[Boatanchors] R-390 Speaker

[carolew]

I'm thinking of buying an R-390 and here are some very basic questions:

1. What type of speaker did the R-390 use as original equipment?

2. What is the output impedance of an R-390? I'm thinking of using a
non-original speaker and want to get the impedance to match as closely as
possible.

3. What kind of connector will I need to attach the speaker to the set?

4. What is a source for Bristol wrenches?

As always, thanks for your help.

Joe Connor