[Boatanchors] Audio matching xformer

[Barrie Smith]

Hello, All:

I usually listen to my SX-73 using an old and tired Hallicrafters 600 ohm speaker, because 600 ohms is the audio output on that receiver.

I'd like to try a better quality speaker, but the speakers I have are all 8 ohm.

I have a 70 volt, 10 watt line-transformer, but I can't make sense of the schematic.

The secondary is marked 4, 8 and 16 ohms, so that's FB.

The primary is marked in watts: Common, 10, 5, 2.5, 1.25 and .62 watts.

I would think that if this transformer could match 600 ohms to 8 ohms the primary would be marked in ohms.

I do not want to damage the receiver, so does anyone have an idea what's going on?

73,
Barrie, W7ALW, DN36au,
QRV 6M, 432 & 1296 EME