AMC MMA 120X User Manual Download Page 6

Functions description

FRONT PANEL MICROPHONE INPUT

This  balanced  6,3mm  jack  input  is  in  parallel  to  first  microphone  input  in  the  rear  panel.  The gain  and

phantom power for this input are selected by using gain control knob and phantom power switch located

in the rear panel. Please note: don’t use front and rear first microphone input at the same time.

SLOT FOR

MUSIC SOURCE MODULE

This slot is designed to install music source module to amplifiers. Please find installation manual in page 8.

INPUT VOLUME CONTROL

These rotary knobs are for adjusting volume level of the audio inputs. All balanced XLR inputs are suitable for

line level as well as microphone level audio signals, if corresponding input gain is adjusted. The input gain

control is located in the rear panel.

SIREN AND CHIME SWITCH

There  is  designed  siren and  chime sound  generator  inside  the  amplifier. Press  the  siren or  chime button

located  in  the  front  panel to  activate  it. Audio level  can  be  adjusted  by  using Chime/Siren  level  control

located in the rear panel.

MASTER VOLUME CONTROL

This knob is designed to adjust main volume of the amplifier.

AUX INPUT

This  stereo  3,5mm  jack  input  is  in  parallel  to sixth input  in  the rear  panel.  The gain  potentiometer  are

located in the rear panel.

ALL ZONE SELECTION SWITCH

This switch activates all zones for broadcasting announcement or background music.

ZONE SELECTION SWITCH

These switches controls amplifier’s output in order to broadcast announcement or background music to the
desired zone

.

EQUALIZER

Graphic equalizer allows to adjust sound frequency at 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, and 8kHz points

in ±12 dB range.

POWER SWITCH

Use this switch to power on or off the amplifier. The power LED in the front panel lights up if the amplifier

is powered on.

POWER INDICATOR

This LED indicates status of the main power. The LED lights up if the amplifier is powered on.

SIGNAL INDICATOR

LED in the front panel indicates audio signal of the amplifier.

PROTECT INDICATOR

This LED lights up for a few seconds after the amplifier is powered on and then turns off if the amplifier is

not damaged. It is normal for the protection LED to fade slowly when the amplifier is powered off.

Summary of Contents for MMA 120X

Page 1: ......

Page 2: ...g amplifiers that produce heat 6 The product should be connected to a power supply that is described in the operating instructions or are marked on the product Replace the fuse only with one of the sp...

Page 3: ...Introductions 4 Features 4 Operation Front panel 5 Rear panel 5 Function description 6 Output terminal 9 Controls and connectors Connectors 10 Cable wiring examples 10 Block diagram 13 Specifications...

Page 4: ...nce speaker line variety of microphone and line inputs makes these units universal for any kind of installation Features Six microphone inputs with gain control 3 5mm Jack AUX input Ready to plug in m...

Page 5: ...ain power connector 2 AC fuse holder 3 Antenna connectors 4 100V amplifiers output 5 4 amplifiers output 6 AMP IN and PRE AMP OUT connectors 7 LINK IN and LINK OUT connectors 8 Music on hold volume co...

Page 6: ...el control located in the rear panel MASTER VOLUME CONTROL This knob is designed to adjust main volume of the amplifier AUX INPUT This stereo 3 5mm jack input is in parallel to sixth input in the rear...

Page 7: ...ut and amplifier input are designed to insert signal processor such as equalizer or limiter Please note that AMP IN and PRE AMP are designed before the master potentiometer so master doesn t affect au...

Page 8: ...y counterclockwise position input gain is 14dBu At fully clockwise position input gain is 30dBu PHANTOM POWER SWITCH Set phantom power switch to ON position to activate phantom power to all XLR inputs...

Page 9: ...Please note Amplifiers output can run only one configuration at the same time Operating amplifiers using 4 and 70 or 100 volt concurrently may cause damage to the amplifier or connected speakers Remo...

Page 10: ...Connectors TS connector TRS connector XLR male connector XLR female connector RCA connector Cable wiring examples Cable to balanced input from balanced output TRS connectors...

Page 11: ...nbalanced output TS and TRS connectors Cable to unbalanced input from unbalanced output TS connectors Cable to balanced input from balanced output XLR connectors Cable to unbalanced input from balance...

Page 12: ...input from RCA output RCA and TS connectors Cable to balanced input from RCA output RCA and XLR connectors Cable to balanced input from RCA output RCA and TRS connectors Cable to RCA input from balan...

Page 13: ...Block diagram...

Page 14: ...sensitivity 17 dBu Amp in sensitivity 0 dBu S N ratio 75 dB Frequency response 80 Hz 15 kHz Equalizer 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz 12dB Cooling Convection Indicators Power signal protection O...

Page 15: ...________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ __...

Page 16: ...AMC is a registered trademark of AMC Baltic www amcpro eu...

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