Rockola O Amplfier Schematic
image/svg+xml
Rockola O Amplfier Schematic
2019-06-11
Alan Segal
Public Domain Dedication http://creativecommons.org/publicdomain/zero/1.0/
Amp Amplifier Rockola Schematic O Rock-ola Rock-o-la
This is a resmastered version of the hard to find schematic
for the Rockola "O" amplifier
2017-08-20.1
Alan Segal
Alan Segal
Rockola
Rockola O Amp Schematic on web (various locations)
3 AMPFUSE PLUG TOPOWERPANEL BLACK BLK YELLOW RED YELLOW RED GREEN 5U4G 16μF 8μF 8μF 8μF TO TUBEHEATERS (X) 200ΩRELAYCOIL 3000Ω 25,000Ω 2 MΩ 250,000Ω INPUTRECEPTACLE 50,000 Ω BASS CONTROL 220 V YELLOW GREEN RED 300 V 370 V 380 V CHOKE - 11HNO PH 3682-1 PLUG JUMPER SPEAKER FIELD C B A - + BLUE TRANSORMERNO PH3683 8Ω GREEN 4Ω SLATE 2Ω YELLOW 1 2 3 4 BLK. BROWN RED
10V BLK 6V BRN
q e w r
PU
w i r y
.0008μF
.0075μF
e w i t u r
q e w t r q e w r t
SPEAKERPLUG SPEAKERRECEPTACLE
RED-YEL
TRANSFORMERNO PH3685-5
X
X
t
X
X
e w i u
1000Ω(CANDOHM)
285 V
e w i t u r
X
X
.0005μF
50,000Ω
100,000 ΩTREBLE CONTROL
SCHEMATIC DIAGRAM ROCKOLA "O" Amp1422 - 1426 VOLUME CONTROL &TONE COMPENSATIONON SINGLE SHAFT
.04 μF
.04 μF
.01 μF
TRANSFORMERNO PH3684-1
6L6G 6L6G 6J5GT 50μF BLK BLUE .02 μF 2500 Ω 50μF
30,000Ω 5,000 Ω VOICE COIL8 Ω
CHOKE - 11HNO. PH 3682-1 ----
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UPDATES:2019-06-11 - Added Jumper on speaker plug q-t to power amp
Do NOT run AMP without speaker load!