I visited GPMINI today at Superior Systems, a custom audio shop in Peabody, to see how the creation of a speaker box was going, and to decide how it should be finished; what we have so far is a box which extends across the width of the car, positioned just in front of and below the GPs luggage bar – it’s front edge lines up with the front edge of the rear half of the car (where the rear seats would finish in a normal MINI).
The box will hold three 6″ JL Audio subwoofers, firing towards the back of the car; the DPSM 6×9 speakers, which normally fit in the MINIs rear speaker positions, will also be mounted, just behind the front seats and firing forward:
The DPSM speakers are of course driven by the DPSM amplifier; the subwoofers will be driven by an amplifier mounted in one half of the GPs rear storage area …
I originally thought about having the box painted to finish it, perhaps with some sort of design on it – but seeing the box in GPMINI made it clear that painting it wouldn’t work well, unless I did lots of additional custom paintwork both inside and perhaps also outside the car.
So the new plan will be to cover the box, perhaps in a “vinyl” material (similar to MINIs leatherette seating finish) either black or, if we can find an appropriate color material, in a finish which matches the red panels in the back of the GP.
More in a couple of weeks …
M&I / GBMINI 
nicely done Ian, will Superior Systems be able to produce more of these for other GP owners? Are you still able to open the cargo cover?
George, no idea if they can make a second – I’ll ask.
I can lift up the rear most piece of the storage area, but the front “Z fold” part is covered
Not sure why one would need that much stuff to listen to music in a car, a noisy car to boot, but you seem to love doing ONE OFF MINI’s and music so have fun. Are you going to compete in one of those music blaster contests that I see at Tuner Events like Hot Import Nights? Have any FUNK music? P-Funk, Parliment, ConFunkShun, Funk-A-Delics, George Clinton?…. =;¬)