Unusual output transformer Triad

[quayhog]

I've had this Triad S-46A output transformer that I'd like to figure out how to use, if possible. I found it listed in a 1960 Triad catalog but only on the price list. $32.00

The schematic on the bell looks like a choke, it's missing the usual primary:secondary listing, it seems to have just a secondary. Anyone ever seen one before? Anyone know if it's useful?

 

[rayma]

I've had this Triad S-46A output transformer that I'd like to figure out how to use, if possible.
The schematic on the bell looks like a choke, it's missing the usual primary:secondary listing,
it seems to have just a secondary.

It's a 20W transformer for installing in a speaker, for an installation with multi-speakers and a long wiring run.
It connects to an amp with a high impedance secondary winding, and steps down that impedance to the low
impedance of the speaker.

 

[Tom Bavis]

It's an autotransformer - secondary is a tap on a single winding. You could use it in parafeed, or in a cathode follower output stage

 

[quayhog]

Do any of you have a drawing on how it would be wired? I'm trying to see if it has any use, not sure I can picture a para feed or CF circuit.

 

[rayma]

Do any of you have a drawing on how it would be wired? I'm trying to see if it has any use,
not sure I can picture a para feed or CF circuit.

Don't have any DC through the winding under any circumstances. Input is to desired high impedance tap and common,
output is to 4/8/16 Ohms and common.

 

[quayhog]

If anyone has a use for this transformer I'd give it to you for postage reimbursement. I'm now 63, it's been on my shelf for twenty years. I'd hate to use it for a door stop if someone wants it.