Trane RX-212 User Manual

Operating Instruction Manual

TOA MIXING CONSOLE

Model RX-208, RX-212, RX-216

RX-208

RX-212

RX-216

TOA ELECTRIC CO, LTD

KOBE, JAPAN

Contents

General Description

Features

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Front Panel, Input Section

Front Panel, Output Section

Meter Panel

Rear Panel

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(RX-208)

(RX-212,

Connection Examples

How to use

How to get a

Channel

"channel patching" accessory jack

good mixing

and

Graphic Equalizers

General Specification

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RX-216)

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Input & Output Specifications

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8~10

13~14

Characteristic Diagrams

Block Diagram

Level Diagram

Dimensional Diagrams

Precautions

1. Each model of the RX-208, RX-212 and RX-216 has two

versions, 120V AC operation only and 220/240V AC operation with a voltage selector. The voltage selector on the rear panel of the 220/240V version should be check for proper setting prior to operation as improper setting causes trouble. The voltage selector is set for 240V operation at the factory.

2. Power Switch

The power switch should be on after all connections have been completed.

3. XLR (Cannon) Connectors

The connectors are wired in the following manner: Pin 1 is ground (shield); pin 2 is cold (low, minus); pin 3 is hot (high, plus).

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VOLTAGE SELECTOR

AC220V AC240V

4. Description of components and functions on the RX-208, RX-212 and RX-216.

In our Operating and Instruction Manual explanation of components and functions is made according to our usage for them.

- 1 -

General Description

The RX-208, 212 and 216, are mixing consoles with 8, 12 and 16 inputs respectively, 2 program outputs, 2 foldback outputs, and 1 echo output. Each input channel and line

output has a balanced, low impedance, transformer-isolated, XLR connector, and an

unbalanced, 1/4" jack. Each input channel includes an accessory send/receive jack for inserting a signal processing device into the signal path, and a phantom power

ON/OFF switch for permitting use of a condenser microphone. An input level switch

and trim control on each input channel are provided to permit optimum settings. A four-band equalizer is included on each input channel. A peak indicator LED on each

input detects excessive inputs and helps avoid clipping. A pan control on each input

channel assigns the fader output signal of the channel to programs L and R. A cue switch on each input channel, stereo input, aux/echo input, program output, foldback

output and echo send allows monitoring the respective, pre-fader (pre-volume)

signals through the phones output. All faders are log-linear type with 60mm of travel. Additional stereo inputs are used to connect a stereo playback deck, disk player and

other auxiliary equipment. Two independent foldback outputs are included, (pre-

fader, pre-EQ) signals. An analog, electronic echo is built in, but can be bypassed (via

Echo Send/Return for external delay, reverb or special effects). Dual Graphic

Equalizers (1/1 octave, 9 bands) are switchable to either the program outputs or

foldback outputs. A fluorescent bargraph peak meter (2-color, vertical type) monitors

the outputs of the programs L and R, and foldbacks 1 and 2. These consoles are designed for use in professional sound reinforcement systems, and provide versatile

functions to meet a wide range of requirements. The high performance and modular construction assures reliability, easy maintenance, and serviceability.

Features

1. Balanced, low impedance, (transformer-isolated) XLR connector with an

2. An accessory send/receive jack on each input channel.

3. A phantom power switch on each input channel.

4. Input level switch and trim control on each input channel.

5. Four-band equalizer on each input channel.

6. Peak indicator LED on each input channel.

7. Cue switch on each input channel, stereo input, aux/echo input, program output,

8. All faders are log-linear type with 60mm travel.

9. Built-in, electronic analog echo unit.

10. Dual graphic equalizers (1/1 octave, 9 bands) are switchable to either the program

unbalanced 1/4" jack on each input channel and line input.

foldback output and echo send.

or foldback outputs.

11. Additional, stereo inputs for connecting a stereo playback deck, disk player and

other auxiliary equipment.

12. Fluorescent bargraph peak meters for monitoring the programs L and R, and

foldbacks 1 and 2.

