User Guide
TIP
RING
SLEEVE
Diagram #6
FROM TONE
OR VOLUME
RED WIRES
FROM PICKUPS
MASTER
VOLUME
BATTERY
NEG (-) BLACK
B125
ACTIVE BALANCE
CONTROL
ACTIVE TONE
9V+ POWER BUSS
NOTE REVERSED CONNECTOR
RED
RED
RED
Neck Pickup
(To Upper 3 pin header)
Bridge Pickup
(To Lower 3 pin header)
BOTTOM
VIEW
- 9V +
40 BASS Page 4
Diagram #8
If the instrument has a Battery Holder:
If your instrument has a 9 or 18 Volt battery holder you can still
use the EMG Connectors to supply power to the pickups.
Simply cut and strip the wires from the battery clip provided.
Twist the wires together (Red to Red and Black to Black) and
use the shrink tubing included to cover the connections.
Soldering the wires is recommended.
9/18 VOLT
BATTERY
HOLDER
Cover these connections with the
shrink tubing provided.
BLACK to RING terminal
of the Output Jack
RED to BATTERY OR PICKUP BUSS
BLACK to RING terminal
of the Output Jack
RED TO BATTERY BUSS (+18Volts)
Diagram #9
BATTERY
NEG (-)
RED to BATTERY BUSS
Soldering to the 152B Panel Jack:
If your instrument has a long Panel Jack like the one below
you will have to solder the output cable as shown.
Ground (Black) to the Sleeve
Signal (White) to the Tip
Battery Negative (Black) to the Ring
- 9V +
- 9V +
- 9V +
T
R
S
RED
BLACK
Diagram #5
B125 Active Balance Control
Active Tone / Master Volume
This installation can be used for instruments with 3 control positions like
the diagram above, but use a Balance control instead of 2 Volume controls.
Again, the EMG Active Tone Control shown in this diagram can be replaced
with the EMG-EXB Expander, or the EMG-BTC.
NECK
PICKUP
BRIDGE
PICKUP
ABC
CONTROL
ACTIVE
TONE
MASTER
VOLUME
OUTPUT
JACK
PREFERRED WIRING ORDER
OUTPUT
T
R
S
Diagram #7
1
3
Soldering to the battery buss:
If your instrument has an older EMG Pickup you can solder the
pickup RED wire to the buss. Simply use some needle nose pliers,
pull out the V+ header and solder the RED Wire from the pickup(s)
to any of the pins and then re-insert the header into the housing.
2
+18 Volt Wiring Option:
If you want to operate your instrument at +18 Volts for more
headroom then use 2 batteries wired as below.
Also, if you are using any type of EQ in your instrument
(EMG-BT, BQ) or anything that boosts the pickup signal then
+18 Volts is recommended.
Solder the Black and Red
wires together and cover
the connection with shrink
tubing, or other insulation.
VOLUME
B122rH




