Specifications

15
Specifications
Note: Power ratings based on a 117 VAC power line input. All specifications are made
on the 8 ohm taps, utilizing an 8 ohm load unless otherwise specified.
Power Output: 220 watts continuous at 8, 4 and 2 ohms from 20 Hz to 20 kHz with less than 1% total
harmonic distortion terminated with rated load (typically <0.5% @ 220 watts 1 kHz)
Actual power output available at clipping (defined as <1% THD) approximately 240
watts RMS
SMPTE Intermodulation
Distortion: <1% 20 Hz to 20 kHz @ 220 watts output
Power Bandwidth: 15 Hz to 60 kHz (-0.5 dB points)
5 Hz to 120 kHz (-3 dB points)
Frequency Response: 5 Hz to 75 kHz @ 1 watt (-0.5 dB points)
2 Hz to 150 kHz @ 1 watt (-3 dB points)
Input Sensitivity 2.2V RMS balanced for 220 watts output
(for 220 watt output): 2.2V RMS single-ended (inverting or non-inverting)
Input Impedance: 200K ohms balanced
100K ohms single-ended (inverting or non-inverting)
Damping Factor: >50 (determined using the IHF method from RS-490)
Output Impedance: 0.25 ohms at 1 kHz
Negative Voltage Feedback: 18 dB
Hum and Noise: approximately 400 microvolts of wideband, unweighted noise @ the 8 ohm taps,
input muted; -110 dB below a 220 watt output
Rise Time: 2.8 microseconds
Slew Rate: 19 volts/microsecond
Power Requirements: 110-120 VAC 60 Hz (220-240 VAC); 580VA at rated output, 650VA maximum
and 375VA with no signal input
Tube Complement 8 (4 matched pair) x 6550C or KT88 - power output; 4 x 6922 - input/driver; 2 x 5687
(per mono amp): high voltage driver
Dimensions (per mono amp): 18” (46 cm) W x 22” (56 cm) D x 9” (23 cm ) H
Weight (approx.): 100 lbs (45 kg) net each (unpacked)
Warranty: 5 year parts & labor; 1 year on the tubes
Sonic Frontiers continually strives to improve their products; specifications are
subject to change without notice.