Allison Midrange and tweeters

[Chris Barbot]

I've heard that you can use the mids and tweeters regardless of model between the Allison Models 1, 2 and 3.

How about other models?  Could I use the mids and tweeters from a CD-8 in an Allison 2?

 

Thanks for your thoughts and suggestions!

Chris

[newandold]

Hi Chris,

The Allison dome midrange can be used in A1, A2, A3, A8,Cd8,A9 And IC20 (I think I got All of them!)

Depending upon the vintage, some modifications are needed to accommodate the leads. That depends on internal or external with those old brass pins.

[newandold]

On 6/22/2021 at 5:05 PM, Chris Barbot said:

I've heard that you can use the mids and tweeters regardless of model between the Allison Models 1, 2 and 3.

How about other models?  Could I use the mids and tweeters from a CD-8 in an Allison 2?

 

Thanks for your thoughts and suggestions!

Chris

I wanted to share another story regarding Allison midranges and tweeters….then realized I left the second part of your question unanswered.

 I suppose 14 months is better late than never LOL.

The answer to your specific question is yes (regarding the tweeters). All those models you referred to are 3 way systems. The midrange for those are all essentially identical (mechanically) and are ferrofluid cooled.

The tweeters in those units use silicone damping material. Smaller two way systems, such as the A4, use tweeters that look identical, but use the ferrofluid cooling material. Swapping those is not advisable, but if nothings left out there, you could get away with using the two way tweeter in a 3way system.