- 2 -

Front Panel, Input Section

Peak Indicator

The peak indicator lights if clipping occurs in the pre-amp stage of the corresponding input channel. When the light comes on, an adjustment must be made with the Input Level Selector

Switch and/or the Input Trim control.

Input Level Selector Switch (INPUT)

Selection is made in accordance with the output of the microphone or other equipment

connected to each input channel (XLR connector and phone jack). (—20, —40 and —60) dB

indicates the input sensitivity of the XLR connector input when the trim control is set at the "0"

position. The "UN-BAL" position permits using the phone jack input. The unbalanced input sensitivity is —30dB when the trim control is set at the "0" position.

Input Trim Control (TRIM)

The input trim varies the gain of the pre-amplifier stage of each input channel, providing a

continuously variable control of gain in the range of 0 to —30dB from the input level switch position. For instance, with the input level selector switch set at —60dB, the variable range is

between -60dB and -30dB.

High Equalizer Control (HIGH EQ)

The high control in each input channel alters the frequency response of the channel input,

allowing a variety of high frequency characteristics. The high control provides ±15dB of continuously variable shelving equalization at 10kHz, having flat audio response at the detented "0" position.

High-Mid Equalizer Control (HI-MID EQ)

The high-mid control provides ±15dB of continuously variable peaking equalization at 3kHz.

The detented "0" position is flat.

Low-Mid Equalizer Control (LOW MID EQ)

The low-mid control provides ±15dB of continuously variable peaking equalization at 300Hz,

having flat audio response at the detented "0" position.

Low Equalizer Control (LOW EQ)

The low control provides ±15dB of continuously variable shelving equalization at 100Hz,

having flat audio response at the detented "0" position.

Foldback Control 1 (FB 1)

The Foldback 1 control assigns the pre-equalizer, pre-fader input signal to the foldback 1

mixing bus. This control is used to route the input signal to stage monitor systems.

Foldback Control 2 (FB 2)

The Foldback 2 control assigns the pre-equalizer, pre-fader signal to the foldback 2 mixing bus.

Echo Control (ECHO)

The echo control assigns the post-equalizer, post-fader signal to the echo bus.

Pan Pot

(PAN)

This control assigns the fader output signal of the channel to the Program L, R mixing busses.

At the center position, the pan pot routes the signal equally to the L and R mixing busses.

Panning from one side to the other gradually assigns the input signal to either the Program L or

R mixing busses exclusively.

Writing Block

The name of the input equipment or microphone setting can be written in with an eraseable

felt pen or a wax pencil.

Input Fader

The fader provides continuously variable adjustment of the channel's output to the program L

and R mixing busses, and to the echo mixing bus. The nominal level is at the "0" position, with

the fader retaining a 10dB margin.

Cue Switch (CUE)

The cue switch is for monitoring the post-EQ, pre-fader signal in each input channel through headphones. The switch is a "push-on push-off type. When more than two switches are "on",

the signals are combined.

- 3 -

Front Panel, Output Section

FB 1 Volume Control (FB1)

This control attenuates the echoreturn signals from the built-in echo or an external echo unit and assigns

them to the FB 1 mixing bus.

FB 2 Volume Control (FB2)

This control attenuates the echoreturn signals from the built-in echo or an external echo unit and assigns

them to the FB 2 mixing bus.

Stereo Input Switches (INPUT)

Each switch has two positions, aux and phono. The aux position accepts

line level signals such as tape

recorders. The phono position provides direct input and RIAA equalization for a turntable.

FB 1 Volume Control (FB1)

This control attenuates the stereo input signals, mixes them to a monaural signal, and assigns them

to the FB 1 mixing bus.

FB2 Volume Control (FB2)

This control attenuates the stereo inp ut signals, mixes them to a

monaural signal, and assigns them

to the FB 2 mixing bus.

Balance Control (BALANCE)

This control adjusts the level

balance of the stereo input signals

fed to the program L & R mixing

busses.

The name of the input equipment can be written in with an eraseable

felt pen or a wax pencil.

Stereo Input Volume Controls

These controls adjust the level of the

stereo in 1 and 2 signals to be fed to

the program L and R mixing busses.

The cue switch is for monitoring the pre-fader signal in each stereo input

channel through headphone. This

feature is useful for cueing the start

of a tape or record.

