EMG B125 ACTIVE BALANCE CONTROL Installation Instructions page 4

Output of the ABC Control:
The output of the ABC is a single channel signal that is sent to a
master volume and active tone.
If you want a standard tone control (high end roll off) use the EMG-VLPF.
The following diagrams show any EMG "Active Tone" control being used
i.e. VLPF, EXG, BTC Control, BTS Control, BQC Control, BQS Control, or any
of EMG's OEM Controls like the B30EQ or B64EQ.
Preferred wiring order:
Below is a block diagram showing the preferred wiring order of the controls.
1) ABC Balance Control
2) Active tone control
3) Master Volume
4) Output jack
NECK
PICKUP
ABC
CONTROL
BRIDGE
PICKUP
Diagram #7 (preferred wiring order)
ABC Control / Active Tone / Master Volume / Output Jack
EMG-HZ Neck Pickup
(Upper 3 pin header)
EMG-HZ Bridge Pickup
(Lower 3 pin header)
Alternate wiring order:
1) ABC Balance Control
2) Master Volume
3) Active Tone Control
4) Output jack
Diagram #8 (alternate wiring order)
ABC / Master Volume / Active Tone / Output Jack
- 9V +
EMG-HZ Neck Pickup
(Upper 3 pin header)
EMG-HZ Bridge Pickup
(Lower 3 pin header)
B125 Page 4
ACTIVE MASTER
TONE VOLUME
RED
- 9V +
B125
ACTIVE BALANCE
CONTROL
RED
NECK
PICKUP
ABC
CONTROL
BRIDGE
PICKUP
RED
B125
RED
ACTIVE BALANCE
CONTROL
RED
All of the EMG Active controls use the same color coded connector
shown below.
NOTE: Reversed connector! Pins 1 and 2 are reversed.
Color Code for EMG Active Tone controls and accessories.
White:
OUTPUT
Black:
JACK
Black:
Green:
Red:
9V+ POWER BUSS
RED
MASTER
VOLUME
MASTER VOLUME AND
ACTIVE TONE REVERSED
MASTER ACTIVE
VOLUME TONE
9V+ POWER BUSS
BATTERY
NEG (-) BLACK
RED
MASTER
VOLUME
Make sure the connectors are plugged on as shown.
Diagram #1
Input
Ground for Input
Ground for Output
Output
V+ Supply
BATTERY
NEG (-) BLACK
NOTE REVERSED CONNECTOR!
ACTIVE
TONE
S
OUTPUT
JACK
NOTE REVERSED CONNECTOR
ACTIVE
TONE
OUTPUT
R
BOTTOM VIEW
T
OUTPUT
R
S
T
BOTTOM VIEW