Dynaco Stereo 80 Owners Manual

Page 1

SERIAL NUMBER

Nymaca

This number must be men-
tioned in all communications

concerning this equipment.

STEREO 80

INSTRUCTIONS FOR
ASSEMBLY

OPERATION

..§.-"

POST OFFICE BOX 88

NUAIBCD iNC. COLES 0 8' 9 VENUE/summon. n. J. 08012. u.s.A.

Bob01605@aol.com

Page 2

CONTENTS

Operating instructions ...................... 3 Alternate AC Line Connections .............. 15

Technical Information ______________________ 5 Schematic Diagram ........................ 17

Circuit Description """"""""""" _ ..... 5 In C858 0f lefiCUllY ........................ 18
Performanc T t 5 Service Information for the

e as 5 """"""""""" Technician .............................. 18

Dyna) Preamplifie's ------------------- 6 Parts List ................................. 22

4-Dimensionat SOUnd SYStem ------------ 6 Factory Service and Warranty . . . . . . . .. ..... 24

Assembly Instructions ...................... 7 Pictorial Diagram ............. Back Cover Foldout

SPECIFICATIONS

FREQUENCY RESPONSE: 10 Hz to 50 kHz I0.5 (ll). NOISE: 90 db below rated output.
DAMPING FACTOR: Greater than 40 from 20 Hz to

POWER OUTPUT: 30 watts average continuous 20 kHz-
Power W channel into 8 0th over a Power SEPARATION: More than 60 db from 20 Hz to 10
bandwidth of 20 Hz to 20 kHz at less than 0.5% kHz.

total harmonic distortion. Distortion decreases

INPUT: 100,000 ohms; 1.3 volts for 40 watts output.
at lower power levels.

SEMICONDUCTOR COMPLEMENT: '12 transistors;
10 diodes.

SIZE: 14 x 8" x 4.

INTERMODULATION DISTORTION: Less than 0.10/0
at any power level up to rated power with any

combination of test frequencies. DistOrtion de- WEE-"7313 35-
creases at lower power levels. MAXIMUM POWER CONSUMPTION: 250 watts.

100 Hz lkHz 10 kHz
SQUARE WAVE PERFORMANCE: This is a good indication of linearity from
10 Hz to 100 kHz, since good souare wave reproduction requires bandwidth
in excess of 1." 10th to 10 times displayed frequency.

20 kHz

LOW POWER FREEDOM FROM DISTORTION: at 1i10th watt, 3 20kHz sine
wave (the most difficult audio frequency) shows absolutely no signs of cross-
over or notch distortion.

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