Dynaco ST 79 Service Manual

Page 1

SERIAL NUMBER
I

STEREO/O

INSTRUCTIONS FOR

This number must be men-
tioned in all communications
concerning this equipment.

ASSEMBLY
OPERATION

.uum

law 8 3: mm mLmv Bust!
k H u.
W F Mow _ \ , W
'i, " " ' 7
"50 ,. \ INPV \
DVNAKIV SIERIO 70 \ VDlAM? raw

v > w
L punw u> 1w

Price $1.00

Page 2

Power Output

Frequency Response

Power Response
Intermodulation Distortion
Hum and Noise

Sensitivity

Output Impedances

Damping Factor

Minimum Channel Separation
Power Consumption

P reamp Provision

Tube Complement
Size
Weight

Finish

SP ECIFICATIONS

35 watts continuous, 80 watts peak each channel

t .5 db from 10 cps to 40 kc

20 cps to 20 kc within 1 db of 35 watts at less than 1% distortion

Less than 1% at 35 watts (normally about .570). Less than .0570 at 1 watt
Inaudible; better than 90 db below rated power

1.3 volts rms input for 35 watts out

4, 8, 16 ohms each channel

15

55 db

190 watts 50/60 cps

Two power takeoffs with independent heater windings to eliminate
interaction. Each 6.3 volts 1 amp, 350 volts dc 10 ma. Dynakit pre-
amplifiers plug in directly without modification.

EL-34 (4), 7199 (2), GZ-ZA/fiARlly selenium rectifier.

13" by 9-1/2" by 6-1/2" high

32 pounds

Chassis and bottom plate bright nickel plated. Cover finished in
charcoal brown vinyl paint.