Bose Amp (M680)

[rwmdouglas]

Does anyone have a speaker schematic for the M680 Amp/speaker system?

[Loren]

What model year and what car?

What are you trying to do? a repair? or ?

[rwmdouglas]

Does anyone have a speaker schematic for the M680 Amp/speaker system?

Loren: Sorry, 2003 996 coupe. Trying to replace existing head unit and amp, but use existing speakers.

[Loren]

Ok, here you go...

[rwmdouglas]

Ok, here you go...

Got it, thanks, Loren

[thormann]

Hi,

I want to do exactly the same. Do you have any hints? Which Amp do use use?

Thanks, Marco

[rwmdouglas]

Hi,

I want to do exactly the same. Do you have any hints? Which Amp do use use?

Thanks, Marco

Marco:

I'm by no means an audiophile, but was looking for more capability than volume and sound "quality". However, so far my wife and I are more than satisfied with the DIY job of this weekend. I installed an Alpine MRP F300 amplifier (75W per channel) mostly because it fit nicely to the left of the exisitng BOSE amp (if you want more power at twice the price the Alpine PDX 4-100 appears to fit there as well) and was an easy connect to the battery. I spliced the existing speaker wires from the BOSE amp harness to the Alpine (dash and door to "front" and rear to rear per the schematic). The Head Unit is a Pioneer DEH P7900BT (with GEX P10HD and Sirius tuners) that provides analog and digital AM/FM, satellite, Blue Tooth phone, single CD player, and takes IPOD and USB. The remaining task for next weekend is to feed the subwoofer in the back from the existing head unit subwoofer output.

Bill

[thormann]

Thanks Bill!

Actually I am satisfied with the sound quality of my Bose package! However, I have only the CDR23 installed am I am looking for MP3, GPS, DVD, Bluetooth etc.

You have connected the dash and door speaker to a common output of the Amp! Did you use any filter? I think the door speaker are more bass orientated and the dash speakers for higher frequencies! How is the sound?

The remaining task for next weekend is to feed the subwoofer in the back from the existing head unit subwoofer output.

Does it mean you connect the sub directly to the Pioneer head unit?

The Alpine MRP F300 looks good to me and runs with 2 Ohm speakers!

Thanks, Marco

[rwmdouglas]

Thanks Bill!

Actually I am satisfied with the sound quality of my Bose package! However, I have only the CDR23 installed am I am looking for MP3, GPS, DVD, Bluetooth etc.

You have connected the dash and door speaker to a common output of the Amp! Did you use any filter? I think the door speaker are more bass orientated and the dash speakers for higher frequencies! How is the sound?

The remaining task for next weekend is to feed the subwoofer in the back from the existing head unit subwoofer output.

Does it mean you connect the sub directly to the Pioneer head unit?

The Alpine MRP F300 looks good to me and runs with 2 Ohm speakers!

Thanks, Marco

Marco:

On the filter question, "no", and to us the sound is as good or better than with the CDR23.

With regard to the sub, the amp does not have a direct sub output, but rather a RCA output to feed another sub amp. Since the Pioneer head unit has a direct 50W subwoofer output, I am going to at least try running it straight from the head unit. Hope the weather will cooperate for doing it this weekend.

[softail]

Hi, I don't really understand what you've done with the wires that were connected to the Bose Amp...

Did you unplug them and replug to your new amp ?

And how did you manage to put dash and door speakers together ? In Bose system, they are 2 ohms...

[thormann]

@Bill

Did you get the sub working?

[thormann]

@Loren

Of which car/year is the posted input/output diagram of the Bose system! In my 996 4S Coupe MY04, I have only 5 lead pairs going to tghe speakers plus another pair going to the sub! I have measured the resistance: One output seems to be connected in series to 2 speakers. However in the posted diagram 6 speaker outputs are shown, i.e. seperate outputs for all speakers.

Where are the terminals (A1, A2... B1, B2...) located in the plugs?

Thanks, Marco

[thormann]

@Loren

Of which car/year is the posted input/output diagram of the Bose system! In my 996 4S Coupe MY04, I have only 5 lead pairs going to tghe speakers plus another pair going to the sub! I have measured the resistance: One output seems to be connected in series to 2 speakers. However in the posted diagram 6 speaker outputs are shown, i.e. seperate outputs for all speakers.

Where are the terminals (A1, A2... B1, B2...) located in the plugs?

Thanks, Marco

Would be helpful to know, what is the reason for the discrepancy !!

[Loren]

[thormann]

Thanks!

But it says, wirering is similar, only length differs! Anyway...

Could you post the entire sheet of the 2002 and 2003 wiring diagram with Bose! Then I should have all information together. Unfortunately I only have the 2000 wiring diagram and this is still without Bose!

[thormann]

No chance, Loren? ;)

[Loren]

MY2002 is conventional radio/amp wiring.

MY03 and newer uses MOST (fiber optic network) wiring.

There is nothing even close to compare.

[thormann]

I know, and I do not want to compare! I will completely remove the MOST and install the 2002 Bose amp.

Believe me, the two complete wiring sheets of the radio/speakers(2002 + 2003) would help me a lot, since I want to keep the existing speakers!

[Dazzevans]

On 4/20/2008 at 3:43 PM, Loren said:

MY2002 is conventional radio/amp wiring.

MY03 and newer uses MOST (fiber optic network) wiring.

There is nothing even close to compare.

I have a copy of the M680 audio option pack and it refers to Fibre Optic cables. Mine is a MY2002 and has the M680 option.