Joined: July 24th, 2015, 4:17 pm
Posts: 1786
Location: Parkville, Maryland
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Actually for purposes of accuracy -- the tweeter panels and the woofer panels share the same bias supply. However, the center treble panels pick up their required bias of 1,500-volts from nearly the beginning of the bias supply-voltage multiplier chain and the woofer panels get their 6,000-volts bias voltage at the end of the voltage multiplier.
Peter Walker "killed two birds" with one bias supply. Simple yet sweet.
The same goes with the audio transformer. Different winding's for the tweeters and woofers to perform as an inductor-based crossover with a couple of high-voltage rated capacitors to dial it in. Also sweet.
Paul had the stones to do a full disassembly and restore the speakers to like-new performance. With his wood-working skills he can stack two pairs, add ribbon HF tweeters and together with his Janus sub-woofers he will have a DIY Mark Levinson HQD system. For htose that do not know what HQD satands for it is Hartley - Decca - Quad.
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Walt
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