Jonnyspin

Yep, I put a jl 600 watt / 6 channel amp in and connected all the Bose speakers to it apart from the stupid centre dash one. Was a long time ago though (had the car since new) and involved a bit of soldering and a couple of big resistors. 
the thread must be on here somewhere. 
 

it all still works and sounds better than the original bose amp imho 🙂

And I can’t help as I bypassed the Bose amp and used a better one

4 years ago, I was in a similar position and considered a hybrid Cayenne over a diesel one because it seemed like an interesting option. My reasoning was down to experience that my Boxster has cost very little over the 15 years of ownership and is clearly exceptionally well built.
There were a few around at good prices and some intriguing specifications (a metallic yellow one with beige leather never seemed to sell ) Problem is that I don’t think they were that economical. And I was a bit scared of the costs if anything did need attention.

In the end I bought a SQ5 (I figured Audi would be similar to Porsche build quality, but the diesel would give better mileage than either hybrid or diesel Cayenne) ...and then I remapped it to make it a bit faster.
 

If you get stuck... they're  50p from Maplin, depending of course on whether you have a local branch

Enjoy this car, Paul O.

In my early days of Boxsterownership. when I still went to the OPC for servicing, I had a series of 3.2 Cayennes as loan cars, and lover them. The only negative, apart from the image at that time, which I believe has softened, was the horrendous thirst. That's why I couldn't consider one as an everyday car - I 'need' 30mpg. Hence the SQ5 working for my needs.

is the diode the right way around? just an idea

maybe take a photo

Fitted today. Thx for the pdf.

some much more random notes here of a similar install, but with BOSE:

http://www.BoXa.net/forum/index.php?showtopic=44096&hl=amplifier#entry520045