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I connected a small 8 ohm external speaker in place of the internal speaker. It sounded much better, mainly better frequency response. I was thinking of using a 4 ohm 6" speaker with a frequency response of around 100Hz to 15kHz. That should give me decent sound without much expense.
Since I don't have an inductance meter, does anyone know the inductance of the field coil on the RL-70H-6 RCA loudspeaker? I'll get a new Hammond choke with inductance and current capability the same or close to the old one and use a resistor to match up the resistance of the old one to 1060 ohms. Does that sound right?
Thanks.
Jonathan
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