Rane P120 Diagram
Connect input jack
ground tab to
Preamp Star Ground
R8
To “Hot” tab of
input jack
12AX7
X
4
3
2
1
Heater Wiring:
Solder one wire to pins 4 and 5 of the 12AX7, another
wire to pin 9 of the 12AX7. Those wires should be
tightly twisted together and soldered to pins 4 & 5
of the 6BQ5. Pins 4 & 5 of the 6BQ5 should be soldered
to the eyelets holding R18 and R19 (marked by X’s.)
X
5
6
7
8
9
X
R6
X
4
3
2
6BQ5
X
5
1
Speaker Jack
- In the P1 it isn’t necessary to have the
speaker jack connecting to chassis ground.
i.e. Plastic isolating washers are OK.
- This will probably give you the lowest amount
of noise.
6
7
8
9
Power Switch
R5
To Power
Cord, Green
Wire to separate
chassis ground
R7
R16
Preamp Star Ground
+++
R12
R3
+++
R14
C9
R13
C10
C3
C5
R9
Volume Treble
R2
R4
+++
+++
+++
+++
C2
+++
C8
C6
C1
R1
R10
R15
C11
C7 C13
R17
C12
D2
D1
R18
R19
HT
Center Tap (Red w/Yellow
X
X
Stripe)
Standby Switch
Power Amp Star Ground
Note: If your PT has a center-tapped
6.3V winding and you choose to use the
100 ohm resistors, DO NOT ground
Mid
Bass
AX84 P1 Wiring Diagram Rev. 11
Drawing revised February 27, 2004
the center tap.
Drawn by Jim Jones
http://members.shaw.ca/house-of-jim
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