PCCM+ install woes--NO SOUND
10-25-2020, 07:17 PM
#107
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Unfortuantely, the pins included in the kit are too large for the Amp connector. They only fit the brown and black connectors at the head unit.
@b3freak will that Hi/Low level converter bypass the amp? What exactly will this harness do?
@b3freak will that Hi/Low level converter bypass the amp? What exactly will this harness do?
Basically, the Hi/Lo converter lowers the voltage of the audio signal to a more acceptable level for a car's amplifier inputs. Most amplifiers need a LINE-LEVEL source; therefore, SPEAKER-LEVEL output is too strong. The results are the audio coming from the speaker will be overdriven producing harmful distortion.
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Mikołaj (11-13-2020)
11-06-2020, 01:20 PM
#108
Thank you @T3C for starting this thread and @b3freak , @porschebaot and @Paul Schuepp for the posts on this thread - you have helped me tremendously. I'm in the process of installing a PCCM+ in my '00 Boxster S that is OEM equipped with:
I wanted to add my finding here as each option puts a slightly different spin on the procedure and details and I've not seen anyone posting with the above OEM configuration.
Remaining issue I'm working on (with info from the posts above):
- CDR-220 Becker head unit
- HAES AMP (M490)
- DSP (M680)
I wanted to add my finding here as each option puts a slightly different spin on the procedure and details and I've not seen anyone posting with the above OEM configuration.
- Although it's fairly obvious, when replacing the radio in a car with the DSP option, you can remove the DSP control panel (mine's a NOKIA). This sort of confused me at first because I was worried about losing my 1 DIN slot storage bin. Just remove the DSP control box and stuff the DSP control header somewhere back in the lower center console.
- Since this is an analog car with an analog AMP, you do need to set the CAN/AMP option in the PCCM+ Settings menu (as detailed in posts above). This is confusing in the Porsche Tech Bulletin as it says in step (7) that this is need on '97-'02 vehicles with the PCM1 option.
- And, like mentioned above for an AMP car, with the DSP option, you also need to tell the AMP to power up when the new radio turns on by grounding pin 17 on the 18-pin connector at the amp and float the existing wire coming into that pin 17. THE DIFFERENCE in a car with the DSP option, is that wire is not red/black/yellow, it is white/green. @b3freak 's wiring diagram post #54 has this on it (DSP DATA) but this threw me for a bit so I checked the Bentley manual and it confirmed it, and then reread @b3freak 's post.
- #3 was even harder for me to figure out as my 18-pin AMP connector shroud is part of the connector, as far as I can tell, and I can't get to the pin latches to remove any pins!
- The MOST control unit and connecting line are NOT needed in an analog car like mine with the AMP and DSP option. Leave it out and save yourself a few ounces of sprung weight. :-)
- The yellow connector does connect on the top most part of the connector closest to the edge of the unit.
Remaining issue I'm working on (with info from the posts above):
- I, too, still have over amplified sound right now. I'll try adjusting the OUTPUT level feeding the AMP or see if, as @theprf sayx, there is a way in the radio to switch the output the AMP to LINE LEVEL, or if perhaps the other large connector outputs at LINE LEVEL. If I can't figure that out, I'll buy/make an ISO resistive adapter like @porschebaot mentioned in his install guide.
11-10-2020, 02:12 PM
#109
Track Day
Guys,
My car is 996 2000 PCM1, Bose Sound System, without fiber optic - fully stock. Everything works perfect before installing PCCM+.
I have read all your posts and also other topics regarding PCCM+ and still cannot find answer to one question.
As point 6.5.1 of the Porsche manual is saying about ground the amp we were trying to find the plus with 18 connectors and what comes out:
- I dont have such a plug by the amp
- amp and the plug is in different place than in manual (also CD changer is in other position)
Can anyone help with that?
Moreover without grounding the AMP, PCCM+ works almost perfect - the only problem for now is overamplified sound (but I am awaiting for the low/high adapter - for sure its not caused by the lack of grounding).
My car is 996 2000 PCM1, Bose Sound System, without fiber optic - fully stock. Everything works perfect before installing PCCM+.
I have read all your posts and also other topics regarding PCCM+ and still cannot find answer to one question.
As point 6.5.1 of the Porsche manual is saying about ground the amp we were trying to find the plus with 18 connectors and what comes out:
- I dont have such a plug by the amp
- amp and the plug is in different place than in manual (also CD changer is in other position)
Can anyone help with that?
Moreover without grounding the AMP, PCCM+ works almost perfect - the only problem for now is overamplified sound (but I am awaiting for the low/high adapter - for sure its not caused by the lack of grounding).
Last edited by Mikołaj; 11-10-2020 at 02:18 PM.
11-10-2020, 02:20 PM
#110
Drifting
Guys, I have read all your post and also other topics regarding PCCM+ and still cannot find answer to one question. My car is 996 2000 PCM1, Bose Sound System, without fiber optic - fully stock. Everything works perfect before installing PCCM+.
