Thanks; so it must be possible to power the subwoofer by a third-party amplifier then(?).
Can the subwoofer enclosure be opened?
...or if the Bose kit includes a amp with active crossover that also cut low freq bass from the door speakers allowing you to play louder.
Is the Bose kit installed same place as the standard amp; below right hand seat?
That sounds like a good solution. I have installed a 6 channel amp and Gladen custom speakers to my BM, I quite enjoy doing audio installs.Today I have a Pioneer DAB+/Bluetooth headunit wired to the Blaupunkt amp below the righthand seat.
To make it simple for myself, I was just thinking of pulling the signal&trigger from the headunit to the boot, where I install a quality amplifier wired to the Bose sub (back the good old days I ran Phoenix Gold ZX and Boston Acoustics Pro)