ADA-106 Audio Distribution Amplifier
ADA-106 Audio Distribution Amplifier
ADA-106 Audio Distribution Amplifier
SPECIFICATIONS
ELECTRICAL:
MECHANICAL:
GENERAL DESCRIPTION
OPERATION /INSTALLATION
CIRCUIT DESCRIPTION
ADJUSTMENT PROCEDURES
Place the oscilloscope in Iladd" mode and adjust the Gain Balance
control, P5, for the flattest trace possible; the differential outputs
are now adjusted for eq ual gain.
Connect the two sides of the differential input together and connect
the audio generator between ground and the two sides of the
differential input. Adjust the Common Mode potentiometer P 1 for
minimum output.
CAPACITORS
DIODES
D1-D5 IN 4148
D6-D8 IN 4001
D9 5082-4492
INTEGRATED CIRCUITS
U1 MC 1439
U2 NE531
U3 NE531
U4 MC7815
U5 MC7915
RESISTORS
R1 180 R26 27
R2 180 R27 1K
R3 10K R28 27
R4 10K R29 2.2K
R5 27K R30 270
R6 30K R31 1K
R7 1K R32 3
R8 27 R33 3
R9 27 R34 1K
RIO 27 R35 2.2K
R11 10K R36 270
R12 62K R37 3.6K
R13 27 R38 10K
R14 8.2K R39 240
R15 27 R40 51
R16 2.2K R41 51
R17 270 R42 51
R18 1K R43 51
R19 3 R44 51
R20 3 R45 51
R21 1K R46 51
R22 2.2K R47 51
R23 270 R48 51
R24 27K R49 51
R25 4.7K R50 51
R51 51
VARIABLE
RESISTORS
P1 5K
P2 1K
P3 10K
P4 10K
P5 50K
MISCELLANEOUS HARDWARE
Sigma # Description
~J
~t'!t' ~ ~
GAIN BAL.
R44
51 0 l
Rll
61K P5 SDK ~t5 ~ ~
J
+15
Rl ~~U Rl RIl
17 05
+15 t r ~'-------'~
n:;--o R47 4
~:+
10K +.J..C6
;r,'0U
MJE171 ~
J
AUDIO
R48
Pl
>----"'--.>
~~~
IN 1K
R19 I 51
>~
~
6
4
Rl Cl
C7
fJ. lOU
, • "" It'
180 68u RIO Rl1
17 lK Rl0 R50
1 51
~l"" ,~_~ ~
-15 R52.
DC BAL 51
NOTES
1. UNLESS OTHERWISE SPECIFIED.
-15
~r4
'~J
~~
CAPACITORS, IN PICOFARADS.
1-2 , 1-4 .
~,56
1-1 ONLY.
~J
R14
1 FOR 120V OPERATION AGC 1/4. 17K
FOR 140V OPE RAT ION AGC 1/ 8 .
+15
4. ADA-lOG UTILIZES ONLY + 15 -15 +15 ~r8
R16
~7JEl7I 'VI/1\--~-?9-~-'-'O ~
OUTPUTS 1 - 6 .
17
+..L C11 R19
T lOu UK
m Cll
33 R32
8 • 3
03 '\oV--1 ~
~
SIGMA ELECTRONICS .INC .
04 1810 STATE STREET
Rll EAST PE.'~SBURG PA. 17520
R27 + 3 PH 17171 ~"'!I-2681
lK R15 R14
+ UK 1K AUDIO DISTRIBUTION AMPLIFIER
~~E511 MODEL OWG NO.
ADA 5008
I BRIAN K. ROTE
~E Y D DATE 4-82
-15
SIGMA ELECTRONICS INC.
**WARRANTY**
Sigma Electronics, Inc. warrants that this product is free from defective
material and workmanship and agrees to:
Remedy any defect or replace any defective part within two years of
original purchase, provided that the unit is returned to the factory.
This shall be without any further charge to the owner except for
transportation to the factory, prepaid by the owner in any such
warranty repair.
This warranty does not include any Sigma Electronics product or parts
thereof which have been subjected to misuse, neglect, improper installation,
use in violation of instructions furnished, or accident. It does not extend
to units which have been modified or changed outside our factory; nor to
units from which the serial number has been removed, defaced or changed;
nor to accessories not of our manufacture.
This warranty excludes tubes and assembled products not of Sigma Elec
tronics manufacture, whether or not they are incorporated in a Sigma
Electronics product or sold under a Sigma Electronics part or model
number. Sigma Electronics will not be responsible for any expense or loss
of revenue or property incurred by the purchaser due to a malfunction
in the equipment.