NAS BMA 120 Installation & Operation Manual

Summary of BMA 120

  • Page 2: Caution

    Bma series: installation & operation manual page 2 the indesign bma 30, bma 60, bma 120 and bma 240 are high quality mixer amplifiers for commercial and industrial audio applications. The bma series feature 4 mic/line inputs. Microphone input 1 features a mute so that a microphone on this channel wi...

  • Page 3

    Bma series: installation & operation manual page 3 important safety instructions 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. To prevent injury please refer to these instructions for electrical and safety information before installing o...

  • Page 4

    Bma series: installation & operation manual page 4 >10cm >4in >10cm >10cm >4in >4in >10cm >4in you must allow a minimum 10 cm or 4 inches of unobstructed clearance around the unit. Do not place the unit on a bed, sofa, rug, or similar surface that could block the ventilation openings. If the unit is...

  • Page 5

    Bma series: installation & operation manual page 5 to calculate the amplifiers capability: if your chosen amplifier has a maximum output of 120 watts at 100v, the minimum impedance connected should be at least 83 ohms (100v x 100v/120w). Use a professional impedance meter, not a multimeter. Installa...

  • Page 6

    Bma series: installation & operation manual page 6 front panel 1. Power switch: turns mains power on and off. The round led light surrounding the master volume control indicates the unit is on/off. 2. Level indicator: to set for optimum working level normal signal should be kept under the 0db. The r...

  • Page 7

    Bma series: installation & operation manual page 7 rear panel 7. Mains socket: the unit is connected to the mains circuit with a standard iec type power lead. This socket contains a rated slow blow fuse. **note: only use a fuse equal to the marked rating • bma 30 uses a t1.25ah slow blow fuse • bma ...

  • Page 8

    Bma series: inst alla tion & opera tion manual page 8 block diagrams input:.

  • Page 9

    Bma series: inst alla tion & opera tion manual page 9 mix: block diagrams.

  • Page 10

    Bma series: inst alla tion & opera tion manual page 10 bma 30/60: block diagrams.

  • Page 11

    Bma series: inst alla tion & opera tion manual page 11 bma 120/240: block diagrams.

  • Page 12

    Bma series: installation & operation manual page 12 specifications bma 240 bma 120 bma 60 bma 30 output power 240w 120w 60w 30w ac power supply 230vac -240vac output low impedance 4 ohm-8 ohm 4 ohm-8 ohm 4 ohm-8 ohm 4 ohm-8 ohm hi impedance output 70v / 20 ohm 70v / 40 ohm 70v / 80 ohm 70v / 160 ohm...