NOTICE: The office will be closed Tuesday July 17th through Sunday July 22nd. Any orders placed during that time will be processed on Monday 7/23/18.
Instant Downloads are not affected.
Factory Service Manuals
Home PageFactory Service ManualsBasic SchematicsHard CopiesAboutContactView Cart

Factory Service Manuals
with Schematics:
NOTICE: The office will be closed Tuesday July 17th through Sunday July 22nd. Any orders placed during that time will be processed on Monday 7/23/18.
Instant Downloads are not affected.
Vintage Tube Audio Schematics
PA Schematics for Tube Amplifiers

Public Address Amplifier Schematics

Public Address (PA), amplifier, and tube audio schematics and diagrams for the manufacturers and brands 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, printable, Adobe PDF file. Most of these early PA and amplifier schematics are usually 1 to 4 pages of information.

View the Lists of tube PA amplifier schematics I have available for vintage amplifiers and Public Address systems below. It normally takes up to 24 hours to receive the download instructions via email but please allow 1 or 2 business days for the schematic to be digitized and download instructions provided via email.

Click on a manufacturer or brand below to view the PA/amplifier schematics available.
If models for any manufacturer below are not listed yet contact me for availability.
Admiral Corp.
Air King
Alamo Electronic Corp.
Allied Radio Corp.
Altec Lansing Corp.
American Comm. Corp.
American Sound Products
Amplifier Corp. of America
Ansley Radio Corp.
Apex Radio & Television
Associated Electrical Ind.
Audar Inc.
Audio Comm. Mfg. Co.
Audio Dev. Co.
Automatic Musical Instrument Co. (AMI)
Automatic Projector Corp.
Avco Mfg. Corp. (Crosley) Aviola Radio Corp.
Beam Radionics Corp.
Bell Sound Systems
Belmont Radio Corp.
Bigg of California
David Bogen Co. (Bogen)
Brook Electronics Inc.
Brown-Ebinger Radio (Berco)
Caltron Products
Challenger Amplifier Co.
Clark Radio Equipment
Collins Audio Products
Comun-A-Phone Systems
Concord Radio Corp.
Crosley Division (Avco)
Dalmo Victor Co.
Decca Inc.
De Vry Corp.
Dual Eng. Corp.
Dynavox Corp.
Eastern Amplifier Corp.
Eckstrin Ratio and Television
Electro-Acoustic Products (Magnavox)
Electromatic Mfg. Corp.
Electronic Design Corp.
Electronic Devices Inc.
Electronic Labs Inc.
Electronic Trading Co.
Ellinwood Industries
Emerson Radio & Phonograph Corp.
Epiphone Inc.
Espey Manufacturing Inc.
Fada Radio & Electric
Federal Mfg. & Elec.
Federated Purchaser Inc.
Gamble-Skogmo (Coronado)
Garod Radio Corp.
GE - General Electric
General Television & Radio
General Transformer Corp.
Gibbs (Thomas B. Gibbs)
Goodrich (B.F. Goodrich Co.)
W.T. Grant (Grantline)
L. Charlton Green Co.
Hamilton Electric Co.
Hammond Instrument Co.
Inter-Com System of America
Jackson Industries
Jefferson Electric Co.
Jewel Radio Corp.
Langevin Mfg. Corp.
Laurehk Radio Mfg. Co.
Lewyt Corp.
Lyman Electr. Corp.
Lyon & Healy Inc.
Magna Electronics
Magnavox (Electro-Acoustic)
Maguire Ind. (Thordarson)
MASCO (Mark Simpson Mfg.)
John Meck Industries Inc.
Mectron Corp.
Meissner Mfg.
Mellaphone Corp.
Mercury Electrical Labs
Montgomery Ward (Airline)
Motiograph Inc.
Motorola Inc.
Movie-Mite Corp.
Musitron Co.
National-Dobro Corp.
National Filben Corp.
R.W. Neil Co.
Nelge Electric Ltd.
Newark Electric Co.
Operadio Mfg. Co.
Optron Inc.
Packard-Bell Co.
Philco Corp.
Phil-Mar Mfg. Corp.
Pilgrim Elec. Corp.
Pickering & Co.
Precision Electronics Inc.
Presto Recording Corp.
Porto-Matic Corp.
RCA (Radio Corporation of America)
Radio Craftsmen Inc.
Radio Parts Co.
Radio Wire Television Inc.
Radolek Co.
Rauland Corp.
Regal Electronics Corp.
Remler Company Ltd.
Rock-Ola Mfg. Corp.
Scott Radio Labs Inc.
Sears Roebuck & Co.
Seeburg (J.P. Seeburg Corp.)
Setchell Carlson Inc.
Sheridan Elect. Corp.
Mark Simpson Mfg. Co. (MASCO)
Sonora Radio & Television
Sonotone Corp.
Sound Inc.
Speak-O-Phone Record & Equip. Co.
Steelman Radio Corp.
Story & Clark
Stromberg-Carlson Co.
Sundt Eng. Co.
Symphonic Radio & Elect.
Talk-A-Phone Co.
Telequip Radio Co.
Tele-Tone Radio Corp.
Teletran Products
Thordarson Elec. Mfg. (Maguire)
Trav-Ler Radio Corp.
United Scientific Labs Inc.
Valco Mfg. Co.
Walker Jimieson Inc.
Walsh Engineering
Watterson Radio Mfg. Corp.
Webster Electric Co.
Western Auto Supply
Wilcox-Gay Corp.
Worner Elect. Devices
Wurlitzer (Rudolph Wurlitzer Co.)
Zenith Radio Corp.
Order on line now. Credit Cards and PayPal accepted.
* 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.

Please Note: 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.

Crosley Emerson General Electric Marconi Motorola Philco RCA Victor Sears/Silvertone Zenith More      Copyright © 1995-2018 Steve Johnson, Elbridge NY