67 AC speaker

[Bill M.]

Hello everyone. I am going to attempt to change my AC speaker again this winter this time i am going to remove my cluster. I have 4 mid year speakers that are not from C 60 car. Do I have to use a C 60 speaker or can I use a standard speaker? I would not like to have the car apart while i am waiting for the rebuild. Are the speakers worth re-building and selling? Can anyone recommend a rebuilder.
Bill

[Leif A.]

Re: 67 AC speaker

Bill,
I borrowed this picture from ProVette on the CF. You can clearly see the difference in the height of an A/C speaker.


These folks make the best reproduction speaker for our C2. Scroll about half-way down the page for the Corvette 6x9 speaker.

http://www.turnswitch.com/speakers.htm

[Harry S.]

Re: 67 AC speaker

I've been through the 63 to 67 AIM's and can not find any reference to the lower profile 7282256 speaker. All is see is the 7282156 speaker for all radio equipped cars 63 to 67. I'm researching when the 2256 was introduced. I do believe it was an over the counter Service Replacement.

[Bill M.]

Re: 67 AC speaker

Wow thanks guys that looks like a good inch in height. The space between the diffuser is miniscule a shallower speaker would make sense. Now i need to find a rebuilder.

[Mark F.]

Re: 67 AC speaker

I've been through the 63 to 67 AIM's and can not find any reference to the lower profile 7282256 speaker. All is see is the 7282156 speaker for all radio equipped cars 63 to 67. I'm researching when the 2256 was introduced. I do believe it was an over the counter Service Replacement.

Hi Harry,

Somewhere in the cobwebs of my mind I believe the AIM only shows differences in assembly techniques or requirements if they vary from other instructions outlined.

So, if an A/C speaker is assembled (installed) exactly the same as a "regular" radio-optioned (non-A/C) speaker, it would not appear separately in the AIM because there's nothing different to instruct the line worker on how to install an A/C speaker unit with a different part # and configuration, but installation is the same as a "STD" radio unit (?)

All that said, I guess the infamous never-to-be seen Broadcast sheets would identify the different part number for the line worker. The assembly station where speakers are installed would have both part numbers available (A/C units obviously in far less quantities then STD).

And I'll bet there's a few "regular" radio-optioned (non-A/C) cars out there with A/C speakers right from the factory...assembly plant work can be mind-boggling boring if you work the same position for long periods of time.

All speculation on my part...and maybe some "AIM experts" out there can correct me if my memory is faulty.

Does any of that make sense ?

[Harry S.]

Re: 67 AC speaker

I found this, he was a wealth of knowledge...

A note from John Hinckley.....

As with anything else in the Assembly Manual, the U69 (radio) section assumes that the rest of the car is a "base car" with no other options. If you look at the listing of ECL codes for U69 (see Noland's book, '67 U69 option section), note that there are two unique ECL codes for both WITH and WITHOUT C60; if you had access to the Engineering Parts List (which we don't) and checked the option parts list for both of those ECL codes, you'd find that the one for WITHOUT C60 has the speaker part number shown in the A.I.M., and the listing for the WITH C60 ECL code shows the 7282256 speaker part number instead.

Alternate parts used with other options are seldom shown in the A.I.M. option sections; normally there's a "non-illustrated parts" sheet that refers you to the "Engineering Parts List" for alternate part numbers.

[Mark F.]

Re: 67 AC speaker

Good deal, Harry, and thanks...

I was close, so maybe my memory is better than I think

[Tim L.]

Re: 67 AC speaker

When I replaced my speaker (a/c car) I did it without removing the gage cluster. Of course, the side panels, radio, clock and glove box and a magic act of twisting. Wasn't a fun job! I had my low-profile speaker rebuilt by a local antique radio repair guy here in town. I do have a rebuilt low-profile speaker.
Good luck.

[Bill M.]

[Joe L.]

Re: 67 AC speaker

I found this, he was a wealth of knowledge...

A note from John Hinckley.....

As with anything else in the Assembly Manual, the U69 (radio) section assumes that the rest of the car is a "base car" with no other options. If you look at the listing of ECL codes for U69 (see Noland's book, '67 U69 option section), note that there are two unique ECL codes for both WITH and WITHOUT C60; if you had access to the Engineering Parts List (which we don't) and checked the option parts list for both of those ECL codes, you'd find that the one for WITHOUT C60 has the speaker part number shown in the A.I.M., and the listing for the WITH C60 ECL code shows the 7282256 speaker part number instead.

Alternate parts used with other options are seldom shown in the A.I.M. option sections; normally there's a "non-illustrated parts" sheet that refers you to the "Engineering Parts List" for alternate part numbers.

Harry------

Yes, the 7282156 and the 7282256 were released about the same time in 1962 (for the 1963 model year). However, only the 7282256 was available in SERVICE. I'm confident that GM considered that the 7282256, apparently used in PRODUCTION for 1963-67 C2 applications with C-60, could be used to SERVICE non-C-60 applications. Why it was not used in PRODUCTION for both applications is a mystery. It just does not seem like there would be a significant cost difference between the two speakers.

The 7282256 was discontinued without supersession in March, 1981.

[Harry S.]

Re: 67 AC speaker

Harry------

Yes, the 7282156 and the 7282256 were released about the same time in 1962 (for the 1963 model year). However, only the 7282256 was available in SERVICE. I'm confident that GM considered that the 7282256, apparently used in PRODUCTION for 1963-67 C2 applications with C-60, could be used to SERVICE non-C-60 applications. Why it was not used in PRODUCTION for both appltions is a mystery. It just does seem like there would be a significant cost difference between the two speakers.

The 7282256 was discontinued without supersession in March, 1981.

Joe, thank you. Enjoy the upcoming holiday season!