Ahh, the quandary of stereos and speakers in our LBCs. After 30+ years in Minis, I know it only too well.
Here's how I have dealt with it in the Midget. Keep in mind, it's my daily driver, and I'm not shy about modifications if it makes my driving more comfortable.
Oh...and I know, my car is filthy. I saw this thread this morning, and thought I'd just shoot a few quick pics for you guys. And I did not clean a darn thing first. :blush:
Overall view:
The car had a pair of speakers mounted in the rear wall, as is usual. I decided to leave that in place (although I did upgrade the speakers themselves.)
I then added the second set below them. I simply wanted a bit more 'ummph' when the top is down. These are mounted in a false panel. No cutting of the car was done here. (Not that I'm overly shy about doing that, mind you...):
You will notice the seats do not match. I had installed Miata chairs, but mine was killing my back. So I removed it, and installed a Kirkey racing seat, and then built it to fit my bad back. I had got used to having the headrest speakers, so I took advantage of the racing seatbelt slot in the Kirkey to mount a couple small speakers:
As has been mentioned, using all these speakers can be too much for a little car stereo. In this case, I've wired the four rear speakers directly from my car stereo, which it is designed to do. Due to the dimensions of my stereo, I mounted the console at a more inclined angle, and installed the stereo where a set of small speakers had previously been. This allows enough depth for the length of my stereo. The console is the stock item; I covered it with a wood facia, just because:
For the headrest speakers, I'm running two very small amplifiers, one per seat. These amps are made for motorcycle installations. I have mounted them where the car stereo usually resides, and designed the facia to hide them:
Yes, the facia is held in place with velcro. I was not sure I would like the wood, and wanted an easy way out...
Anyway, the system sounds good, especially with the top up, but it's fine top-down-at-speed as well.
My solution won't serve for everyone, but perhaps it'll give some of you food for thought.
Now I'm off to work. I'll be listening to Zeppelin this morning. <span style="font-style: italic">Houses of the Holy</span>, if you're curious...