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Genesis Physics Speakers:
Model 320 Information

specifications - crossover schematic - order parts


photo/top - crossover schematic - order parts

Dimensions 34" x 18-1/2" x 10-1/2"
Finish walnut vinyl (oak veneer?)
Tweeter "H50B" 1" concave dome PRO 002 MG $73.00
Midrange "M100A 4 1/2" PRO 024 $40.00
Woofer "L200B" 8" (2) PRO 001 $79.00
Crossover 800 Hz, 3 kHz ACC 004 J $93.00
Sensitivity 90 dB, 1w at 1m
Frequency response 36 Hz to 20 kHz
Power 20 - 250 watts/ch
Impedance 4 ohms

Crossover schematic

photo/top - specifications - order parts

This is the crossover most likely to be found in production examples:

G320 crossover - factory schematic

I found this one in a pair in the field. The woofer crossover is slightly different, and the midrange would be a bit brighter:

G320 crossover - alternate

This version may have been used in some later production, but probably wasn't. It is very parsimonious with components - the woofers are simply direct-coupled, and one capacitor is doing double-duty as part of both the midrange and tweeter filters:

G320 crossover - minimal parts

This next one is interesting, in that the two woofers are wired in series, with the lower woofer being rolled off more sharply. The woofers are also wired backwards in the drawing. This crossover was probably never made:

G320 crossover - unreleased fantasy

Key to Crossover Symbols and Component Values (in a new window)

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