Quest Engineering M120, Owner'S Manual

Page 1: ...Owner s Manual M120...

Page 2: ...ructions for future reference 3 Read all safety instructions carefully 4 Follow the manufacturer s instructions 5 Do not use this device near a liquid source or in a humid place 6 Only clean the devic...

Page 3: ...ion 6 Wiring Guide 9 Operations 12 Music on Hold MoH 13 Media Module 15 Block Diagram 16 Specifications 17 21000 Transcanadienne Baie d Urf Qu bec H9X 4B7 Phone 1 877 374 5266 Fax 888 918 2244 www eri...

Page 4: ...lso available for businesses wishing to enhance their customers telephone experience So when you connect this mixer to a telecommunications system customers can listen to music or pre recorded message...

Page 5: ...rols Two 2 layer priority muting Music on hold M O H output used to connect the mixer to the telephone system to play music or pre recorded messages This output can also be used to supply a line level...

Page 6: ...cut boost on the 100Hz and 10kHz bands 3 Master Volume Control This knob determines the overall volume of the system 4 Indicators 3 The Protect indicator lights when the protection circuit is activate...

Page 7: ...st the input sensitivity of each channel 5 Mic Line input connectors Channel 1 is equipped with a terminal block connector and channels 2 and 3 are equipped with RCA connector and terminal block conne...

Page 8: ...e of long cables to connect several loudspeakers to the same amplifier You can also adjust the level of each speaker by changing the configuration of the transformer The M Series mixer amplifiers are...

Page 9: ...the output voltage and step down the current so that multiple speakers with transformers can be connected using long cables Constant tension systems allow the use of cables from 1 to 1 6 mm in diamete...

Page 10: ...If your console has balanced outputs use balanced three conductor connections and connectors you can use unbalanced connections but you ll get better sound quality and less noise if you use balanced c...

Page 11: ...as unbalanced inputs Balanced Line Unbalanced Line Source Vers Destination Mixer amplifier input Output Balanced Line Unbalanced Line Source Vers Destination This connection reduces the signal level...

Page 12: ...ft 12 AWG 61 100 ft 10 AWH 101ft 150 ft 8 AWG 151 200 ft 6 AWG NOTE Custom wiring should be performed by qualified personnel only Class 2 wiring is required CAUTION Never use shielded cable for speake...

Page 13: ...ng Guide Speaker connections are shown in Figure 2 2 Figure 2 2 How to connect speakers WARNING Never use the low impedance 4 8 and high impedance 25V 70V outputs simultaneously Figure 2 3 Wrong conne...

Page 14: ...t power of the amp To achieve the best signal to noise ratio the Master Volume knob should normally be set near maximum MAX and the CLIP indicator should light occasionally but not frequently on signa...

Page 15: ...e function When the higher level source is activated other input signals are automatically cut off except for input signals of the same priority level CH2 CH3 AUX CH1 Telephone Paging Using Music on H...

Page 16: ...tput to power a 2nd zone For use for 2 or more zones the example below illustrates the installation that can be done when the unit is used in conjunction with a 2nd unit The MOH connector of the first...

Page 17: ...Block Diagram 15 M120...

Page 18: ...rated power Less than 0 5 Power Band Width at 1kHz from speaker out tap 80Hz 18kHz with less than 0 5 THD DC Output Offset Less than 3mV Operating Temperature Humidity at non condensing 0 40 C at 95 h...

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