murray Posted March 9, 2009 Share Posted March 9, 2009 Hi: I have retrieved a BR-9 amp from the basement and want to proceed toward getting it back to original condition. The field-coil/electrodynamic speaker had an open voice coil and had been put away for reconing someday and now has a modern PM (Permanent Magnet) speaker, a series resistor and I assume a filter choke. I haven't spent alot of time looking closely at the wiring yet, but am puzzled by a couple things... 1) what looks like a below-chassis mounted choke, with a number stamped on top...I only see two wires, so conclude it can't be a phase-splitter drive transformer. 2) The PM speaker has a transformer screwed to it's frame, but I don't know if it's original. Does anyone have any pics of a stock BR-9 interior so I can tell what may have been changed? I haven't found the FC speaker yet to see if it has a transformer on it - it's in a box in a safe place, more layers down. If no pics, I'll take some of mine next time I'm inside it and post those for feedback that way. Thank you! Murray Link to comment Share on other sites More sharing options...
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