CONTENTS
Professional Specifications .................... 3
Schematic .............................................. 12
Description ............................................ 4
Component Values .............................. 13
Installation ........................................... 4
Initial Adjustment—Biaset ................... 18
Connections............................................. 4
Output Meter Reading ......................... 18
Assembly Instructions............................. 6
In Case of Difficulty .................................19
Mechanical Assembly ........................ 7
Voltages and PC-44 Board Layout ........... 20
Wiring the Output Stage ..................... 9
International AC Line Connections ......... 21
Wiring the Power and Bias Supplies. .11
Service Policy and Limited Warranty….22
Wiring PC-44 and Control Bracket . . .15
Parts List .................................................23
Final Assembly.....................................16
PROFESSIONAL SPECIFICATIONS
Power Output:
120 watts continuous.
Power Response:
20 Hz to 15 kHz within 1 dB of 120 watts with less than
1% total harmonic distortion.
Frequency Response:
+0, -1 dB, 10 Hz to 40 kHz @ 1 watt.
Intermodulation Distortion:
1% or less at rated power using 60 Hz and 7000 Hz
Mixed 4:1. Distortion reduces at lower power levels.
Hum and Noise:
Greater than 95 dB below rated output.
Input:
50,000-ohm load; unbalanced line.
1.6 volts for 120 watts.
Damping Factor:
14 at 16 ohms; 1 kHz.
Output Impedance:
4, 8 and 16 ohms. Power
Consumption:
250 watts.
Tube Complement:
8417 (4); 7199; silicon rectifiers; time delay relay
Fuses:
5 amp AC line; speaker.
Meter:
Switchable for 3 output ranges and for output tube bias.
Finish:
Satin charcoal 1/
8
” steel front panel and
electrostatically applied black epoxy coated 16 gauge
steel chassis.
Size:
19" x 10
1
/
2
" x 8
3
/
4
" high; add 1
1
/
2
" for handles.
Weight:
55 lbs. (25 kg.)
3
