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Operating Manual -MX-406 Stereo Microphone/Line Mixer

ground, pin 2 is (+), and pin 3 is (-). This signal is determined by the mono output level control, with a nominal

operating level of +4dBu.

Note: The mono transformer-balanced output is designed to drive up to +24dBu into 600 ohm loads. Because

of the nature of an output transformer, the output level increases as the impedance of the terminating load becomes

higher than 600 ohms. Whereas a "direct-coupled" output stage like that of the right and left outputs will not change

as the load changes, any transformer used in an audio path is affected by its termination impedance. Since line level

inputs on audio devices are typically 10K Ω or higher, expect a slight increase (2.5dB) in output level when driving

conventional active 10K Ω inputs with the transformer outputs.

6.9 Stereo Outputs

The 1/4" jack stereo right and left outputs are controlled by the left and right master. They are pseudo-

balanced TRS jacks with a nominal operating level of +4dBu into any load, and are capable of driving long lines.

6.10 +48V Phantom Power Switch

This switch applies +48VDC to all six XLR mic inputs to power condenser microphones. Phantom power will

not affect most dynamic mics, which may be used along with condenser mics.

7. TYPICAL APPLICATIONS:

7.1 Small Sound Reinforcement System:

In the setup shown here, the MX-406

is used to mix typical sound sources

that might be found in a church, small

club, school theater or similar environ-

ment. Four of the input channels are

used for vocal microphones, while the

remaining two channels are used for

stereo accompaniment tracks. The ste-

reo line input is used for additional

pre-recorded music such as that of a

movie soundtrack or CD player. Ste-

reo line output RCA jacks are used to

record the event to a cassette, video

camera, or even a PC with recording

capabilities.

Stage monitors are fed using the aux

mix to the master aux output, and left

and right outputs drive the main speak-

ers. The mono output drives a 70 Volt

distributed sound system amplifier,

used for plenum (ceiling) speaker in-

stallations.

(Stereo

Line Input)

70 Volt Distributed

Sound System Amp

(Mono

Output)

M odel M X -40 6

M ade In U SA

M ono

Output

Stereo

(Transformer

Stereo

Line

Line Out

Input

Outputs

B al a nced)

Aux

-L-

M aster

Right

+48V

Output

Phantom

CAUTION

Power

Ch.6 Insert

RI S K O F E LE C T RI C SH O C K

Tip=Out Ring=In

DO N O T O PE N

Left

-R-

10 0 -120 VAC

50 -60 Hz 15W

(Stereo

Line Out)

(Aux)

(Stereo

Outputs)

(R)

(L)

MX-406 Small Sound Reinforecement System

VCR, CD, DVD Player

Audio Output

Accompaniment Tracks

Cassette Player

Ch .6

Ch .5

Ch .4

Ch .3

Ch .2

Ch .1

-2 0dB Pad

(Mic Only)

M ic/ L ine I n put

Ch.5 Insert

Ch.4 Insert

Ch.3 Insert

Ch.2 Insert

Ch.1 Insert

Tip=Out Ring=In

Monitor

Amplifier

EQ,

Main

Right

Limiter,

Crossover,

Amplifier,

Main

etc.

Left

Four Vocal

Mic Inputs

MX-406

Microphone

(+)

(-)

Mixer

Recording

Device