AUSTRALIAN MONITOR SM12 Bedienungsanleitung

STEREO MIC/LINE MIXING CONSOLES

OPERATION MANUAL

SM12 & SM16

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SM12 & SM16 OPERATION MANUAL PAGE 3

INTRODUCTION AND CONTENTS

The Australian Monitor Pro Series SM12 and SM16 stereo

console mixers are designed to be compact, ultra low noise and

feature packed.

With a mixture of mono channels featuring balanced XLR or TRS inputs

and switchable 48V phantom power, and stereo channels all boasting

3 stage EQ and pre and post fader auxiliary sends, the SM series

mixers are as versatile as they are cost effective.

The SM Series mixers feature peak LED indication and low cut

filters on all mono channels, high quality 60mm faders and sealed

potentiometers, 19 inch rack mount kit and accurate 10 segment bar

graph meters for the stereo output buss.

The Australian Monitor Pro Series SM12 and SM16 give the audio

professional a sonically superior mixing console offering a feature set

and versatility usually found in mixing consoles many times their price.

INTRODUCTION 3

MONO CHANNELS 4

STEREO CHANNELS 5

MASTER SECTION 6

REAR PANEL 7

OPERATION 8

BLOCK DIAGRAM 9

SPECIFICATIONS 10

This symbol is intended to alert the user to the presence

of uninsulated “dangerous voltage” within the product’s

enclosure that may be of sufficient magnitude to

constitute a risk of electric shock to persons.

This symbol is intended to alert the user to the presence

of important operation and maintenance (servicing)

instructions in the literature accompanying the appliance.

To prevent electric shock do not use this (polarised) plug

with an extension cord, receptacle or other outlet unless

the blades can be fully inserted to prevent blade exposure.

To prevent electric shock, match wide blade of plug to

wide slot, fully insert.

Caution:

AUS, EUR, USA

Rev A: 17th Oct 2004

SM12_16 1/10/05 8:32 AM Page 3

MIC/LINE INPUT SECTION

MIC

Balanced XLR input

LINE

6.35mm TRS input

LOW CUT FILTER SWITCH

This switch will roll off frequencies below

75Hz at an 18dB per octave slope. This

can be used to eliminate rumble caused

by sensitive lectern mics etc.

GAIN

This is the initial gain control for each

input and should be set to optimise each

inputs level while still leaving headroom

so the input signal does not reach clipping

level. This gain stage has a range from

+10dB to +60dB.

EQ SECTION

HIGH

This is a shelf EQ filter that adjusts treble

frequency levels and will give up to 15dB

of boost or cut at 12kHz. The centre

position will give a flat response.

MID

This mid range EQ control adjusts mid

range frequencies and has a fixed 2

octave bandwidth at 2.5kHz. This control

will give up to 15dB of boost or cut. The

centre position will give a flat response.

LOW

This low frequency shelf EQ control

adjusts bass frequencies and will give

up to 15dB of boost or cut at 80Hz. The

centre position will give a flat response.

AUXILIARY SECTION

PRE

Aux 1 is a mono split of the channel input

signal and is post EQ but pre the

channel fader.

POST

Aux 2 is a mono split of the channel input

signal and is post EQ and post

channel fader.

PAN

The channel pan control is used to posi-

tion the channel signal in the stereo field.

PFL

The Pre Fader Listen (PFL) switch is used

to monitor the input signal before the

channel fader. This can be switched to

either the headphone/local monitor output

or the master left/right outputs

(see master section)

PEAK LED

This red LED illuminates when the

channel is going into overload (clip)

LEVEL

This channel output fader adjusts the

level of the channels signal before it

is sent to the master output buss.

PAGE 4 SM12 & SM16 OPERATION MANUAL

MONO CHANNELS

SM12_16 1/10/05 8:32 AM Page 4

SM12 & SM16 OPERATION MANUAL PAGE 5

STEREO CHANNELS

LINE INPUT SECTION

LINE L/R

These 6.35mm TRS jacks will accept

either balanced or unbalanced line

level signals. For mono operation use

left input only.

EQ SECTION

HIGH

This is a stereo shelf EQ filter that adjusts

treble frequency levels and will give up to

15dB of boost or cut at 12kHz. The centre

position will give a flat response.

