EMG 707-TW-X Service manual

.390
(10)
(6)
(8)
.235
.310
INSTALLATION INFORMATION
EMG MODEL: 707-TW-X
Warranty
All EMG Pickups and accessories are warranted for a period of two years. This warranty does not cover failure due to improper installation, abuse or damage. If
upon examination the pickup is determined to be defective, a replacement will be made. Warranty replacement products are covered by this same warranty. This
warranty covers only those pickups and accessories sold by authorized EMG Dealers. This warranty is not transferable.
© 2016 Copyright EMG INC. All Rights Reserved.
PO BOX 4394
SANTA ROSA, CA
95402 USA
P [phone]
F [phone]
EMGPICKUPS.COM
0230-0144rD
B136rE
SPECIFICATIONS: MODEL:
707-TW-X Single-Coil Dual-Coil
Logo Color* Copper
Magnet Type Alnico
Resonant Frequency (KHz) 4.44 1.83
Output Voltage (String) 2.00 3.00
Output Voltage (Strum) 3.00 8.50
Output Noise (60 Hz) -107 -109
Output Impedance (Kohm) 2.00 2.00
Current @9V (Microamps) 160
Battery Life (Hours) 1500
Maximum Supply (Volts DC) 27
Installation notes:
EMG-X Series Pickups are compatible with all EMG Active Pickups. They use the connector system for easy installation, avoiding the need to solder.
Included with the TW-XSeries Pickups as the VLPF Active Tone Control. This means the Push/Pull Pot will not be used as a tone control.
When using a selection switch, refer to the included B245 Pickup Buss Instructions for a detailed explanation of the Buss.
OUTPUT CABLE 6” (15cm)
2 CONNECT CABLES 5.5” (14cm)
BATTERY CABLE 7” (18cm)
B245
SUPPLY CABLE 5.5” (14cm)
3.500
1.500
3.250
.880
.750
(88.9)
(38.1)
(22.3)
(19.0)
(82.5)
X-SERIES
- 9V +
BATTERY
BUSS
STEREO OUTPUT
JACK
ADJUSTMENT SCREWS
1 VLPF ACTIVE
TONE CONTROL (25K) 2 PICKUP IN/ OUT
BATTERY BUSS
EMG-707-TW-X (SIDE VIEW)
In Dual-coil mode, coils C1 and C2 are active.
In Single-coil mode, coils C2 andC3 are active.
C1 C2
C3
TW PICKUP CABLE 15” (38cm)
MAXIMUM RECOMMEMDED STRING WIDTH 2.62" (66.5)
R .125
(3.17) TYP
.125 (3.17) DIA. MOUNTING HOLES
Included with each pickup:
1 TW P/P SWITCH
W/POT (25K)

TIP
RING
SLEEVE
Diagram #5
FROM TONE
OR VOLUME
SHUNT ON (H6)
PICKUP OUTPUT (H5)
MASTER VOLUME
OUTPUT (H3)
MASTER VOLUME
INPUT (H1 OR H2)
Diagram #4
PUSH / PULL POT USED AS
THE MASTER VOLUME CONTROL
TO SELECTION SWITCH
(VIA B157 BUSS)
OR PAN-POT
PICKUP OUTPUT
(H1 or H2)
INSTALL SHUNT (H6)
INSTALL SHUNT (H4)
Diagram #3
PUSH / PULL POT USED AS
THE PICKUP VOLUME CONTROL
OR TO THE OUTPUT JACK IN SINGLE
PICKUP GUITARS WITH NO TONE
CONTROL
PICKUP OUTPUT:
TO TONE CONTROL OR
SELECTION SWITCH OR BUSS
FOR 2 OR 3 PICKUP GUITARS
B136rE
General Notes:
Every attempt has been made to make this a solderless installation.
There are some instances where this is not possible;
1) If your instrument uses the long panel output jack and you had passive pickups
you will need a new stereo output jack, the Switchcraft 152B is recommended.
Soldering to the new jack will be required, see diagram #5 below.
2) Some instruments may already have a battery holder installed and in that case
soldering may be required, see the diagram at the bottom of page 3.
3) Instruments with two pickups may need soldering to the selection
switch in some installations.
Installation Instructions:
EMG Models: EMG-707-TW-X
707-TW-X INSTRUCTIONS Page 2
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
Using the 707-TW-X Push-Pull Pot
The Push-Pull Pot included with the EMG-707-TW-X allows you to choose between
two internal pickups, single-coil and dual-coil. The Push-Pull Pot has two seperate
sections described below.
Refer to diagrams #1 and #2
1) The push-pull pot has a switch section (DPDT) that lets you choose
between the single-coil sound and a dual-coil sound by pulling or pushing
the pot shaft up or down. You have the option of having the single-coil
sound in either the up or down position and the same for the dual-coil sound.
Diagrams #1 and #2 show how to connect the 707-TW-X pickup cable to choose
either option. Select the diagram that suits you and push the cable
connectors onto the single line 6 pin header.
Simply flip cable connectors 1 and 2 to change the wire order and this
will choose between the two options.
Connector 3 remains the same for either choice.
Refer to diagrams #3 and #4
2) The pot section (25KA) can be used either as a volume control
for the pickup or, it can be used as the master volume for the guitar.
Diagrams #3 and #4 show how to connect either opition.
Use the dual-line 10 pin header and push the cables on and
install the shunts as needed onto the labeled headers H1 thru H6.
Use diagram #3 if you have a single 707-TW-X installed in your instrument,
or have two or more pickups in your instrument and want to use the pot as the
volume control for the 707-TW-X Pickup.
Installing the shunts on positions H4 and H6 sends the pickup signal
to the wiper of the 25K Pot, and the output of the 25K Pot is at position H1.
Diagram #4 allows you to use the 25K Pot independently of the pickup output.
By taking the output of the pickup from position H5, the volume control is now
available to use as a master volume with H1 and H2 being the input and/or output
of the volume control. H1 and H2 positions are interchangeable.
Position H5, now the output of the pickup, would typically go to a selection switch
or a pan-pot. Don’t forget to install the shunt on H6.
Diagram #1
HUMBUCKING ON: DOWN POSITION
SINGLE COIL ON: UP POSITION
Diagram #2
SINGLE-COIL ON: DOWN POSITION
HUMBUCKING ON: UP POSITION
FLIP CONNECTORS 1 AND 2
AS SHOWN
WIRE ORDER:
WHITE
GREEN
BLUE
YELLOW
ORANGE
SHIELD
WIRE ORDER:
GREEN
WHITE
YELLOW
BLUE
ORANGE
SHIELD
- 9V +
1
2
3
1
2
3

