RL-70H-6 Replacement

[Jonathan]

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

[Tom Bavis]

Inductance doesn't matter much - at worst you can increase the capacitor AFTER the choke to improve filtering. If a 10H 100 ma choke is too big, get a 5 or 8H one - and at least 80 mA rating - and add resistance as needed - make it a 10W resistor.