MID

This stereo mid range EQ control adjusts

mid range frequencies and has a fixed

2 octave bandwidth at 2.5kHz. This

control will give up to 15dB of boost or

cut. The centre position will give a flat

response.

LOW

This low frequency stereo shelf EQ

control adjusts bass frequencies and will

give up to 15dB of boost or cut at 80Hz.

The centre position will give a flat

response.

AUXILIARY SECTION

PRE

Aux 1 is a mono split of the channel

input signal and is post EQ but pre the

channel fader.

POST

Aux 2 is a mono split of the channel

input signal and is post EQ and post

channel fader.

PAN

The channel pan control is used to

position the channel signal in the stereo

field. This differs from the mono channels

as this pan control will determine the level

of either the Left or Right buss that is sent

to the master mix. For example if the pan

control is turned fully clockwise, only the

Right signal path will be sent to the

master mix. If the Left input only is

connected (a mono signal) the pan control

will work as per the mono channels.

PEAK LED

This red LED illuminates when the

channel is going into overload (clip)

PFL

The Pre Fader Listen (PFL) switch is used

to monitor the input signal before the

channel fader. This can be switched to

either the headphone/local monitor

output or the master left/right outputs

(see master section)

LEVEL

This Channel output fader adjusts the

level of the channels signal before it

is sent to the Master output buss.

SM12_16 1/10/05 8:32 AM Page 5

LOCAL MON

These TRS 6.35mm jacks provide a stereo

output that can be sent to a local monitor

amp and speakers for control room or bio

box monitoring of either the PFL buss or

the master output buss.

HEADPHONES

This a monitor output for headphones.

This outputs signal will follow whatever is

assigned to the Local Monitor output.

AUX RETURN 1/2

These controls adjust the level of the stereo

auxiliary returns. Both Aux Return 1 & 2 are

permanently assigned to the Master Mix.

HEADPHONE/LOCAL MONITOR LEVEL

This control adjusts the output level of the

Local Monitor outputs and the Headphone

output. This level is independent of

the Master Mix.

POWER LED

This LED indicates that the mixer is "on"

+48V

This LED indicates that 48 volt phantom

power is active.

L/R OUTPUT METER

The Master Output level is displayed on

these 10 segment Bar Graph peak meters.

MASTER/PFL TO LOCAL MONITOR

This switch determines whether the Master

mix signal or the PFL signal will be sent to

the Local Monitor/Headphone output.

TAPE/REC TO MASTER

This switch determines whether a tape or

other stereo source connected to the

Tape In RCA connectors is sent to the

Master Mix.

MASTER OUTPUT

This fader controls the master output level of

both the Left and Right busses to the master

XLR and TRS outputs of the mixing console.

MASTER SECTION

STEREO AUX RETURNS 1/2

These 2 additional stereo inputs can be

used for the return of stereo effects

units such as reverb or delay units and

are permanently assigned to the Master

Mix. These can also be used as extra

line level inputs and can be mono if only

the left input is used.

AUX SEND 1/2

These unbalanced 6.35mm jacks can

be used to send the output of each

channels Aux sends to effects devices

such as reverb or delay units.

L/R TAPE IN

These stereo RCA connectors allow

connection of a tape deck, CD/DVD

player etc to the mixer and are routed to

the Master Mix.

L/R RECORD OUT

These stereo RCA connectors allow for

a tape deck or digital recorder to be

connected to mixing console for

recording the output of the Master Mix.

36 3734 35

PAGE 6 SM12 & SM16 OPERATION MANUAL

SM12_16 1/10/05 8:32 AM Page 6

REAR PANEL

INSERTS 1-4 (1-8 ON THE SM16)

An insert point is provided for each

Mono Channel on the SM12 and SM16

mixing consoles. These insert points are

a split of the channels input signal

which is post input gain and Low cut

filter with the return path pre EQ. These

inserts are 6.35mm TRS sockets with Tip

being send and ring being return. Tip = Send, Ring = Return

41 42

39 40

SM12 & SM16 OPERATION MANUAL PAGE 7

POWER

This switch turns mains power "on" to

the mixer

AC POWER

This is the connection for the supplied

AC power supply.

