EMG B157 Pickup Buss Service manual

V+
General INFORMATION:
The B157 EMG Pickup Buss provides a convenient way to install EMG Pickups without soldering. The buss includes an input/output section for
the pickup signals. A V+ Supply buss for supplying the pickups and accessories with battery power. A two section terminal block and additional
header for connecting the selection switch and any ground wires. In addition, solder pads are provided for both the Input/Output section and the
V+ Supply buss so older EMG Pickups without connectors can be easily soldered to both busses.
The Pickup Buss can also be used for passive EMG-HZ Pickups.
1) Pickup Input/Output Buss
2) Switch Block
Pickup send and return from the selection switch (GREEN)
3) V+ Supply Buss
2a) Switch Header (Alternate switch send and return)
4) Ground Block (BLACK)
0230-0113E
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INSTALLATION INFORMATION
EMG MODEL:B157 EMG PICKUP BUSS FOR 2 PICKUPS
USING A SELECTION SWITCH
(ACTIVE OR PASSIVE EMG PICKUPS)
BRIDGE PICKUP INPUT (POSITION 1)
NECK PICKUP INPUT (POSITION 2)
OUTPUT (POSITION 3)
NECK PICKUP
BRIDGE PICKUP
The EMG Pickup Buss has 4 main sections.
All 4 sections are typically used, so read the
instructions and use the diagrams for assistance.
Section 1) Pickup Input/Output Buss:
This is the 6 pin header with the BLACK shroud.
Diagram #1 (Master Volume / Master Tone Controls)
This diagram shows the pickups plugged directly into the Input/Output
buss (Positions 1 and 2). Use diagram #1 if your guitar has only a
Master Volume, or only a Master Volume and Master Tone.
The output of the buss (Position 3) will go to the Master Volume Control,
then to the tone control, and finally to the output jack.
NK VOLUME
FROM NECK PICKUP
FROM BRIDGE PICKUP
BR VOLUME
BRIDGE PICKUP IN AFTER VOLUME
NECK PICKUP IN AFTER VOLUME
OUTPUT
Diagram #2
B
ONK
BR GND
V+
NO
(OUTPUT)
(INPUT NECK PICKUP) (SHIELD=GROUND)
(INPUT BRIDGE PICKUP)
(WHITE WIRE=SIGNAL)
Soldering to the Input/Output Buss
If you have an older EMG Pickup without connectors, you can connect the
to the Input/Output buss by soldering to the pads provided.
Diagram #1
OUTPUT CABLE TO
MASTER VOLUME
ONK
BR GND
V+
.750
1.325
.725
BNO
OUTPUT CABLE TO JACK
Diagram #2 (Separate Volumes for each Pickup)
This diagram shows the pickups plugged into the volume controls, then
into the Input/Output buss (Positions 1 and 2). Use diagram #2 If your
guitar has a separate Volume control for each pickup. The output of the
buss (Position 3) can go directly to the output jack as shown in diagram #2,
or it might go to a Master Tone Control, then to the output jack.
Diagram #3
B - Bridge P/U
N - Neck P/U
O - Output
- Ground
N
NK
BR OGND
BO

BRIDGE PICKUP
GROUND
NECK PICKUP
OUTPUT
Diagram #6
SWITCH HEADER
(ALTERNATE)
- 9V +
- 9V +
B157 Page 2
Diagram #7
B
ONK
BR GND
V+
NO
SOLDER PADS FOR V+
Soldering to the V+ Buss
If you have an older EMG Pickup without the RED V+ connectors
you can solder to any of the 5 solder pads to supply voltage to
the pickup. Solder the RED of the battery to any one of these pads
to supply 9V+.
RED WIRES
FROM PICKUPS
BATTERY
NEG (-)
RED WIRES
FROM PICKUPS
AND BATTERY RED
BATTERY
NEG (-)
RED
Section 3) V+ Supply Buss
(for Pickups and accessories)
This is the 6 pin header with the RED Shroud
Diagram #7
The V+ Supply buss distributes 9V+ to the pickups and any EMG
Accessory circuits such as the SPC, EXG, RPC, or BT.
The RED wire(s) of those accesories will also plug into the V+ Buss.
Plug the RED wires from the pickups and the RED wire of the battery
clip into V+ Supply Buss. If you need to solder to the buss,
see diagram #8 below.
Section 4) Ground Block
(for Switch Ground / String Ground (Passive Pickups)
or Ground wires from Pickup Cavities.
This is the BLACK Section of the terminal block.
2 terminals are provided, and as many as 4 (22 awg) wires can be
accomodated. One terminal can be used for the ground wire from the
switch, and the other can be used for any other ground wire
requirements. This provides a convenient place to put ground wires
from shielding ora bridge ground if your guitar has a passive pickup.
Section 2a) Switch Header (Alternate)
This alternate Switch header is for Epiphone guitars, or for other pre-wired
instruments with similar 0.1 (2.5mm) inch spaced connectors that come
from the switch. Newer model Epiphone Les Paul Models feature a connector
from the selection switch. The color code of the Epiphone connector is:
Black = Ground
White= Switch Output
Yellow= Neck Pickup
Red= Bridge Pickup
The Switch Header (4 pin header directly behind the terminal block) performs
the same function as the green terminal block, only it uses a plug on connector.
If your instrument has a connector that is compatible with the alternate header
you will not need to use the GREEN terminal block.
Diagram #9
GROUND WIRES FROM...
PICKUP CAVITY SHIELDING
BRIDGE GROUND (PASSIVE PICKUPS)
RED WIRE
FROM BATTERY
Diagram #5
1234
5
6
7
8
Diagram #4
Section 2) Switch Block:
This is the GREEN Section of the terminal Block.
The Pickup Signals are routed to and from the selection switch via the
GREEN terminal Block. Strip the wires and insert them into the terminal block
as shown. Tighten the screws with a small screwdriver.
Two styles of switch are shown, toggle (diagram #4) and lever (diagram #5)
The wires from the switch (wire colors are not important) go to the following
terminals on the Switch terminal block.
The BR terminal is for the Bridge Pickup
The NK terminal is for the Neck Pickup
The O terminal is for the Output from the switch
Diagram #8
If you do not have a switch. Install jumper
wires as follows.
The BR terminal to O terminal
The NK terminal to O terminal