Diagram #7
One TW-X Pickup
One Master Volume Control
No Tone Control
Diagram #10
Diagram #9
MASTER ACTIVE TONE
(VLPF)
NOTE:
REVERSED CONNECTOR
707-TW-X INSTRUCTIONS Page 3
Solder the RED wire from the Battery Holder and/or
pickups and re-insert the Header into the insulation cover
13
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.
Installation (One Pickup Guitars):
1) Plug the pickup cable onto the EMG Pickup header as shown
in diagram #6 and route the cable to the control cavity.
If the cable is too long, wind up the excess and keep it
under the pickup if possible
Master Volume only.
Refer to diagram #7.
2) Plug the Pickup cable onto the push-pull pot switch section using
the option chosen from diagram #1 or #2.
Plug the output cable onto the H1 position of the push-pull pot
section as shown in diagram #7 and be sure the shunts are
installed on header positions H3 and H5. No shunts on H2 and H4.
Skip to step 4.
1 TW-X with a Master Volume and VLPF Active Tone control
Refer to diagram #8.
3) Install the VLPF Active Tone included with the TW-X Pickup.
Plug a coax cable from the push-pull pot to the VLPF Active
Tone Control. (Note the reversed connnector on pins 1 and 2).
Insert the output cable onto the Tone control as shown
(Pins 3 and 4).
4) Connect the output wires to the output jack by pushing
the connectors onto the jack as shown.
WHITE wire to the TIP (T) contact,
BLACK wire to the SLEEVE (S) contact
BLACK Battery Negative wire to the RING (R) contact.
5) Using the battery buss, insert the RED wire of the pickup,
the battery RED wire, and the RED wire from the VLPF onto
any of the pins. Extra pins can be used for EMG Accessories.
6) Put the battery in the insulating foam piece provided
and place it securely in the control cavity.
We suggest that you plug in the instrument and
test it before closing the control cavity.
OUTPUT CABLE
OUTPUT
T
R
S
BATTERY
NEG (-)
RED
RED
BATTERY
BUSS
OUTPUT
T
R
S
BATTERY
NEG (-)
BATTERY
BUSS
OUTPUT CABLE
RED
VOLUME
CONTROL
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 and use the shrink tubing included
to cover the connections. Soldering the wires is the 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
2
Diagram #6
Insert the plug onto the 7 pin header
of the pickup as shown here.
Note the orientation arrow.
VOLUME
CONTROL
- 9V +
- 9V +
Diagram #8
One TW-X Pickup
One Volume
One Active Tone
RED
RED
FROM 35-TW-X PICKUP
TW-X PICKUP

NOTE REVERSED CONNECTOR
707-TW-X INSTRUCTIONS Page 4
BRIDGE PICKUP
BATTERY
NEG (-)
T
R
S
RED
RED
RED
GROUND
BRIDGE P/U
NECK P/U
OUTPUT
- 9V +
GROUND
BRIDGE P/U
NECK P/U
OUTPUT
Diagram #11
2 Pickups (1 EMG + 1-TW)
Toggle Style Select Switch
Push-Pull Pot as Master Volume
with a Master Active Tone
FROM EMG-TW PICKUP
OUTPUT CABLE
MASTER
VOLUME
MASTER TONE
(VLPF)
Diagram #12
2 TW-X Pickups
2 Push-Pull Pots as Volume controls
(Volumes are independent)
2 Tones(Active)
B245 Buss
Toggle Style Switch
- 9V +
T
R
S
OUTPUT
BATTERY
NEG (-)
RED
RED
RED
OUTPUT CABLE
NECK
VOLUME
EMG-TW PICKUP (NECK)
BRIDGE
VOLUME
EMG-TW PICKUP (BRIDGE)
BRIDGE TONE
(VLPF)
NECK TONE
(VLPF)
NOTE:
REVERSED
CONNECTORS