OPERATING INSTRUCTIONS
PA AMPLIFIER
P-1812
Please follow the instructions in this manual to obtain the optimum results from this unit.We also recommend that you keep this manual handy for future reference.
Page 1: ...ERATING INSTRUCTIONS PA AMPLIFIER P 1812 Please follow the instructions in this manual to obtain the optimum results from this unit We also recommend that you keep this manual handy for future referen...
Page 2: ...eaker Connections 6 5 2 Emergency Control Connection 6 5 3 Remote Power ON OFF Control Connection 6 5 4 Emergency Input and Control Input Terminal Connections 7 6 INSTALLATION 8 7 RACK MOUNTING 8 8 CO...
Page 3: ...n the power cord as doing so may result in fire or electric shock Be sure to replace the unit s terminal cover after connection completion Because high voltage is applied to the speaker terminals neve...
Page 4: ...ause injury and or damage Make sure that the volume control is set to minimum position before power is switched on Loud noise produced at high volume when power is switched on can impair hearing Do no...
Page 5: ...9 Remote control terminal block Permits the unit s power to be remotely turned ON or OFF by way of make contacts For details refer to p 6 Emergency Control Connection and Remote Power ON OFF Control...
Page 6: ...REMOTE IN CONTROL EMER GENCY A 1803 A 1806 A 1812 With the P 1812 s power turned OFF it can be remotely turned ON from the optional A 1803 A 1806 or A 1812 PA Amplifier by making the Remote IN OUT ter...
Page 7: ...NCY P 1812 Connect this cable when requiring remote power ON OFF control While the Emergency control input terminals remain shorted the power of all the connected A 1800 series and P 1812s is turned o...
Page 8: ...w to prevent the unit s internal temperature rise 7 RACK MOUNTING To mount the unit in a standard 19 equipment rack use the optional MB 25B Rack Mounting Bracket Attach the MB 25B to the unit using th...
Page 9: ...ght Note that the sound quality is downgraded when the red indicator remains lit To prevent the accidental change of the setting of Master Volume Control remove its knob after setting it to the desire...
Page 10: ...jumper to OFF position OFF Factory preset position ON OFF ON Upper view without case Leave the modification described here to a qualified service technician only Please consult your TOA dealer This m...
Page 11: ...OWER switch 83 100 V 4 16 POWER 220 230 V AC or 240 V AC 50 60 Hz PT Fuse Fuse Fuse Output level meter Relay JP OT C C LINE OUT 0 dB 600 0 dB MASTER volume INPUT LEVEL 0 dB 10 dB REMOTE IN CONTROL EME...
Page 12: ...dB Master volume max INPUT LEVEL switch 10 dB Control Input POWER REMOTE No voltage make contact input Open voltage 24 V DC Short circuit under 1 mA M3 screw terminal 2 EMERGENCY 3 No voltage make con...
