miscellaneous vintage driver pairs

[el seven]

Looking for some technical assistance identifying these drivers.

Many pairs, from 3" to 12" actually.

For example... 5.25 open back.

 

[el seven]

And they are all for sale so if something perks your interest, please speak up!

Old Altecs? Fostex?

 

[el seven]

Altec 421 prototype 16" soundstage driver?

 

[el seven]

I will be posting more when i take some additional pictures.

 

[gfederys]

Do I win?

EPI INVERTED DOME TWEETERS-PAIR-OHM TESTED-for M SERIES - eBay (item 290530641962 end time Mar-05-11 17:28:50 PST)

 

[Ohighway]

I believe the 5.25 open back might be CTS drivers. At least the 137 code would suggest it.

More Codes

 

[planet10]

The CTS drivers in post 1 probably came out of an EPI microTower (a certainty if related to the EPI tweeters in post 2). The JBLs in post 3 came in a number of variations. All the ones i've had thru here needed new surrounds.

dave

 

[el seven]

The CTS drivers in post 1 probably came out of an EPI microTower (a certainty if related to the EPI tweeters in post 2). The JBLs in post 3 came in a number of variations. All the ones i've had thru here needed new surrounds.

dave

Thanks dave! 3rd post i'm most certain is an Altec 421. I have another just like it but it has the white frame they used in mass production units.

Here's a massive mid-tweet. Massive motor / magnet structure.

 

[planet10]

From the EIA number those are Jensens.

dave