SPECIFICATIONS 

System Performance: 
Response: 16 Hz to 70 kHz (+/- 0.5 dB anechoic, +/- 1 dB in room response typical)
In room low frequency response: (-1.5 dB @ 16Hz, -3 dB @ 13Hz typical, dependent upon room volume)
Efficiency: 93.5 dB (1 watt @ 1 meter)
Harmonic distortion: 0.30 % throughout the bandwidth at rated efficiency
Inter-driver phase deviation: 3 degrees within all cross bands
Noise floor: 68 dB from signal level (maximum noise level), 76dB Typical
Group delay distortion: 3 milliseconds 100 Hz to 16 Hz. 1 millisecond 100 Hz to 20 KHz.
Impedance: 6 ohms nominal (4 ohms minimum @ 80 Hz)
Recommended amplifier power: 15 to 500 Watts

Powered Isobaric Transmission Line Specs: 
Power: 3.2 Kilowatts per channel
Automatic signal sensing and gain matching
Master Gain: +/- 2.5 dB (fixed resistor elements of 0.25 dB increments)
Toggle switch for selecting low frequency contouring: Maximum extension or Transient Speed
Tempered-scale aperiodic tuning
Fully Analog symmetrical circuitry
No digital signal conversion or manipulation

Driver Complement (Per Channel): 
4 x 15" low Q high force factor sub-woofers
1 x 11" ceramic/honeycomb underhung voice-coil midbass
1 x 4.5" ceramic underhung voice-coil midrange
1 x .78 " diamond underhung voice-coil tweeter

Physical Parameters:
Four independent cabinets, two per channel vertically integrated
Overall Height: 87" (221 cm)
Width: 29" (74 cm)
Depth: 32" (82 cm)
Weight: 827 lbs. per channel (375 kilos), 1653 lbs. total (750 Kilos)

Shipping weight: 2002 lbs. (908 kilos)
Shipping weight: 2002 lbs. (908 kilos)