EMG B125 ACTIVE BALANCE CONTROL Installation Instructions page 2

Installation Instructions:
EMG Model: B125 ABC (Active Balance Control)
.
Existing EMG-HZ Passive Pickup installations:
If you already have EMG-HZ Pickups in your instrument you can use
the existing pickup cables or you can use the new plug-in cables provided.
The new cables are pre-wired to use the pickup in the humbucking mode.
If you are using a coil-tap switch, or a phase switch, use the existing
cables and use the hand soldered method for installation (see below).
Diagrams 1, 2, and 3 illustrate how to connect the pickups to the ABC Control
by using the EMG Plug-in connectors. Diagrams 4, 5, and 6 show how to solder
the pickups to the PC Board. The output of the ABC is then illustrated in diagrams
on page 4 in a variety of configurations.
Diagram #1
EMG-HZ Plug-in Inputs & Output
Pin 1
This pin and the one below it supply 9V+ for EMG Active Pickups:
DO NOT use either pin when using passive pickups.
NECK PICKUP (White tubing)
(Upper 3 pin header)
BRIDGE PICKUP (Black tubing)
(Lower 3 pin header)
RED TO 9V + BUSS
See any EMG-HZ Data Sheet
for the coil / color codes
The RED Wire of the EMG-HZ Pickup is a coil wire. It is
the signal output (hot) wire. DO NOT hook this wire to 9V+
or you will be sorry. Really sorry! If you are installing new
EMG-HZ Passive Pickups refer to those data sheets.
B125 Page 2
Pin 2 Ground for pickup
Pin 3 Input for pickup
TO VOLUME CONTROL
EMG-HZ Wire Order:
Pin 1 Green (GRN)
Pin 2 White (WHT)
Pin 3 Braid (GND)
Pin 4 Red (RED)
Pin 5 Black (BLK)
Mixing EMG-HZ or other Passive Pickups and EMG Active Pickups:
Use either the Plug-in connector for an EMG-HZ (shown below)
or hand solder any passive pickup to the PC Board using the solder
pads provided. The EMG Active Pickup can be plugged into the chosen
3 pin input header or its cable can be soldered to the PC Board.
The Red wire (9V+) of the EMG should be plugged onto Pin 1 of the ABC
as shown or soldered to the buss connector as shown on page 3.
Diagram #2
EMG-HZ Plug-in Input (Bridge Pickup)
EMG Active Pickup Input (Neck Pickup)
Pin 2 Ground for pickup
Pin 1 Voltage (9V+) for Active Pickups
EMG Active Neck Pickup
(Upper 3 pin header)
EMG-HZ Bridge Pickup (Black tubing)
(Lower 3 pin header)
RED TO 9V + BUSS
Diagram #3
EMG Active Pickup Inputs:
Pin 2 Ground for pickup
Pin 1 Voltage (9V+) for Active Pickups
EMG Active Neck Pickup
(Upper 3 pin header)
EMG Active Bridge Pickup
(Lower 3 pin header)
Pin 3 Input for pickup
TO VOLUME CONTROL
Pin 3 Input for pickup
RED TO 9V + BUSS
OUTPUT