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In the chain used to reproduce this..................
Recorded FM signal from a Dynalab MD-90 with upgraded RF coil to a Revox A77mkIV at 7.5 ips.
Played back from same deck through a McIntosh MA6900 (200 wpc) and speakers made by............
ME.
Basically,
2.5-way, 2nd order crossed over at (IIRC) ~1800hz and 1st order at 15,000hz
15 inch Dayton woofer
1" PRV Polyamide Compression driver mounted to Dayton Audio waveguide.
Fostex Supertweeter.
It's a 2.5 way because the x-over to the supertweeter is high pass only. The waveguide starts to roll off naturally at around 15khz.
The woofers are in a 3 cu.ft . trapezoid Baltic Birch box with 2-4"x 10" flared rear vented ports.
Audyn and Dayton 1% caps used. Jantzen air coils.
I should be getting useful output down to ~30hz through the mains.
The sub is a Dayton Titanic III 15" driven with a 500 watt plate amp. Useful output down to 18hz.
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"When the lie is so big and the fog so thick, the Republican trick can play out again....."-------Frank Zappa
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