Product guide

9
Backpanel
Fig. 3
33. AC Inlet with integrated fuse holder
This connector is meant for the connection of the supplied main cord. Connect one end of the power
cord to the connector, the other end to the mains, then turn on the power (17) switch to operate the
unit.
Make sure that the supply voltage matches the operation voltage before connecting the unit to mains.
Replace the fuse only with a fuse of the same specification (230V:T2,5A).
34. AC-selector
Before connecting your MA-630TU to the mains, make sure the AC-selector is set to the proper voltage
used in your country. If you’re not sure, consult a skilled technician.
35. Zone 1-6 com speaker terminal
Connect these terminal with the – terminal of your zone speaker(s).
36. Zone 1-6 70V output terminal
Each zone has its own output terminal. Connect this terminal to the + terminal of your 70V high
impedance speaker load. In case of using several speakers make sure all speakers are wired in parallel.
The total power rating of the high impedance speakers connected to this terminal summed, should never
exceed 30W.
37. FM antenna connector
Connect your FM antenna to this connector.
38. Siren remote terminal
Use this terminal for connecting a remote switch or relay contact. If these two contacts are shorted, all
inputs except mic input (11) will be muted when mic input (11) detects a sound.
39. Input 4 assign switch
This switch allows you to assign the Tape (46), CD (47) or Aux (48) input to channel 4.
40. Input 3 impedance/level switch
This switch allows you to set up combo input 3 (49) for line level, microphone level with phantom power or
microphone level without phantom power.
41. Input 2 impedance/level switch
This switch allows you to set up combo input 2 (50) for line level, microphone level with phantom power or
microphone level without phantom power.
42. GND Screw
This screw offers a separate ground connection. Can be useful in case of grounding problems.