[Hallicrafters] speaker for SX-25

[John.Bartlett at sealedair.com]

Hello;

I've recently bought an SX-25 Super Defiant.  It calls for a speaker of
either 500 or 5000 ohms, such as the PM-23.

Can anyone tell me what other speakers might work with this unit?  Most of
the Hallicrafters speakers sell (at least on e-bay) for more than I paid
for the receiver.

Thanks,

John