Please use supplied mains

power supply only. Always

connect the power supply to the

mixer before connecting to the

mains supply.

PHANTOM

This switch turns 48 volt phantom power

"on" to all mono channels. Phantom

power is required for Electret or

Condenser style microphones

STEREO OUT

Both balanced XLR and 6.35mm TRS

jacks are included and provide Stereo

mix output at the level set by the Master

output fader. Both sets of outputs can

be used simultaneously.

SM12_16 1/10/05 8:32 AM Page 7

PAGE 8 SM12 & SM16 OPERATION MANUAL

OPERATION

Before connecting any input sources to your SM12 or SM16 stereo

console mixer, please make sure the following initial settings are correct.

• All gain controls and faders are set to minimum

• All Auxiliary sends are set to minimum

• EQ is set flat (i.e. in centre position)

• Ensure the power supply is correctly connected

• No PFL’s are active

Connect mic or line source to desired channel inputs (make sure

phantom power is switched on if required) and ensure Master Outputs

are correctly connected to your audio system.

Set the Master Output to unity gain (set to "0")

Turn up the input gain for your selected channel to 12 O’clock

(half way)

Generate input signal

(i.e. voice for a microphone, play background source etc)

Ensure the selected channels Peak LED is not illuminating

Raise the selected channels fader till the desired level is achieved

The L/R Output meter should be continuously metering at up to 0dB

with any transient signals not exceeding the +6dB indicator.

Adjust input gain stage to ensure correct gain settings

EQ input signals as required remembering that boosting frequencies

will add to the signals gain.

Repeat for remaining channels

NOTE: A full discussion of setting up a complex system with

correct gain structure is beyond the scope of this manual.

The procedure above assumes that the installer has

correctly set up external equipment connected to this

mixer prior to initiating the setup procedure.

☛

SM12_16 1/10/05 8:32 AM Page 8

SM12 & SM16 OPERATION MANUAL PAGE 9

BLOCK DIAGRAM

SM12_16 1/10/05 8:32 AM Page 9

PAGE 10 SM12 & SM16 OPERATION MANUAL

SPECIFICATIONS

MONO INPUTS

Mic Input Electronically balanced, discrete input configuration

Bandwidth 10Hz to 60kHz ± 3dB

Distortion (THD & N) 0.01% at +4dBu, 1kHz, Bandwidth 80kHz

Mic E.I.N. (22Hz - 22kHz) -129.5dBu, 150Ωsource

-117.3dBqp, 150Ωsource

-132.0dBu, input shorted

-122.0dBqp, input shorted

GAIN range +10dB to +60dB

Line Input Electronically balanced

Bandwidth 10Hz to 60kHz ±3dB

Distortion (THD & N) 0.01% at +4dBu, 1kHz, Bandwidth 80kHz

Line Level Range +10dBu to -40dBu

Equalisation

Hi Shelving 12kHz ±15dB

Mid Range 2.5kHz ±15dB

Lo Shelving 80Hz ±15dB

STEREO INPUTS

Line Input Unbalanced

Bandwidth 10Hz to 55kHz ±3dB

Distortion (THD & N) 0.01% at +4dBu, 1kHz, Bandwidth 80kHz

Equalisation

Hi Shelving 12kHz ±15dB

Mid Range 2.5kHz ±15dB

Lo Shelving 80Hz ±15dB

MASTER MIX SECTION

Max. Output +22dBu Balanced

Aux. Send Max. Out +22dBu Unbalanced

Control Room Out +22dBu Unbalanced

Signal-to-Noise Ratio 112dB, all channels at Unity Gain

POWER SUPPLY (mains voltages)

USA/Canada -115VAC, 60Hz, power supply unit MXUL2 (included)

Europe/Australia -230VAC, 50Hz, power supply unit MXUK2 (included)

PHYSICAL

SM12

Dimensions (H x W x D) 70mm x 293mm x 344mm

Net Weight 3.6kg (PSU not included)

Gross Weight 5.8kg

SM16

Dimensions (H x W x D) 70mm x 399mm x 344mm

Net Weight 5kg (PSU not included)

Gross Weight 8.0kg

SM12_16 1/10/05 8:32 AM Page 10

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