The trick to getting the old speakers off is to first pop off the
door panel (after removing window crank, etc.)  Then, unscrew the
inner and out plastic surfaces of the speakers from each other (i.e.,
by twisting each side counterclockwise).

I solved the speaker replacement problem and kept everything
Blaupunkt as follows:

(1)  In the front doors, I mounted Blaupunkt "separates": a small
dome tweeter and a 5" woofer.  I carefully removed the old front
speakers from their housings and clipped out the inner part of the
plastic grille, into which I was able to mount the tweeters.  This
leaves plenty of room for the window crank.  I placed the woofers
lower in the door panel.  (You could probably fit a 6" speaker there
with a little cutting & filing.)

(2)  In the A/C cabinet, I mounted 3.5" Blaupunkt 2-way speakers,
which fit just fine w/ no modifications required.

My "head" unit (cassette/AM/FM) drives the front speakers; I added a
separate amp under the driver's seat for the rears.

I did all of this about 5 yrs ago, so have not given specific speaker
part references.   (I got all of the components from Crutchfield.)
Nevertheless, you should be able to work a similar set-up with
today's counterparts.

>I just put a new CD player in Zippy (85 Westy), and heard just how
>bad my stock "stereo Prep" speakers from blaupunkt sound.  These are
>the 3.5 inch ones in the brown plastic housing in the doors and air
>conditioning cabinet.  My local VW dealer has no info on
>replacement, and nothing in the local stereo shops (radio Shack,
>best Buy, Circuit City) can flush mount shallow enough for the
>window crank to pass.
>
>I'm trying to dig the old speaker out of its enclosure, but that's tough.
>
>What have the rest of you done?
>
>BTW, I tried to search the archives for the last week or so, but
>have been unable to get any response on anything.
>
>TIA,
>Peter &Zippy
>
>Please cc to vw85westy@aol.com

--
Ray Reinhard
232 Navigator Drive
Scotts Valley, CA 95066
(831) 438-5198