676 Upgrade - Match Up 8 Harness?

[Fady]

Having very quickly reached the conclusion that the S676 Hifi Speaker System doesn't really cut the mustard, I thought that I would upgrade the basic speakers and then opt for the Match Up 8 amp for its (ha ha) seamless integration. I have now been back and forth with an online supplier who to be fair is trying to get some details so as to supply me with a bespoke harness.

As I have gathered from other posts such as viewtopic.php?p=2061936&hilit=676#p2061936 - some fettling is required to the standard BMW harness. Questions I have had so far include number of channels 676 makes use of and whether the door mid and tweeter work off 1 channel or 2. I have been able to confirm that factory setup is akin to 8 channels rather than a suggested 10 with door mid and tweeter being together and not separate. Final request was for me to supply a photo of the end of the existing harness but I said that this was not a two minute job as requires the removal of trim with a half put away roof.

Just wondering on the off chance if anyone has any similar photos to hand and/or some additional insight? Otherwise I will just find time at the weekend to have a go at the trim and maybe just leave it off pending actual fitment of the amp.

[AnubisZed]

Channels are...

Front Left (mid & tweeter)
Front Right (mid & tweeter)
Rear left (mid)
Rear right (mid)
Subwoofer left
Subwoofer right
Woofer left & right (footwells)
Front centre (mid)

I've attached the standard (AFAIK) female adaptor loom for the Match 8

plug1.jpg (126.25 KiB) Viewed 167 times

And a photo I took of my plug for my amp (ignore the craked case )

20240309_145530.jpg (105.99 KiB) Viewed 167 times

Here's the pinout for the 42 pin plug.
https://www.dropbox.com/scl/fi/3moidjo3 ... cdi41&dl=0

Hope that is helpful for you.

[Fady]

@AnubisZed - a scholar and a gentleman as ever Looks like everything is covered there to set me well on my way - had already visited your channel to see what effort is required to change the speakers.

What happened to your harness then - accident or design?!

[AnubisZed]

@AnubisZed - a scholar and a gentleman as ever Looks like everything is covered there to set me well on my way - had already visited your channel to see what effort is required to change the speakers.

What happened to your harness then - accident or design?!

No problem, glad I could help.

I've just retrofitted the full 676 system to mine and had that plug spare from a job lot of wiring loom someone gave me, alas it fell on the floor at some point and I stood on it. But it's all OK now, holds the two inner parts that hold the wires and it clips into the top of the amp, so all good

[B21]

The problem I believe remains that the harness AF supply is for 3/5/7 etc cars ..none of which has woofers and subwoofers..so some cutting n shutting will be required and/or some trade off ..the high power Match 8 channels really need to drive the subs and also the woofers need to be driven individually not as a pair..so with 8 channels probably best to drive the subs with one high power channel..so a pair of 4 ohm in parallel would be best..

The good news is that the Match 8 supports virtual processing unlike the Match 7 which allows a number of tricks to be performed..

[john-e89]

I’ve got this in the car….no need for all that fancy tech bollocks….

[B21]

I’ve got this in the car….no need for all that fancy tech bollocks….

Nice

[john-e89]

I’ve got this in the car….no need for all that fancy tech bollocks….

Nice

I’m stuck in the old days of throwing a new head unit in your xr3i on a Saturday afternoon in half an hour, and running a couple of signal leads to an amp big as a house and some wires to a bass bin…all in by tea time….

I sooooooo need to get into the 20th century….

[B21]

I’ve got this in the car….no need for all that fancy tech bollocks….

Nice

I’m stuck in the old days of throwing a new head unit in your xr3i on a Saturday afternoon in half an hour, and running a couple of signal leads to an amp big as a house and some wires to a bass bin…all in by tea time….

There’s a certain charm to low tech solutions…