I'm working on an old crosley rfl 75. The two wire speaker output hooks to an output from a transformer, and a 90v power terminal. I can't figure out why it's wired to a hot lead. Are the leads supposed to hook up to a tranformer on the speaker? I am using an old horn type and the inputs go straight to the voice coil. Please help!

Many of the old horn type speakers had a high resistance voice coil. Quite often it was in the order of 1000-2000 ohms. They typically did feed the 90 volt B+ through the speaker to the plate of the audio output tube. There are also some horn speakers that had a matching transformer. Measure the resistance of your speaker.

MRO

:I'm working on an old crosley rfl 75. The two wire speaker output hooks to an output from a transformer, and a 90v power terminal. I can't figure out why it's wired to a hot lead. Are the leads supposed to hook up to a tranformer on the speaker? I am using an old horn type and the inputs go straight to the voice coil. Please help!

Mark, what Mark says is correct. But can you point us to a schematic for this set?

Is this a push-pull output? Otherwise, I'm unsure why there is a transformer between the final audio and the speaker terminals.

::I'm working on an old crosley rfl 75. The two wire speaker output hooks to an output from a transformer, and a 90v power terminal. I can't figure out why it's wired to a hot lead. Are the leads supposed to hook up to a tranformer on the speaker? I am using an old horn type and the inputs go straight to the voice coil. Please help!

Hi

Crosley RFL75 does use a high impedance speaker. Here is the circuit.

http://www.nostalgiaair.org/PagesByModel/694/M0039694.pdf

Norm

:Mark, what Mark says is correct. But can you point us to a schematic for this set?
:
:Is this a push-pull output? Otherwise, I'm unsure why there is a transformer between the final audio and the speaker terminals.
:
:::I'm working on an old crosley rfl 75. The two wire speaker output hooks to an output from a transformer, and a 90v power terminal. I can't figure out why it's wired to a hot lead. Are the leads supposed to hook up to a tranformer on the speaker? I am using an old horn type and the inputs go straight to the voice coil. Please help!

:Mark, what Mark says is correct. But can you point us to a schematic for this set?
:
:Is this a push-pull output? Otherwise, I'm unsure why there is a transformer between the final audio and the speaker terminals.
:
:::I'm working on an old crosley rfl 75. The two wire speaker output hooks to an output from a transformer, and a 90v power terminal. I can't figure out why it's wired to a hot lead. Are the leads supposed to hook up to a tranformer on the speaker? I am using an old horn type and the inputs go straight to the voice coil. Please help!

I got the schematic right here from N air.
Thanx