The name of the input equipment or

microphone setting can be written in

with an eraseable felt pen or a wax

(STEREO 1, STEREO 2)

Writing Block

Cue Switch (CUE)

Writing Block

pencil.

Program Fader L and R

(PGM

The program faders control the

overall signal level of the program

mixes which are fed to the program

L & R outputs, and thus the output

level of the assigned intern al power

L, PGM R)

amplifier.

The cue switch is for monitoring the pre-fader program signals through headphone. This is useful for independent audition of the

Cue Switches (CUE)

program mixes.

Echo Time Control (T1 DELAY)

This control permits continuously variable adjustment of the echo time

in either short or long ranges. The

short range is from 14m to 40m

seconds; the long range is from 40m

to 140m seconds.

Echo Time Switch

The switch changes the echo time to

(SHORT, LONG)

either the short or the long range.

Regeneration Control (T2 REGEN)

The T2 control is provided to adjust the echo pattern (number of repeats) of the internal analog delay.

Headphone Jack

The headphone jack will accept any

stereo headphone with 8 ohms

impedance, or higher.

Phones Level Control (PHONES)

The phones level control adjusts both the program L and R signals fed

to the phones output and permits

stereo monitoring when the cue switch is off. When the cue switch is on, the control adjusts the corres-

ponding cue signal. When two or

more of the cue switches are on, the control adjusts the corresponding

combined cue signals.

Pan Pot

(PAN) The pan pot control assigns the signals from the built-in echo or external echo unit to the program L

and R.

Echo Return Volume Control

(ECHO RETURN)

This control sets the signal level from the built-in echo or from an external echo unit and sends it

(through the pan control) to the pro-

gram L and R.

Echo Send Volume Control

(ECHO SEND)

This control is provided to adjust the overall signal level of t he echo mix t o the echo send outp u t, or to the internal analog delay.

Cue Switch (CUE)

The cue switch is used for monitor-

ing the signal prior to the Echo/Send volume control.

Cue Switch (CUE)

The cue switch is used for monitor-

ing the signal prior to the Echo/Return volume control.

FB Fader 1 and 2 (FB1, FB2)

These faders control the overall

signal level of the mixes which are fed to FB outputs 1 and 2.

Cue Switch (CUE)

The cue switch is used for monitor-

ing the signals prior to the FB 1 and 2 outputs.

- 4 -

Meter Panel

RX-208, RX-212

Graphic Equalizer (EQUALIZATION)

Two channel, 1/1 octave graphic equalizer

with 9 bands (filters) enables 12dB of boost

and attenuation at each center frequency

with the "0" position of each filter providing

flat response. The graphic equalizer is

switchable to either the program or foldback outputs, or "off for A-B comparison.

Graphic Equalizer Selector Switch

(PGML, FB 1, OFF)

The 3-position switch assigns the equalizer

to either the program L or FB 1 circuits, with

the "off" position completely removing the equalizer from the signal flow path.

Program L Output Meter (PGM L)

The meter indicates the program L ou tput level.

Program R Output Meter (PGM R)

The meter indicates the program R output

level.

FB 1 Output Meter (FB 1)

The meter indicates the FB 1 output level.

FB 2 Output Meter (FB 2)

The meter indicates the FB 2 output level.

Graphic Equalizer Selector Switch

(PGM

R, FB 2,

The 3-position switch assigns the equalizer

to either the program R or FB 2 circuits, with

the "off" position completely removing the

equalizer from the signal flow path.

OFF)

Caution

The graphic equalizer is normally used for either the PGM or FB mix. For normal operation, only one

button should be pressed. If the equalizer is not being used, the "OFF" button should be depressed.

RX-216

*The RX-216 is the same in its meter panel functions as the

RX-208 and RX-212.

Graphic Equalizer (EQUALIZATION)

FB 2 Output Meter

FB 1 Output Meter

Program R Output Meter

Program L Output Meter

Graphic Equalizer Selector Switch

(PGM

L, FB 1,

off)

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Graphic Equalizer Selector Switch

(PGM

R, FB 2,

off)

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