I bought a pair of CD9 from a private seller on letgo that had an unfortunate collision with an unknown object while in the care of its previous owner. One speaker was perfect the other had a tweeter with a missing dust cap and its left wire severed. The midrange had a wire barely hanging on neither had a signal.
I proceeded to search for drivers and quickly learned that most every driver is the same through most models starting with the One. The Nine, which my CD9 is based on differs in crossover and bi amp-ability but aside from the 10" woofer in the 9, the midrange and the tweeters look identical to one through six, naked without any grilles, all the grilles depend on an exterior grill with these convex delicate paper drivers.
The "big auction site" as they say, had many drivers, most every tweeter and midrange in 2019 cost $125-175 each.
I finally found a guy who had a few hundred new old stock direct from the original Allison company in MA, boxed in formed stock Styrofoam that were designated for mobile auto installations. Theae were the same exact drivers as mine in the CD9 but with metal grilles attached to protect them.
Same magnet, same nipple shaped tweeter with the leads running to the edges, same midrange. Also more importantly from the supplied spec sheet, identical magnet weight, frequency range and power handling @ 4ohms
I got the tweeters first then ordered the midrange, both in pairs, both sets cost less than $180 a pair. He may have some left.
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