Admiral 20x122 - need help finding speaker

[David Roper]

Radio Daze carries Hammond chokes and there are two available that would work:

193H is a 5 henry choke in an enclosed case; 157R is a 2 henry choke with an open bracket mount. Neither costs less than 20 nor more than 30 dollars.

ETA: It probably would be helpful to link you to this schematic assuming it is the one for your set.

[dano]

Thanks! One speaker that I thought might work looks to only have a 7 or 8 ohm resistance on the field (not voice coil), I suspect it's just shorted. I'll turn up a perminant magnet speaker for now, before I go any further I'll test the picture tube and make sure I'm not putting money into something I can't get working Thanks again, this is a huge help!

[wa2ise]

Originally Posted by David Roper

this schematic assuming it is the one for your set.

If that is the correct schematic, the speaker is a permanent magnet type, and you'd need an audio output transformer 4K primary to a secondary that would match the speaker you plan to use.

The filter choke specs out to be 2.5H and 200ma.