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LS-3 speaker
Antonio Vernucci wrote:
I would like to restore the original connections of an LS-3 army louspeaker that I had modified many years ago, but I am unable to find the connection diagram on google. Inside the speaker there is a high-to-low impedance transformer, but I am not sure whether both the low- and the high-impedance connections were brought to the exterior. Also, I am not sure on whether one of both transformer windings were connected to ground. Can any one please let me know the original connections of the input three-contact jack? Thanks & 73 Tony I0JX The connector used is the 3-pin military mic connector, same as on the front panel of the BC-312 and '342. The high impedance side (only) of the transformer goes to the tip and ground. The low impedance speaker winding goes to the voice coil taps, only. I have come across a few LS-3's that used tip and ring but don't believe that's correct. Reason is, the LS-3 was designed for the above receivers and BC-312 receiver (only) has DC (filament) voltage on the ring connection. WA5CAB may have add'l info as he sells new LS-3s. Hope this assists you. de K3HVG -- Posted Via Newsfeeds.com Premium Usenet Newsgroup Service ---------------------------------------------------------- http://www.Newsfeeds.com |
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