Questions about the newer Allison Model 1 and Model 4 Speakers?

Found this with a bit of Google searching. This is for the Allison Ones.

Specifications Speaker complement:Two 10" (254 mm) woofers;Two 3½" (89 mm) Convex Diaphragm mid-range units;Two 1" (25 mm) Convex Diaphragm tweeters

Crossover frequencies: 350 and 3,750 Hz Crossover network: LC half-section at both crossover frequencies. Air-core chokes and non-polar computer-grade capacitors are used. Three-position control switch (accessible from front) supplied for selection of system acoustic power response, from nominally flat to concert-hall balance slope.

Impedance: 8 Ω nominal (7 Ω minimum at any setting of balance switch) Efficiency: better than 0,7% when placed at floor-wall intersection.

Minimum amplifier power: 30 watts per channel to produce 100 dB sound pressure level in most domestic room environments. Acoustic power output capability: 0,5 acoustic watt minimum , over full frequency range, with 70 watt peak input.

System resonance frequency: 45 Hz, nominal Effective system Q: 1.0. Low-frequency response -3 dB at 35,5 Hz, -6 dB at 29,5 Hz

Enclosure: Stabilized Radiation Loading sealed acoustic suspension design.Outside dimensions: 40" high by 19" wide by 10¾" front to back (1002 cm by 483 mm by 273 mm). Internal volume: 2,550 cubic inches (41,8 liters).Material: High density particle board veneered with walnut, oiled finish

Weight: 67 lbs (30,4 kg)Full Warranty for Five Years

Here's the Allison Four specs I found:

Specifications Speaker complement:One 8" (203 mm) woofers;Two 1" (25 mm) Convex Diaphragm tweeters

Crossover frequencies: 2 kHz Crossover network: LC quarter-section. Air-core tapped choke and polyester capacitors are used. Three-position control switch (accessible from front) supplied for selection of system acoustic power response, from nominally flat to concert-hall balance slope.

Impedance: 8 Ω nominal (6,5 Ω minimum at any setting of balance switch) Efficiency: better than 0,7% when placed with back against wall.Minimum amplifier power: 30 watts per channel to produce 100 dB sound pressure level in most domestic room environments.

Acoustic power output capability: 0,5 acoustic watt minimum , over full frequency range, with 70 watt peak input.0,25 acoustic watt minimum in lowest octave, with 35 watts input.System resonance frequency: 52 Hz, nominal Effective system Q: 1.0. Low-frequency response -3 dB at 41 Hz, -6 dB at 34,5 Hz, when placed close to center of large wall. Low-frequency output increases when system is placed in typical positions with respect to side wall and floor or ceiling.

Enclosure: Stabilized Radiation Loading sealed acoustic suspension design.Outside dimensions: 11" high by 19⅜" wide by 10" front to back (279 mm by 492 mm by 250 mm). Internal volume: 1,265 cubic inches (20,7 liters).Material: High density particle board veneered with walnut, oiled finish

Weight: 23,5 lbs (10,7 kg) Full Warranty for Five Years

I believe those specs are for the older model allison speakers. It is the newer models circa 2002-2006 i believe.  

Checkout the saved allisionacoustics.com web pages on the internet's "wayback machine" at web.archive.org. There are quite a few captures of Allison's web pages to about 2008. 

Here's info from a 1/1/2007 web page. Specs look roughly the same, though not as detailed as above.
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These exceptional loudspeakers share the same acoustic properties as the original Allison Ones, first manufactured by Roy Allison in 1974. Improvements include fine furniture cherry cabinetry and Roy Allison-redesigned tweeters, midranges and cross-overs.

The Allison One is designed for placement against a flat wall but not in a corner. Essentially a triangular column, the Allison One offers two faces at 90° angles from one another, or 45° from the wall, each populated with a tweeter, midrange and 10" woofer.

Five Year Limited Warranty

Crossover Frequency: 350 Hz ; 3750 Hz
Impedance: 8 Ohm
SPL: 91 dB
Amplifier Power: 30-200 Watts / Channel
Frequency Response: 32 Hz - 25000 Hz
Dimension (HxWxD): 41.31" x 15.75" x 11.25"

Great job mlsstl guess they did retain the 8 ohm in the newer model, most likely the same in the model four. they are truly wonderful speakers.