S650 Aftermarket Sound System

[Drewmandoo]

The Fan ducts are simple, here ya go.

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[ichie123]

AudioDesign in Jacksonville FL is around the corner from my house. They scanned my trunk with a 3D scanner. There is a little difference in the '24 with the fuel line, and why there is a little space in the original design pictured in his car. I also got the amp rack that they sell, and it fits in the '24. I will post in the next week when I get the subs in. I have Sundown SML 10" that are going into the new boxes. I wanted to save the trunk space and the passthrough to the back seats.

https://store.audiodesignscg.com/

You ever get that done? Interested in seeing the new design fit

 

[FriedCheese]

The Fan ducts are simple, here ya go.

Thanks but I, and I should have specified, meant the hold down/standoff bracket in the middle.

 

[Drewmandoo]

Oh that big boy, here ya go!

One thing to note, I wouldn't use PLA for it if you are in any southern area with hot temps, it will deform and make it very difficult to remove the spare tire screw.

 

[Ben Beard]

Where/ how is everyone mounting their bass knob? I am looking for a mounting solution without drilling any holes in the plastic of the dash.

 

[Drewmandoo]

Where/ how is everyone mounting their bass knob? I am looking for a mounting solution without drilling any holes in the plastic of the dash.

I have mine routed to the cubby arm rest. I fished the wires under the center console with the tweeter wires. Popped a small hole for the cable, and double sided tape sticks it to the plastic. Removable with some patience too.

 

[ichie123]

Where/ how is everyone mounting their bass knob? I am looking for a mounting solution without drilling any holes in the plastic of the dash.

I popped my cigerette lighter plug out and my knob fits where it was. I don’t use anything that requires that plug

 

[Ragstrom]

Was anybody able to confirm the speaker wiring in the rear speakers?

I'm assuming it's the two twisted pairs:
Blue/White + Yellow/Green
Brown/Blue + Grey/Brown

Thought I'd ask before tapping them and testing with a multi meter.

Edit:
I went ahead and installed my sub. In case anyone else comes across this in the future, here's my results:
Blue-White = Left speaker +
Yellow-Green = Left speaker -

Brown-Blue = Right speaker +
Gray-Brown = Right speaker -

I used a 9V battery to try and determine the polarity, so if this is incorrect feel free to correct me. Either way, that is how I have it wired into my line output converter and into the amp. Sub seems to be working without issue.

I just did mine and have the same wiring as this. 2025 GT Coupe 9 speaker non B&O, built March 2025. I pulled the rear shelf off to check exactly what was running to the speakers.

Wanted to share in case any one else is adding a subwoofer.

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