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![]() "frank" wrote in message ... Hello Ed! Ed Engelken wrote: The usual fix is to use a 10-watt, 70-volt line to voice coil transformer. The 10-watt tap on a 70-volt line to voice coil transformer will provide a decent match to a 500/600 ohm output. In a pinch, an ordinary filament transformer will do. Get a transformer with a 120-volt primary and 12.6-volt secondary and connect the 120- volt winding to the receiver and the 12.6-volt winding to the speaker and you are done! --Ed thank you for the suggestion, I do have a spare 120V primary transformer lying around (I live in a 240V country, so no use for it). I could also wire my own transformer, but that would take some time. I don't know what a line to voice coil transformer is, can you explain better this part? Thanks a lot. Best regards Frank IZ8DWF I've used filament transformers many times and they work well. While the fidelity may not be as good as a special purpose audio transformer I doubt you will be able to tell the difference in this application. The Hammarlund Super-Pro is a very fine receiver and will repay your work in restoring it. -- -- Richard Knoppow Los Angeles WB6KBL |
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