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Acoustic Image Original Coda, model 310AA - coax tweeter issue

Sep 17, 2023
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I just picked up the amp in the subject header from a fellow TBer; good guy, and thank you. It sounded great when we demo'd it, and the price was good.

Upon getting it home, cleaning it up, and going through the manual, the manual made mention of an on/off switch for the tweeter, located inside the front speaker grille. The grille is only held on with friction, and came out without a problem. Unfortunately, the tweeter was just floating in space rather than mounted on the spanning arm. The switch itself is dirty, but after playing with it a while I can confirm that the tweeter does do some tweeting. However, I'm not sure how it was originally mounted. In the pics below, you can see a small arc of plastic that fell out when I removed the grille, but I can't tell where it came from.

Soo.. a long shot, but does anyone know how this driver was originally mounted? The center of the bracket is slotted, like a "C," but i don't see any kind of clamping device. The mounting surfaces are sticky/gummy, like an adhesive had been used.

Also... Is there a source for the correct replacement tweeter and any missing or broken mounting parts (if any)?

Anyone own the same model that would be willing to snap a pic of an undamaged mounted tweeter?

Thanks in advance for any help... I know that, really, this driver isn't exactly essential (hence the included bypass switch), but I like to have stuff work the way it was meant to if feasible.

AITweet.jpg
AITweetClose.jpg
 
Mark Gollihur may be able to help or make suggestions, they were an AI dealer (Gollihur Music).
Thanks. After looking at it further, that small arc thing wasn't hard plastic.. more like a semi-rigid foam.. and I think it was used as an interface between the tweeter housing and the metal bracket, glued to the back of the tweeter, then in turn glued to the metal spanning piece across the mid driver.

I've redone the surrounds on quite a few speakers and had some leftover special magic speaker surround glue lying around. I cleaned up all the residue with acetone, glued the foam arc to the tweeter, then that assembly to the span, clamped for an hour, then played on it for a while. So far, so good. I think that may have done it. Good to know re/ Mark, though... thank you!
 
Thought i better clarify my "current" business comment - did not AT ALL mean to imply his past business was not good - just meant that his Gollihur Music shop is alive and well and a great place to do business with...as it has always been. Apology for any misunderstanding i may have caused.

Mark is a good guy with a good [current] business. He was an AI dealer for several decades i think, and very close with the factory folks.
 
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