SM Pro Audio M-Patch 4M: Passive Controller/Switcher with Talkback User Manual

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Studio Outputs

The M-Patch 4M has two sets of Studio outputs (balanced and unbalanced), each of

which will carry the input signals chosen by the front-panel Studio 1 and 2 input se-

lector switches. Use these outputs to route your input signals to headphone systems,

to monitoring systems in the recording room, or to any device at which you want the

talkback signal to appear.

Output selector switches

Each of the four outputs can be individu-

ally muted via their corresponding front-panel

MUTE switches. In addition, the Studio 1 and

Studio 2 output levels can be adjusted using the

Studio 1 and Studio 2 rotary volume controls.

These controls can also be used to balance the

volume of the Studio 1 and 2 signals with the

level of the talkback mic.

When talkback is engaged (MIC ON), all output signals are attenuated by -20dB, how-

ever the talkback mic signal only appears at the Studio 1 and 2 outputs.

TalkBACK MICROPHONE

The M-Patch 4M features a built-in talkback system. An internal

microphone is provided on the front panel, or you can plug your

own microphone into the balanced XLR microphone input on

the rear panel. The INT(ernal) / EXT(ernal) switch on the rear

panel determines which microphone is used for talkback.

Pushing the front-panel MIC ON switch engages talkback. It

can also be engaged via a switch plugged into the rear-panel

Mic Remote input.

Talkback level is controlled by the rotary MIC ON volume control. When talkback is

engaged, the signals appearing at the Control Room 1, Control Room 2, Studio 1,

and Studio 2 outputs are attenuated by -20dB. Note, however, that the talkback mic

signal only appears at the Studio 1 and 2 outputs.

Using the M-Patch 4m

You can use M-Patch 4M anywhere you want to trim the voltage of, i.e., reduce the

volume of analog audio signals. Other than its primary use as a professional moni-

toring controller, you could, for example, use the M-Patch 4M to trim the output

of a microphone preamplifier. With its high-quality potentiometers and precision

film-resistor master attenuator, the M-Patch 4M passes signal more accurately

and with far greater transparency than the built-in volume controls found on most

audio equipment.

You can use the MPatch 4M...

•

To A/B between different audio sources

•

As a switcher for multiple monitor systems

v O L U M E

M U T E

H ea d p h o n e

O U T P U T S E L E C T O R

v O L U M E

M -P A T C H 4M

C / R

St u d io 2

S t u d io 1

C / R 1

C / R 2

S T U D IO

C / R

S t u d io 1

S t u d io 2

M ic O N

M U T E

M ic O N

M ic

BL1 BL2

UB1

UB2

BL1 BL2

UB1

UB2

B A L AN C E D

A u x

A l l M U T E

S T E R E O

M O N O

v O L U M E

M U T E

H ea d p h o n e

O U T P U T S E L E C T O R

v O L U M E

M -P A T C H 4M

C / R

S t u d io 2

S t u d io 1

C / R 1

C / R 2

S T U D I O

C / R

S t u d io 1

S t u d io 2

M ic O N

M U T E

M ic O N

M ic

BL1 BL2

UB1

UB2

BL1 BL2

UB1

UB2

B A L AN C E D

A u x

A l l M U T E

S T E R E O

M O N O