Chandler Limited TG12345 MKIV User manual

For more information, visit www.chandlerlimited.com. © 2017 Chandler Limited, Inc. All Rights Reserved. UM TGMK-120117
Abbey Road Studios, EMI, TG, Curve Bender and their associated logos are trademarks of EMI (IP) Limited.
CHANDLER LIMITED®
TG12345 MKIV
USER MANUAL
OFFICIAL
EQUIPMENT
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OUT
500
800
1.2 1.8
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6.5
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12345
BASS
PRESENCE
EQ PUSH
90Hz
MKIV
IN

For more information, visit www.chandlerlimited.com. © 2017 Chandler Limited, Inc. All Rights Reserved. UM TGMK-120117
Abbey Road Studios, EMI, TG, Curve Bender and their associated logos are trademarks of EMI (IP) Limited.
TG12345 MKIV
INTRODUCTION ------------------------------------------------- 3
TG12345 MKIV------------------------------------------------- 3
History ------------------------------------------------------ 3
SHIPMENT AND STORAGE ----------------------------------------- 4
Packaging ----------------------------------------------------- 4
INSTALLATION -------------------------------------------------- 5
Enclosure Compatibility ------------------------------------------- 5
Power ------------------------------------------------------- 5
Audio Input & Output Connections ----------------------------------- 5
OPERATING INSTRUCTIONS --------------------------------------- 6
Presence ----------------------------------------------------- 6
Bass -------------------------------------------------------- 6
Utility Cluster-------------------------------------------------- 6
EQ In ------------------------------------------------------- 6
Push 90 Hz---------------------------------------------------- 6
SERVICE -------------------------------------------------------- 7
United States -------------------------------------------------- 7
International -------------------------------------------------- 7
CE CERTIFICATION ----------------------------------------------- 7
PRODUCT LIMITED WARRANTY ------------------------------------ 8

3UM TGMK-120117
OFFICIAL
EQUIPMENT
INTRODUCTION
TG12345 MKIV
Thank you for purchasing the Chandler Limited TG12345
MKIV EQ module, you now own a piece of EMI/Abbey Road
Studios ocial equipment.
The TG12345 MKIV, inherits from Chandler Limited’s TG Mi-
crophone Cassette and agship TG12345 Curve Bender EQ,
and draws its heritage from the equalizers found in the his-
toric EMI/Abbey Road Studios TG12345 recording consoles
of the late ‘60s and ‘70s.
The TG12345 MKIV 500 Series equalizer module derives its
model name from the last of the great TG12345 consoles,
the Mk. IV desk, and delivers legendary TG sound to the 500
Series format.
The TG12345 MKIV equalizer, accompanied by the TG2-500
Pre Amp and TG Opto compressor form a complete TG
channel strip for the 500 Series format.
Your Chandler Limited TG12345 MKIV has been carefully
crafted and built by hand at Chandler Limited’s factory in
Shell Rock IA, U.S.A., using through-hole components for,
the ultimate analog experience.
At Chandler Limited we are proud of our American made
products and we hope you like them!
Please feel free to call our shop anytime for help or ques-
tions.
Phone: [phone].
History
Conceived from meetings in 1967 between Abbey Road
and EMI’s Central Research Laboratories teams, the EMI
TG12345 Mark I desk ushered in a sea of change in sound
and exibility at Abbey Road Studios.
Installed in Abbey Road’s Studio Two in November 1968 and
making its debut on an 8-track recording by the Shadows, the
new transistorized desk marked a departure from the earlier
REDD valve consoles.
The EMI TG12345 desks had EQ on the microphone, group
and main cassette channels. Compared to the REDD con-
soles, the TG desks featured expanded EQ, and for the rst
time ever, a compressor/limiter on every microphone and
group cassette channel.
The EMI TG12345 desk helped shape the sound of the Bea-
tles’ nal album, “Abbey Road,” which was markedly richer
sounding to that of the band’s earlier work. The sonic quali-
ties of classics like “Here Comes the Sun,” “Come Together”
and “Something” would have been very dierent without the
EMI TG12345.
The desk encountered many revisions throughout the ‘70s
and became the main recording console used throughout the
studios until 1983. The EMI TG12345 console Marks I–IV
were used on everything from Pink Floyd’s "The Dark Side
of the Moon" and "Wish You Were Here" to John Lennon’s
"Plastic Ono Band," George Harrison’s "All Things Must Pass,"
to epic lm scores including Raiders of the Lost Ark.

4UM TGMK-120117
CARDBOARD
CARTON
CUTOUT FOAM
SURROUND
SHEET OF
FOAM
SHEET OF
FOAM
SHIPMENT AND STORAGE
Packaging
This packaging has been designed specically for Chandler Limited equipment. The cardboard carton and foam provide pro-
tection for shipment and storage. Please retain the container and associated materials for future use.

