EMG 91 Service manual

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.
© 2010 Copyright EMG INC. All Rights Reserved.
PO BOX 4394
SANTA ROSA, CA
95402 USA
P [phone]
F [phone]
EMGPICKUPS.COM
0230-XXXXX
*Note: Magnet Type: A (Alnico) C (Ceramic)
2.750
1.500 (38.1)
(86.3)
.430 MAX (TYP .400)
(10.9)
.527 MAX (TYP .500)
(13.4)
INSTALLATION INFORMATION
EMG MODELS: EMG-91
ABOUT THE EMG-91:
Their are several benefits to using an active pickup for an arch top. Firstly, the pickup can be designed for great tone because output level
is not an issue. In addition, the EMG design insures the pickup is virtually noiseless and doesn’t need string grounding. It is almost impossible
to ground the strings of an arch-top guitar, so the pickup needs to be noiseless in its design.
Mounting:
The EMG-91 is designed as a low-profile pickup for arch-top guitars. Because all arch-top guitars are different, mounting the pickup
is usually unique in most cases. The pickup can be mounted on its bottom surface to a pickguard, or can be mounted with the EMG-91 bracket kit.
It’s best to look over this sheet, as well as the EMG-91 Bracket kit instructions, consider the following options and then proceed.
Power:
The EMG-91 needs to be powered by a 9 Volt battery. This can be accomplished by putting a battery holder in the instrument, or using an inline
external battery box with a stereo cable from the instrument to the battery box and a patch cable from the battery box to the amp.
Volume and Tone Controls:
Some instruments have volume and tone controls mounted to the pickguard, some don’t. Some controls are low-profile, some are not.
Both the Volume and Tone Control for the EMG-91 are 25K Ohm (audio taper).
SPECIFICATIONS: MODEL:
91
Logo Color Silver
Magnet Type * C
Resonant Frequency (KHz) 4.05
Output Voltage (String) 1.00
Output Voltage (Strum) 3.00
Output Noise (60 Hz) -101
Output Impedance (Kohm) 10
Current @9V (Microamps) 80
Battery Life (Hours) 3000
Maximum Supply (Volts DC) 27

Diagram #2
One Pickup
One Volume
One Tone
TIP
RING
SLEEVE
Diagram #4
FROM TONE
OR VOLUME
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
- 9V +
Diagram #5
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.
2
Installation Instructions:
EMG Models: EMG-91
91 Instructions Page 2
Installation (One Pickup Guitars):
1) Plug the pickup cable onto the EMG Pickup header as shown
in diagram #1 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 control only
2) Refer to diagram #2. Plug both the Pickup cable and the output
cable onto the Volume control as shown, then go to step 4.
Master Volume and Tone control
3) Refer to diagram #3. Plug the Pickup cable onto the Volume
control as shown. Plug a coax cable from the Volume control
to the Tone control. Plug the output cable onto the tone
control as shown.
4) Connect the wires of the output cable to the output jack by
pushing the connectors on 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,
and the battery RED wire. 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
T
R
S
PASSIVE
TONE
FROM PICKUP
BATTERY
NEG (-)
RED
RED
BATTERY
BUSS
OUTPUT CABLE
MASTER
VOLUME
- 9V +
Diagram #1
Insert the plug onto the 3 pin header
of the pickup as shown above.
Note the orientation arrow.

1.500
(38.1)
1.000
(25.4)
.500
(12.7)
.250
(6.35)
2.062 (52.37)
.100
(2.54)
D .120
(3.05)
R .062
(1.57)
91 Instructions Page 3