Yes you need to sort through them, I'm afraid it is all very dis jointed, and sadly I am now way too busy with the business to sort it all out as I had originally intended, the best one is to find the thread where I helped
and use that as a reference.
Maybe someone on W220 Forum can help me, I'll post a new thread how we can do this
is quite correct ......................
OK, lets expand on this a bit .......................
Basically what I'm saying (as I have said many times before), is this:- Consider the W220 Cars as 3 options for an Android Install .......................
Bose D2B , Bose MOST and No Bose ....................
If the Car has BOSE and MOST F/O then you can get an F/O Adaptor, but because it only works on 2 Channels you don't get as much Volume, so you are running the H/U Volume much higher than normal, and therefore distortion creeps in.
Also you lose the Sub, and Centre Dash Speakers, so again it doesn't sound as good !!
Also you lose the ability to Fade front to Rear from H/U !!
I recommend Wiring Centre Dash and Sub with the 6m Cable as per a D2B Bose Car below
If you do not do this because you can't be assed don't come on here spouting that Androids sound crap compared to COMAND, when properly installed and set up they sound better
With a BOSE D2B Csr there is no F/O Adaptor available, the correct way to do this is remove the Bose Amplifier, run the 6m Cable to rear of Car and hard wire the H/U's 4 x 50W to the LR / RR / LF & RF Speaker Wires at Amplifier, and then hard wire the Centre Dash and Woofer, (monaural) , like this :- Centre Dash + to LF- and Centre Dash - to RF+ do the exact same with Woofer to LR- and RR+ .................
Now the Speaker system is working as MB intended, and if you wish, later down the line you can disconnect Rear Sub and add aftermarket Amp to Rear Sub, via the Sub out Phono on the H/U .....................
If you have a "No BOSE" W220 then you are laughing, (like I was), because all connections including Speakers are at the back of the old COMAND H/U, and your Centre Dash and Woofer are already wired monaural as I said above
Adding an Amplified Sub is exactly what I did on my SLK R170, however I have found that on W220 there is, (for my Volume Taste), really no need as it is a much quieter Car inside than the R170 is with Roof Down at 100mph
My taste in Volume, FWIW, is a mid to loud (can still hear a passenger talking in a slightly raised voice), but very Hi Quality sound rather than a humongous thump thump noise
Most folk over "drive" their Bass btw
The stock W220 Speakers in my (Non BOSE) Car are in good condition, and they give me very good quality sound with the ERISIN
The stock R170 (front doors only) Speakers however were not in good condition, hence the Tweets were fine, but I replaced the 2 Mid Range in the Front Doors, then added 2 Tweets and 2 Mid Range in the Rear Bulkhead, and also added a surface mounted Active (Amplified) Sub on the Rear Bulkhead
The R170 ERISIN now sounds absolutely amazing