5UM TGMK-120117
INSTALLATION
Enclosure Compatibility
Developed by API®, the 500 Series format is a widely ac-
cepted standard, and many rack enclosure options are avail-
able from third-party manufacturers; however, their build
and power section design may vary.
The TG12345 MKIV adheres to the 500 Series format stan-
dard, and has no known issues with existing format conform-
ing rack enclosures.
Recommendation: We recommend using a 500 Series rack
enclosure with an external power supply, such as the API®
500V with L200 power supply.
Note: For all BAE racks, we recommend adding a wire from
Earth to power supply common. In many cases, hum can
be avoided and Earth to common is standard procedure on
most electronic equipment.
Power
The TG12345 MKIV is powered by means of a 500 Series
format rack enclosure, purchased separately. The TG12345
MKIV module design adheres to the API®500 Series format
current draw specication (+130/-130 mA), and is as fol-
lows:
+16 volts power rail = +105 mA*
-16 volts power rail = -90 mA*
*Maximum current draw as measured when in bypass.
Warning: Never install or remove a 500 Series module while
the rack enclosure is powered on.
Audio Input & Output Connections
The TG12345 MKIV audio connections are transformer bal-
anced, wired pin 2 hot. Audio input and output connectivity
jacks will be provided by the host 500 Series rack enclosure.

6UM TGMK-120117
OPERATING INSTRUCTIONS
The TG12345 MKIV is an adaption of Chandler Limited’s
TG Microphone Cassette EQ section and the acclaimed EMI
TG12345 Curve Bender EQ, both of which are descendant
of the EMI TG12345 recording console and mastering desk
equalizers of the late ‘60s and ‘70s.
Presence
The Presence band incorporates features from the EMI
TG12345 recording console Microphone, Sub Group and Main
Cassette modules.
The Presence or mid band is a combined peaking bell and
shelving type EQ, and has two controls: boost or cut and
frequency selection. The upper control is continuous, allow-
ing for +/-10 dB boost or cut at the frequency selected by
lower rotary switch. The available presence frequencies are
as follows: 500, 800, 1.2, 1.8, 2.8, 4.2, 6.5 and 10 kHz. The
rst seven frequencies are a peaking bell type, and the eighth
is shelving at 10 kHz. The Presence or mid band can be by-
passed independently apart from the Bass band by means of
setting the frequency selection switch to the Out position.
Historical note: The TG12345 MKIV Presence frequen-
cies match those originally available on the Sub Group and
Main Cassettes found in the historic EMI TG12345 desks, and
selectable by means of rotary switch. The historic Presence
control allowed for up to +/10 dB of boost or cut at the
selected frequency. Sub Group and Main Cassettes did not
feature a Bass control.
Bass
This shelving type EQ control is continuous, allowing for
boost or cut of up to +/-10 dB, at a default frequency of
150 Hz, unless otherwise selected by way of the PUSH 90
Hz push-button.
Historical note: The historic EMI TG12345 desk’s Micro-
phone Cassette modules featured Treble and Bass controls,
allowing for boost or cut of up to +/-10 dB, at xed frequen-
cies. The Treble control was a peaking bell type, xed at 10
kHz, while Bass was shelving at 50 Hz.
Utility Cluster
At the bottom of the TG12345 MKIV faceplate exists two
utility push-button switches labeled as follows: EQ IN and
PUSH 90 Hz.
EQ In
The push-button labeled EQ IN, when set inward, inserts the
TG12345 MKIV into the audio path, conversely, when in the
outward position, the equalizer is fully bypassed.
Push 90 Hz
The PUSH 90 Hz push-button modies the Bass control fre-
quency from the default setting of 150 Hz to that of 90 Hz.
When this button is set inward, 90 Hz is the operational fre-
quency aected by the Bass control.
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BASS
12345
BASS
EQ PUSH
90Hz
MKIV
IN
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PRESENCE

7UM TGMK-120117
SERVICE
United States
Prior to sending in equipment for repair, please contact our
shop at the number below. We will assist you in trouble-
shooting, and if needed, we will issue an RMA# to return the
equipment for service.
Send Repairs To:
Chandler Limited, Inc.
Attention: Repairs
222 S. Cherry St.
PO Box 38 (if sending via the postal service)
Shell Rock IA 50670
Phone: [phone]
Email: [email protected]
International
Repair of Chandler Limited products purchased, outside of
the United States, is provided by local or regional authorized
Chandler Limited distributors. To obtain service or repairs,
please contact your local dealer or regional distributor for
further instruction.
Visit chandlerlimited.com for a list of authorized International
Distributors.
CE CERTIFICATION
Chandler Limited declares under its sole responsibility that all
products manufactured by them are in compliance with Elec-
tromagnetic Compatibility (EMC) Directive 2014/30/EU;
Standards: EN55103-1:2009+A1:2012; EN55103-2:2009;
EN55013:2013 and Low Voltage Directive (LVD) 2014/35/
EU; Standards: EN60065:2002+A1:2006+A11:2008+A2:20
10+A12:2011.

