I'm pondering how to make an A-K Series "E" speaker work with an A-K 55 radio I'm restoring. Right now, I have the A-K 55 hooked to the speaker in my A-K 80. It works, but I think the speaker field coil impedance is wrong. In the A-K 80, the field coil impedance is 2K ohms. In the A-K 55, it's supposed to be 1.1K ohms. Since the Series E speaker is a two wire arrangement (and I assume I would connect it to the secondary of the output transformer), if I bypass the field coil with a 1.1K 10 watt resistor, will it work?
Or would it be better to use a modern speaker (around 10 watts, no field coil) and bypass the field coil with the 1.1K resistor?
Any wisdom you can provide would be greatly appreciated.

Jeff

A series "E" speaker won't work on a Model 55 unless you use an output transformer and a replacement field.

Series "E" are high impedance speakers. Model 55 has a built in output transformer and uses a low impedance speaker. A modern PM type will work. You can use a 1,000 ohm 10 watt resistor in place of the field without other changes.

Norm

:Hi,
:
:I'm pondering how to make an A-K Series "E" speaker work with an A-K 55 radio I'm restoring. Right now, I have the A-K 55 hooked to the speaker in my A-K 80. It works, but I think the speaker field coil impedance is wrong. In the A-K 80, the field coil impedance is 2K ohms. In the A-K 55, it's supposed to be 1.1K ohms. Since the Series E speaker is a two wire arrangement (and I assume I would connect it to the secondary of the output transformer), if I bypass the field coil with a 1.1K 10 watt resistor, will it work?
:Or would it be better to use a modern speaker (around 10 watts, no field coil) and bypass the field coil with the 1.1K resistor?
:Any wisdom you can provide would be greatly appreciated.
:
:Jeff