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Genesis Physics Speakers:
Model 320 Information

specifications - crossover schematic - order parts

Specifications

photo/top - crossover schematic - order parts

Dimensions34" x 18-1/2" x 10-1/2"
Finishwalnut vinyl (oak veneer?)
Tweeter: "H50B" 1" concave domePRO 002 MG$54.00
Midrange: "M100A 4 1/2"PRO 024$40.00
Woofer: 2 "L200B" 8"sPRO 001$59.00
Crossover: 800 Hz, 3 kHz
Sensitivity90 dB, 1w at 1m
Frequency response36 Hz to 20 kHz
Power20 - 250 watts/ch
Impedance4 ohms

Crossover schematic

photo/top - specifications - order parts

This is the crossover most likely to be found in production Genesis 320, with second-order slopes everywhere:

This next one is interesting, in that the two woofers are wired in series, with the upper woofer having a second order filter and the lower one, fourth order. The woofers are also in reverse polarity to the midrange and tweeter. The tweeter and midrange slopes are all second order. This crossover may have only been used in prototype stages:

This version was probably used in some later production. It is very parsimonious with components - the woofers are simply direct-coupled, one capacitor is doing double-duty as part of both the midrange and tweeter filters. The midrange sees simple first-order filters, while the tweeter has a fourth order filter. I have a diagram exactly as shown below, but I also have a physical example in which the woofers are wired in reverse polarity:


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

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