8UM TGMK-120117
PRODUCT LIMITED WARRANTY
During the rst year from the date of the original purchase, this product is warranted to be free from defects in materials and
workmanship under normal use, service and maintenance. This warranty applies to the original purchaser and is subject to
the following terms and conditions:
What Is Covered: The product’s components as originally installed by the manufacturer that are defective in materials or
workmanship under normal use, service and maintenance.
What Is Not Covered By This Warranty: This warranty does not extend to or cover:
1. Any defect due to the negligence of others; failure to install, operate or maintain the product properly; unreasonable use; ac-
cidents; alteration; use of unauthorized or non-standardized parts; acts of God; theft; vandalism; electrical malfunctions (i.e.,
resulting from power surges, shorted or overloaded circuits, etc.), use of any power source other than supplied by manufac-
turer; repair by anyone other than an authorized Chandler Limited representative; or damage resulting from improper packing
or mishandling by a shipper.
2. Normal wear and tear of parts.
3. Shipping, handling, packaging and delivery costs of the product.
Who Is Covered: The original purchaser.
Repair During The First Year: During the rst year, all defective product components that are covered by this Limited
Warranty will be repaired free of charge including parts and labor. The purchaser will pay shipping costs AND a $35 handling
fee per unit.
WhatYou Must Do for Warranty Service (in the United States): If you live in the United States and your product
was purchased through a U.S. Dealer, please contact your dealer OR call 319-885-4200 or e-mail support@chandlerlimited.
com.
WhatYou Must Do for Warranty Service (outside of the United States): For warranty service if you live outside
of the United States, please contact the dealer where you purchased the product.
Any products returned to Chandler Limited for repair should include: (1) complete description of the problem; (2) name,
address, phone number, fax number, and/or e-mail address; (3) receipt of original purchase; (4) power supply and all acces-
sories and cables. The purchaser is responsible for the shipping costs to and from Chandler Limited. Chandler Limited is
not responsible for damage resulting from improper packing and/or mishandling by a shipper.
If sent by UPS or Federal Express, ship to: Chandler Limited, 222 South Cherry Street, Shell Rock IA 50670
If sent by Postal Service, ship to: Chandler Limited, PO Box 38, Shell Rock IA 50670
The foregoing expresses Chandler Limited’s obligations and liabilities with respect to the quality of the product, its compo-
nents and accessories. All other warranties, express or implied, including the warranties of merchantability or tness for a
particular purpose are disclaimed. Chandler Limited shall not be liable for the loss or use of the product, its components and
accessories, inconvenience, loss or any other damages, direct or consequences arising out of the use of, or inability to use the
product or its components or damages resulting from or attributable to defects in the products or its components. No one
other than Chandler Limited has authority to extend or modify the terms of this limited warranty in any manner whatsoever.

9UM TGMK-120117
DISCLAIMER OF WARRANTY
EXCEPT FOR THE FOREGOING WARRANTIES, CHANDLER LIMITED HEREBY DISCLAIMS AND EXCLUDES ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO ANY AND/OR ALL IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND/OR ANY WARRANTY WITH
REGARD TO ANY CLAIM OF INFRINGEMENT THAT MAY BE PROVIDED IN SECTION 2-312(3) OF THE UNIFORM
COMMERCIAL CODE AND/OR IN ANY OTHER COMPARABLE STATE STATUTE.
LIMITATION OF LIABILITY
THE LIABILITY OF CHANDLER LIMITED, IF ANY, AND PURCHASER’S SOLE AND EXCLUSIVE REMEDY FOR DAM-
AGES FOR ANY CLAIM OF ANY KIND WHATSOEVER, REGARDLESS OF THE LEGAL THEORY AND WHETHER
ARISING IN TORT OR CONTRACT, SHALL NOT BE GREATER THAN THE ACTUAL PURCHASE PRICE OF THE
PRODUCT WITH RESPECT TO WHICH SUCH CLAIM IS MADE. IN NO EVENT SHALL CHANDLER LIMITED BE
LIABLE TO PURCHASER FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY
KIND INCLUDING, BUT NOT LIMITED TO, COMPENSATION, REIMBURSEMENT OR DAMAGES ON ACCOUNT OF
THE LOSS OF PRESENT OR PROSPECTIVE PROFITS OR FOR ANY OTHER REASON WHATSOEVER.