MASCO - Mark Simpson Mfg. PA Amplifier Schematics and Diagrams

Factory Service Manuals
with Schematics:
Admiral

Airline

Apex

Atwater Kent

Belmont Radio

Bendix Auto Radio

Bendix Home Radio

Bosch (American)

Colonial

Crosley

De Forest Crosley

Delco United Motors

Delco 1964-1970

Earl Radio

Electrohome

Emerson

FADA

Firestone/Air Chief

General Electric (U.S.A.)

General Electric (Canada)

JC Penney

Kennedy

Kolster

Kustom Amps

Meissner

Magnavox

Majestic

Marconi (Canada)

Montgomery Ward

Motorola (Galvin)

Northern Electric

Philco

Philco Predicta TV

RCA Victor (USA)

RCA Victor (Canada)

Rogers Majestic DeForest (Canada)

Sears/Silvertone

Sentinel

Sparton (USA)

Sparton (Canada)

Stewart Warner USA

Stewart Warner Canada

Stromberg Carlson

Telefunken

Truetone
Western Auto

VM Voice of Music

Webcor

Westinghouse

Zenith

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Books

MASCO - Mark Simpson Mfg. Co.
Schematics for PA Tube Amplifiers

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AND PRINT !

MASCO public address audio amplifire schematics for the models listed below are published service data from vintage sources*. Each schematic is individually digitized in high resolution to provide the clearest possible scan in a downloadable Adobe PDF file. It normally takes up to 24 hours to receive the download instructions via email but please allow 1 - 2 business days.

View the list of schematics available for MASCO models below.

MASCO Tube Amplifier Schematics
If your model or chassis is not listed below contact me for availability.

NOTE: Model #s with dashes are same as without dashes. Example: MA-25 = MA25

Download Copy Only $7.95

MASCO Model or Chassis:

MASCO PA/Amplifier Models/Chassis Available:
NOTE: Model #s with dashes are same as without dashes. Example: AS18 = AS-18
Some files listed below are available for instant download
by clicking on the Instant Download arrow after the item.

6
52
76
86
375
500
711
808
811
52C
52CR
52L
52LR
52R
A10
A-18
A36
A6
A8
AC12
AC24
ACL
ACS
AFR
AMF
AMP
AS6
AS8
AS10
AS-18
AS36
Audiosphere 27
CAM10
CAM5
CM10
CM20
CM8
CS6P3
D37
D37R
DC37R
DR-5
EMM6
EZT
FM6
HCM
IJM10
IJM5
IM10
IM5
IM-5
JM10
JM5
JM-5
JM5JR
JMP12
JMP6
JMR
LD37
LD37R
MA10EX
MA10HF
MA121
MA-121
MA125
MA-12EX
MA12HF
MA17
MA-17N, MA-17PN
MA-17P early
MA-17P late
MA-20HF early
MA-20HF late4
MA-25, MA-25P early
MA-25, MA-25P late
MA25EX
MA25HF
MA-25HF
MA25N
MA25NR
MA25P
MA25PN
MA35
MA35N
MA35RC
MA50
MA-50
MA50N
MA50NR
MA60
MA75
MA-75
MA75N
MA77
MA77R
MA808
MA8N
MA-8N
MAP105
MAP105N
MAP120
MAP120N
MAP15
MAP-15
MAP18
MB125
MB50N
MB60
MB60
MB75
MB77
MB8N
MC10
MC-10
MC126
MC126P
MC25
MC25N
MC25P
MC25PC
MC25PN
MC25RC
ME18
ME18P
ME27
ME27P3
ME36
ME36R
ME52
ME8
MF10
MF5
MHP110
MHP110X
Midge talk
MM27P
MPA03
MPA-3
MPT04
MPT-4
MRC5
MS-24
MSD16
MU17
MU5
PCM
PM6
PR1
RIC7
RK5
RK5
RK5L
RK5M
RK5ML
RK5SL
RK5SLR
RK6
RK6R
SA202
ST2
ST5
Stereo Broadcaster
T16
TP16A
TVB
WF1A
WFP

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* Schematics offered here are digitized in high resolution from early service publications specifically for servicing public address (PA) systems. Each PA schematic is digitized individually and checked to provide the clearest diagram possible from the original printing.

The data and files offered here are from vintage sources that are no longer published. There is no guarantee of the accuracy of any information offered. It is solely up to the end user to decide that the information and files offered here are accurate and fit for use with their equipment. I am not responsible for any loss or damages that may be incurred from the use of this information.