights into the side covers.
__________________
'99 986 Base
2010 Golf TDI
'74 914 2.0
'56 356A
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12-28-2019, 04:58 PM
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#7
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Nice! I really like the console delete. I am average height but have long legs and it really gets in the way sometimes.
I will give this a quick try this weekend if I can get of some jumpers; don't have any wire on hand
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986 00S
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