This is the 24 pages manual for Dynaco Stereo 120 Owners Manual.
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SERIAL NUMBER
NyNa CD
This number must be men-
5 I E E0 lioned in all communications
concerning this equipment.
INSTRUCTIONS FOR
ASSEMBLY
OPERATION
POST OFFICE aux 83
diED INC- MS 0 3' 05" "ENuE/BLACKWOOD. n. J. 08012. U.S.A.
Bob01605@aol.com
CONTENTS
Operating Instructions ...................... 3 Assembly Instructions ................ ..... * '7::_ .
Technical Information ...................... 5 Schematic Diagram ....................... .. . 12
Circuit Description ..................... 5 In Case of Difficulty . . . . . .. . .. . . . . . . . .; ..... 19;,{1'
Performance Testing ............. . ..... 5 Service information for the Technician ......... '. 20;33_
Dynaco Preamplifiers ................... 6 Factory Service and Warranty ................ ,, '22»
4-Dimensional Sound System ............ 6 Pictorial Diagram ............ Back Cover Foidoot i,
240 Volt Conneclions ,,,,,,,,,,,,,,,,,,, 7 Parts LIST ........................... Back Cover * I
SPECIFICATIONS
FREQUENCY RESPONSE: 5 Hz to 100 kHz $0.5 db. NOISE: 95 db below rated output unweighted with
POWER OUTPUT RATING' 60 watts avenge con- shorted input; 100 (lb down by IHF standards.
{inuous poxver per channel in) 8 ohms at any DAMPING FACTOR: Greater than 40 from 20 HZ to
frequency between 25 Hz and 15 kHz at iess than 20 kHz.
0.5% total harmonic distortion. Distortion de SEPARATION: More than 70 db from 20 Hz to 20
creases at lower power levels. This is in accord- kHz
ance with F.T.C. rating requirements, including
preconditioning. INPUT: 100 000 ohms; 15 volts tor 60 watts output
SEMICONDUCTOR COMPLEMENT: 15 transistors;
INTERMODULATION DISTORTION: Less than O.5°/o 15 diodes.
at any power level up to 60 watts per channel . , . I _n .. i, _
intoBohms with any combination of test frequen' SIZE' I3 x 10 A x 4 ' WEIGHT' 20 35'
cies. Distortion reduces at lower power levels. MAXIMUM POWER CONSUMPTION: 400 watts.
100 Hz lkHz 10 kHz
SQUARE WAVE PERFORMANCE: This is a good indication of linearity from
10 Hz to 100 kHz. since good square wave reproductiOn requires bandwidth
in excess of 1.." 10th to 10 times displayed frequency.
2 kHz 20 kHz TONE BURST:
4 cycle 20 kHz through amplifier at 60
watts is indistinguishable from gener-
ator (below).
INPUT-OUTPUT LINEARITY AT 60 WATTS
Bob01605@aol.com