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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.
- 9V +
RED WIRES
FROM PICKUPS
Neck Pickup
(To Upper 3 pin header)
Bridge Pickup
(To Lower 3 pin header)
Diagram #6
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
RED to BATTERY BUSS
- 9V +
BATTERY
NEG (-)
SLEEVE
FROM TONE
OR VOLUME
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.
Cover these connections with the
shrink tubing provided.
9/18 VOLT
BATTERY
HOLDER
45-X BASS Page 4
RED
B125
ACTIVE BALANCE
CONTROL
RED
RING
TIP
RED to BATTERY OR PICKUP BUSS
BLACK to RING terminal
of the Output Jack
PREFERRED WIRING ORDER
NECK
PICKUP
ABC
CONTROL
BRIDGE
PICKUP
9V+ POWER BUSS
BATTERY
NEG (-) BLACK
RED
NOTE:
MASTER
REVERSED CONNECTOR
VOLUME
ACTIVE TONE
Diagram #7
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.
1
2
Diagram #9
+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.
RED TO BATTERY BUSS (+18Volts)
- 9V +
BLACK
RED
R
- 9V +
BLACK to RING terminal
S
of the Output Jack
ACTIVE
MASTER
OUTPUT
TONE
VOLUME
S
3
Solder the Black and Red
wires together and cover
the connection with shrink
tubing, or other insulation.
T
JACK
OUTPUT
R
T
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