Specifications

SPECIFICATIONS *
Output Power: 28 watts continuous; 56 watts peak.
1M Distortion (60c &7kc at 4: 1): 2% at 28 watts; 0.5%
at 10 watts.
Frequency Response: (2w):I:O. 5db 10c to lOOkc.
HarmonicDistortion: 16 watts at less than 1% 30c to lOkc;
20 watts at Iess than 1% 40 c to 10kc; 28 watts at
less than 1% 50c to 5kc; 8.4 watts at less than
2% at 20c.
Transient Response: excellent square wave reproduction
(4usec risetime) negligible ringing, rapid settl ing
on 10kc square wave.
Transient Distortion (60 cps tone burst): less than 1% at
full power.
Inverse Feedback: 20db
Stability Margin: 12db
Damping Factor: above 8,20 cps - 15kc,
Sensitivity (input for rated output): mag. phono 4mv;
tape head 7.5 ips - 2 mv; tape head 3.75 ips -
3.5mv; mic - 6mv; tuners, auxiliaries - 0.5V.
2
** Hum &Noise Level (below rated output): mag. phono -
60db; tape head - 51 db; mic - 57 db; tuners, aux-
lliaries - 75 db.
Tone Control Range: ±15db at 50c and 10kc.
Speaker Connections: 4,8, and 16 ohms.
Tubes: 4 - ECC83/12AX7, 2 - ECC82/12AU7, 4- EL84,
2 - EZ81.
Size: 15" wide, 4 3/4" high, 10 1/2" deep.
Weight: 241bs.
* Where power output is involved, figures are given for
two channels combined; divide power output figures by
two for specifications of each channel alone. Design
property specifications refer, of course, to either or both
channels.
** Measured with tone controls set "flat", LEVEL control
maximum, and FOCUS control set for maximum gain in
channeI checked.