CHAPTER 5
Specifications
ST-150 Stereo power amplifier
Vacuum Tube Complement 8 x 6550C, 2 x 12AT7, 2 x 12BH7
Output Power
20 Hz – 20kHz, into 5 ohm load
Tetrode: 120 watts per channel
Triode: 60 watts per channel
T.H.D. 20 Hz – 20 kHz @ 150W
T.H.D. 20 Hz – 20 kHz @ 80W
less than 3%
Input Sensitivity @ 150 W 100V = 0.880 V
120/240V = 1.0V
Input Impedance 130K Ohms
Optimum Load Range 2 - 8 ohms
S/N Ratio
-95dB, 120 Hz
Power Consumption Idle = 240 W
Full Power = 800 W
Primary Mains Fuse Rating 100V = 15A Ceramic Slo Blo
120V = 15A Ceramic Slo Blo
220/ 240V = 8A Ceramic Slo Blo
B+ Fuse Rating 1A fast acting ceramic 600V
Dimensions W = 19 inches (48cm), D = 12 inches
(26cm), H =9 inches (23 cm)
Weight 60 lbs. (27.22Kg) {total 75 lbs. (34 Kg)
packed}
ST-150 Owner’s Manual
VTL
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