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the woofer is driven directly by the amp, the tweeter's HP is passive

with hand-wound tension-wrapped air coils, tonally-balanced low-microphony polycarbonate metalized films (Philips' yellow-blocks), and low L R's, OEM in the seventies. Each notch hand-tuned to critically damp each dome.

The mid-woofer was designed by Foster to be driven full-range, and with that tweeter @ first order with a trimmable-cap and a matching R. But the sphere guys found that an Fs trap really helped to get it all to gel. Though I'd love to try a ribbon at first order, and line them up with a trim cap.






Warmest

Timbo in Oz
The Skyptical Mensurer and Audio Scrounger

And gladly would he learn and gladly teach - Chaucer. ;-)!

'Still not saluting.'

http://www.theanalogdept.com/systems_gallery.htm


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  • the woofer is driven directly by the amp, the tweeter's HP is passive - Timbo in Oz 23:56:04 07/09/07 (0)

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