Hello, working on the preservation of the 1973.5 Aubergine Porsche. When we went to replace the dashboard, we noticed there was no center speaker, leaving the car with just two door speakers. Is that period correct for the 911, two door speakers or just one grill speaker. Never all three ?
Thanks
Rob
What’s the original radio to the car? Frankfurt Stereo or Mono? Other? I’ve seen a stereo option with parcel shelf mounted speakers but, I don’t know about in the doors.
Do you have a COA with options listed?
Michael
“Electricity is really just organized lightning”
-Dusty 70S Coupe
-S Registry #586
Stereo speakers not really integral for early 911 — typically added as option or aftermarket. Provision for singer speaker under the removable cover centre of dash. If don’t have oars manual take a look at PET diagram for relevant section. Because 911 of that era never designed for stereo I’ve seen additional speakers added in all manner of places in 73 cars doorcard, door pockets, under dash facing down to floor, sides of rear quarter panel and box singular or pair back shelf etc etc . My understanding is speakers in doors weren't designed to integrate into 911 until the impact bumper facelift so rather a hodge podge uk tk 73 depending on installer — unlikely to be good positioning for sound quality. Was even a rare shelf that had speakers — possibly the nearest thing to a stereo solution being designed for pre-impact bumper. The wiring recommendations on for example Blaupunkt in 72/3 are interesting to use three or a single front and single rear today’s conventional wisdom on imaging.
As you might know 73.5 is not an official model designation it’s just a colloquial term used to refer to a 911 variant offered in a (few) market(s) part way though model year 73 so perhaps not so relevant in determining the audio equipment as tbe CoA or similar. Except that cars dubbed 73.5 are likely to have had the American specification radio or radio/tape head units fitted at factory or aftermarket. The obvious visual clues without leaving seat being the 108 range on dial together with AM FM push buttons (rather than 104 dial range along with some combination of LMKU) .
I suggest search for and read threads such as lengthy one tilted someting like “show me original radios in dash” that occasional stray to cover period speakers etc
Last edited by 911MRP; 02-17-2025 at 10:10 AM.
I have the CoA which does not list a radio type. The car has a Blaupunkt Aspen am/fm cassette player. Wondering if the car was radio delete and these were after market options? Dealer installed? I have the original bill of sale from 1973 that says the car came with am/fm stereo. Thanks for your help. I have an older Frankfort to switch in eventually. I will do a little more digging with the paperwork. I have the car only for 8 months.
Last edited by RobGould88; 02-17-2025 at 10:35 AM.
The factory only listed very a few as options for USA market in 73
and Aspen wasn’t M option I recall seeing on that list. I’d have to check my files but
can’t recall Aspen even being in the Blaupunkt whole all Region lineup in 73 -
don’t know them. I do have lots of paper period references on 73 radios . Frankfurts are the default for anyone refitting so can be a bit of an inspired choice as everyone seem to fit it. If have one however the mid-range offering it’s a safe bet if no radio model specified in CoA or other at new info . For car of that price likely radio would be fitted at dealer for a that variant which likely used a street car. I’d suspect the Aspen is a much later year so a possibly a replacement to one in the 73 document.
Steve
Last edited by 911MRP; 02-17-2025 at 11:36 AM.
When you pulled the dash was a piece of black interior vinyl glued onto the metal dash where the speaker would normally be. If the car came from the factory without a radio, it would have this piece of vinyl glued over that opening.....this was done to prevent air from coming into the cabin through the speaker grill. If the car did not have a radio from the factory, it was still delivered /assembled with an antenna.
There was no vinyl over the speaker opening. Looking at the paperwork, I am thinking the dealer (Kendon Porsche) converted the car to stereo with door speakers at the dealer before delivery. The car was sold originally with am/fm stereo. The original option list on the CoA does not mention anything about the audio. The center speaker is currently missing, so I do not know if it was removed at the time or someway along the way.
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