Western electric 94 d schematic

Page 1

Wemmflecnic Company
No.94-D AMPLIFIER

COMMERCIAL PRODUCTS NO I - ll
APPARATUS REFERENCE SHEET AMPLIFIER
94 D
2 - I5 - 38

ELmTkICAJ. cm 53' cm mm;

mm ........... 45 mmwuaw woman
BETWEEN A soc-om;
GENERATOR mm A 500
OR B-OI'IM LOAD. FIG. 1

OPERATES F1102; ------ 0-12000 OHIZS

IIITE «AI. INPUT ILIA'EDAMIE - 25000 OHLIS

DPEATES INTO ------ 8 0k 500 OHEIS
IIITEhAIAL OUTPUT IMPEDAICE- 1/2 0? LOAD IMPEDANCE
OUTPUT POWER ------- 12 WATTS 0E. 'JJDB

(0 LEVEL - .006 WATTS)
573 TOTAL HAMIONIC
DISTORTION. FIGS. 2&3

OUTPUT NOISE ------- (-) 40 DE UNHEIGHTED
(o LEVEL - .006 WATTS)
Pom SUPPLY ------- lob-125 vows, 45-65

CYCLES, 100 WATTS.
FUSE FOR 1.25 MIPS. ' '

GAIN COKTROL ------- 25,000 OHH POTAUN'HALJ FIGURE 2 a.
_- D
POW-2'1 oV'z'r-u'r vs. om rumtomc DISTOmION "
W rs
PANEL DILZENSIONS """ 19" x 7" 1. The distortion 1: primarily mix-d harmonxc " o
1:33;! : : : : : : Z : : : Imiég; 20 L83. 2. The fundamental frlcuancy 15 1000 c.p.s. 4
MOUNTING --------- STD. 19" RELAY RACK OH

SUITABLE CABINET.
m: Tim 94D ALIPLIFIER MAY BE ORDERED WITH DIF-
FEhEZIT HAT FINISHES AS FOLLOWS:

Tot-l Elna! Dulflrlion ll

mm mm
94D-3 RUBBER FINISH BLACK JAPAN 2
SAD-15 ALUMINUH GRAY FINISH "
SAID-24 ALUEIN'UII LACQUEII FINISH
V E. III BEES
HEEL m

a load nun-nu
FIIIST STAGE TWO - 617 OR TWO 6176

smom: STAGE mm - 6L6 01. m 61.56 _ =
mnyum on: - 514 on om; sum / :I. 3'
i ' 3
I . .
W I: 2:. 21 n :1 as ,.
ESE-624213 ASSEXELY Ya'cr output in (.009 Ian - 0 Laval);
ESQ-624214 scamnc
EEK-624215 wmma DIAGRAM l *2
II
FIE-743672 rowan OUTPUT vs. 10m. mom : ,
15-743673 DISTORTION 3r
Pc'm mTIlfl' VS. NO'I'AI HA UHIC DISIORTION tub;
NOTE: THE 94D AIEPLIFIIR IS SIMILAR TO THE 940 E-
MYLIFIEH EXCEPT THAT IT us A vuuma comm. mm m a
A pom. swmn ovum: on A 5mm on m; UNDER- 1. m. dSstortIan In mm, mm bar-manic -
5an OF THE CHASSIS, mm m: comm mums 2_ m ,m mm is a m, a
mmmmc maven TIE NAT FOR mmuon man was . a
won or m: AMPLIFIER.
g G
.4
_ r ' "f
Hawk: 1 L
m. mm: vs. murmur! cmcmrsmc 4
g A J I .7 ,
_ E I
E7 41777- « 747777 , I
g, i- I I J I
I 4.--»; I I ' w
mqnmc! I)! GIG-IS PIN SICOND I a A
L I
I! I II 1 fl! 1' SI! 5!
- I I 1
ran wmmc mcnm mo scusmmc 5:: REAR or ms sum , I IM'IMII "1" -°"° 7'?" ' - We

,77_

Page 2

Western Electric Company

No.94-D AMPLIFIER

WIRING DDAGRAM

SCHEMATIC ''

M

w

w:

n-

m

M-
1-: a: p. A... W mm
M n a $0., can, £ In...»u 31
a. e... . Luau a .1 a y!«
m»... Ian-IL! 6. 9-1 I... ,« ,5."
z... ,L 1...... a .. on

4.: h-w {.1 73

In '4
{ta-MW 5;
mm. My au\
A4. a". u
4m..m)

m: n.4,... an m
{.M unu- Am 1-." 4
tone-

uc Lump-en na- m n.
A... 1- so... 5 v M

A... A. ,

an Erhnwh 5-
1.. .~ w.