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Factory Service Manuals
with Schematics:
 
Operadio Mfg. Co. PA Schematics
for Tube Audio Amplifiers - Only $7.50!

DOWNLOAD
AND PRINT !

Operadio 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. Service file is usually 1 to 2 pages. It normally takes up to 24 hours to receive the download instructions via email but please allow 1 - 2 business days.

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

Download Copy Only $7.50

Model/Chassis Number

Operadio PA/Audio Models/Chassis Available:
1A35
1A65
1A70
1A140
4A11
4A25
4A25A
4A25C
4M25
108 PA System
117 PA System
124, W PA System
132 PA System
135, W135, Type A, early/late
135, W135, Type A Late
140 Type B, Early
145, W145, Early
145 Type C
145, W145, Late
154
155
160, W160, Late
161
162
164
170
190
420B-6
813 Amplifier
817 Amplifier
822, 822P Amplifier
831 Amplifier
833 Amplifier
835
835 AUR
835 U
835 UR
870B
950
990
1005
1010
1010A
1012B
1180A
1025
A3580
A3585
A3590
E135, EW135
E145, EW145

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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.


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