Chandler Limited Zener Limiter - Manual

The EMI TG12413 Zener Limiter is the ultimate TG limiter issued in celebration of the 75th
birthday of Abbey Road Studios. The Zener Limiter was conceived by Chandler Limited designer
Wade Goeke and is based on the vintage EMI circuits used to record The Beatles and Pink Floyd.
It continues the tradition of EMI Limiters started in 1954 with the RS114 tube limiter and the 1968
RS168 Zener Limiter. The Zener Limiters were also part of the 1969 TG12345 console channel and
the 1974 TG12413. This newest version borrows from the RS168 Zener Limiter and TG12345 console
strip to make a new full featured and flexible unit for modern use.
The Zener Limiter is reissued to add features and flexibility to the powerful and vintage sounding TG limiter
circuits. Wade has added many new controls including switchable input impedance for hard or
soft driving of the unit, 11-position attack, 21-position release, side chain filtering, and Comp 1, Comp 2,
and limit settings.
NOTE ON FRONT PANEL LABELING - You will notice white and yellow markings on the controls
of the front panel. This is not a mistake :-) Because of the new controls and settings added to the
Zener we have used two colors for control labels. White labels designate a setting exactly as it
would have been on a vintage TG unit. Yellow designates expanded selections chosen by Wade.
This way you may accurately recall a standard TG setting or purposely break all the rules.
ZENER LIMITER
Connections - All connections on the Zener are transformer balanced with pin 2 hot.
Power supply - This is designed to be used with Chandler Limited PSU-1 MKII power supply.
The power pin out is as follows:
1) chassis and audio ground
2) 48 volt
3) +28 volt
4) -28 volt
Notes on Grounding - On the back of the power supply are two black banana connectors.
These join the audio ground to earth ground with a solid wire between them. Depending on your
studio you may want this connected or disconnected. Turn up your monitors or headphones a bit
and experiment with which has a lower noise floor in your system. You may also need to join the audio
banana plug to other sections of your studio to obtain lowest noise floor. The audio banana is located
closest to the edge of the power supply case. Use something simple like a guitar cord and touch the
tip to other portions of your studio to find best results. In some cases it may be best to connect a
10 ohm resistor between banana plugs. Please contact the factory for any help in this area.