As point 6.5.1 of the Porsche manual is saying about ground the amp we were trying to find the plus with 18 connectors and what comes out:
- I dont have such a plug by the amp
- amp and the plug is in different place than in manual (also CD changer is in other position)
Can anyone help with that? Moreover without grounding the AMP, PCCM+ works almost perfect - the only problem for now is overamplified sound, but I am awaiting for the low/high adapter. For its not caused by the lack of grounding.
As point 6.5.1 of the Porsche manual is saying about ground the amp we were trying to find the plus with 18 connectors and what comes out:
- I dont have such a plug by the amp
- amp and the plug is in different place than in manual (also CD changer is in other position)
Can anyone help with that? Moreover without grounding the AMP, PCCM+ works almost perfect - the only problem for now is overamplified sound, but I am awaiting for the low/high adapter. For its not caused by the lack of grounding.
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Mikołaj (11-13-2020)
11-10-2020, 02:26 PM
#111
Track Day
You may want to try the http://911uk.com forum. The seem to have more experience than the US. They helped me out.
for the moment I will wait for the adapter from Porsche and if everything will works I will leave as it is.
11-10-2020, 02:35 PM
#112
Race Car
One of my cars has the M490/M680 combo and I would really like to get rid of the M680 DSP option, so I will try the ground pin# 17 solution when I have time.
11-11-2020, 03:27 PM
#113
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Guys,
My car is 996 2000 PCM1, Bose Sound System, without fiber optic - fully stock. Everything works perfect before installing PCCM+.
I have read all your posts and also other topics regarding PCCM+ and still cannot find answer to one question.
As point 6.5.1 of the Porsche manual is saying about ground the amp we were trying to find the plus with 18 connectors and what comes out:
- I dont have such a plug by the amp
- amp and the plug is in different place than in manual (also CD changer is in other position)
Can anyone help with that?
Moreover without grounding the AMP, PCCM+ works almost perfect - the only problem for now is overamplified sound (but I am awaiting for the low/high adapter - for sure its not caused by the lack of grounding).
My car is 996 2000 PCM1, Bose Sound System, without fiber optic - fully stock. Everything works perfect before installing PCCM+.
I have read all your posts and also other topics regarding PCCM+ and still cannot find answer to one question.
As point 6.5.1 of the Porsche manual is saying about ground the amp we were trying to find the plus with 18 connectors and what comes out:
- I dont have such a plug by the amp
- amp and the plug is in different place than in manual (also CD changer is in other position)
Can anyone help with that?
Moreover without grounding the AMP, PCCM+ works almost perfect - the only problem for now is overamplified sound (but I am awaiting for the low/high adapter - for sure its not caused by the lack of grounding).
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Mikołaj (11-13-2020)
11-11-2020, 03:46 PM
#114
Track Day
I don't know, all the cables were plug&play. Problem is the white noise ( I am awaiting for the adapter from Porsche) and automatic volume adjustment during acceleration (we will see if anything change after installtion of adapter, but I doubt).
11-13-2020, 06:01 AM
#115
Track Day
But still 2 topics:
1) automatic volume adjustment (due to increasing speed) doesnt work - anyone? Can anybody confirm here that it works in his car with PCCM+?
2) nav info on cluster - Porsche said that they see only cruisecontrol option - no audio, no nav
Last edited by Mikołaj; 11-13-2020 at 06:43 AM.
11-13-2020, 11:12 AM
#116
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White noise problem is solved - Porsche send us the adapter.
But still 2 topics:
1) automatic volume adjustment (due to increasing speed) doesnt work - anyone? Can anybody confirm here that it works in his car with PCCM+?
2) nav info on cluster - Porsche said that they see only cruisecontrol option - no audio, no nav
But still 2 topics:
1) automatic volume adjustment (due to increasing speed) doesnt work - anyone? Can anybody confirm here that it works in his car with PCCM+?
2) nav info on cluster - Porsche said that they see only cruisecontrol option - no audio, no nav
11-13-2020, 11:14 AM
#117
Track Day
11-13-2020, 11:29 AM
#118
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I can't confirm the automatic volume control will work at the moment.
11-13-2020, 11:36 AM
#119
Track Day
11-13-2020, 11:51 AM
#120
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No, about this aftermarket adapter. I couldnt believe too. Post #32 - https://rennlist.com/forums/996-foru...cm-plus-5.html
That harness adapter in post#32 is basically a Hi/Lo speaker level-to-line level adapter. From the pictures, it appears to serve those with units with the Brown "B" connector to the amplifier. This adapter would not serve people with the Porsche Harmann HiFi analog systems (e.g. CDR-220) where the headunit outputs line-level from the C1 Yellow. That's the way it was on my last 996.