How-To: Dash Speaker upgrade (well.. what I did)
 

Hi,
I just upgraded the dash speaker in a 1970 911T (actually I am in the process of redo-ing the whole front electrics - last guy did his wiring a la hatchet! I wanted period looking radio - but modern functionality - but couldn't justify a Becker Mexico. So I chose a RetroSound - Model One. And when researching speaker options for the dash... not alot to directly replace standard.. and I wanted respectable sound.

So.. I made the following - easy to do without heavy tooling!
I cut a piece of 150x220 alu thread plate (about 2mm thick or so). Then cut out two 95mm diameter holes with a jigsaw with 105mm centres (I tried a hole saw for plasterboard - not a good idea!) and filed them clean enough.
Then I bent the each of the sides (about 20mm) by clamping between pieces of wood and gently hammering until at 90 degrees.
Then I drilled the mounting holes that suited the speakers (here Focal Polyglass 100CVX - plenty of room for the depth - just awkward fitting. Thankfully I have no ventilation unit at the moment because of rewiring the front.

To mount the speakers in the car, the between centres for the mount holes in the dash are: 200mm x 80mm

Result:
http://forums.pelicanparts.com/uploa...1269796054.jpg

http://forums.pelicanparts.com/uploa...1269796228.jpg

Just need to trim those bolts I think.

http://forums.pelicanparts.com/uploa...1269796468.jpg

Ciao,
brd

A good adaptation , and for sure a good sound with Focal !!!

nice job...do you know if the wipers when put into motion and/or any of the duct work will be blocked now??
Bob

Wipers no problem. I'm fitting the ventilation system next week as part of the re-wiring project. I expecting (hoping!) that it will be fine. I'll keep you posted :)
(Being in a 911T means there are no dash vents to the right of the clock to have to deal with of course...)

brd.

instead of trimming the bolts just turn them around

Nice work. Looks more substantial than what I bought on Evil Bay which does the same but still sounds good: Stereo Radio Dash Speaker Upgrade Porsche 911 912 T E S : eBay Motors (item 230454796279 end time Apr-05-10 22:25:28 PDT)

Thanks. Yeah... I saw that one too and was wondering what the build quality was like.
I decided to make my own to be sure as I wanted a sturdy enough mount for the speakers to help with the bass. The speakers themselves are also quite heavy and I wanted to not have mount issues either due to the Bilstein sport suspension.

brd.

UPDATE: Rewiring completed of the front half of the car with everything installed - so no interference with using these speakers and any other components (previous question)
(Just don't want to have to go in and change them now! :)