+ AMC SERIES 120W / 250W POWER AMPLIFIERS INSTALLATION AND OPERATION MANUAL
IMPORTANT SAFETY INFORMATION 1. Save the carton and packing material even if the equipment has arrived in good condition. Should you ever need to ship the unit, use only the original factory packing. 2. Read all documentation before operating your equipment. Retain all documentation for future reference. 3. Follow all instructions printed on unit chassis for proper operation. 4. Do not spill water or other liquids into or on the unit, or operate the unit while standing in liquid. 5.
INTRODUCTION AND CONTENTS The Australian Monitor Installation Series AMC+ range of booster amplifiers take the rugged reliability of the famous AMIS range and deliver the same high quality audio reinforcement, in a low cost, 2 rack unit package. The AMC+ booster amplifiers are available in 120 & 250 watts & offer 100 volt or 4 ohm outputs.
FRONT PANEL 3 3 2 1 2 1 1 On This LED indicates the unit is powered “on”. 2 Power This switch switches power on or off the mains. The up position is on. 3 Vents Air intake for fan cooling on AMC+250P only.
REAR PANEL 4 3 1 Input These 3 pin XLR sockets accept the source input for each channel. One input is a male XLR, the other is a female XLR. The male XLR is normally used as a thru output. When wiring from unbalanced sources, pins 1 and 3 should be shorted together (see Installation section). The input sensitivity (voltage required to drive amplifier to maximum power) of the amplifier is 150mV (-14dBu) with the Input Level Control set at maximum.
INSTALLATION Mounting When rack mounting, it is advisable to allow 1 rack space above and below the amplifier. When multiple amplifiers are mounted in a rack, exhaust fans should be used on the rack. Airflow for cooling the AMC+120P is by convection from bottom to top. Airflow for cooling the AMC+250P is by fan from front to side. Output 100V 70V 4 ohm Distance Direct Output The output terminal strip accepts wire sizes from 16-22AWG (1.5mm2 – 0.35mm2) or spade lugs.
TROUBLESHOOTING AND BLOCK DIAGRAM Troubleshooting Guide Trouble Likely Cause Remedy Power LED not on Power not reaching amplifier Check power switch is on Check mains connection Check mains fuse Distorted sound No sound but amp is on Output is short circuited Check speaker loads for shorts Input is overloaded Reduce input level at source Output is being over driven Reduce volume levels Volume controls down Check volume controls Amplifier has overheated Check for obstructions above and belo
DIMENSIONS Dimensions the same for both the AMC+120P and the AMC+250P PAGE 8 AMC+ SERIES INSTALLATION AND OPERATION MANUAL
SPECIFICATIONS AMC+ 120P AMC+ 250P POWER OUTPUT (0.5%THD, 1KHZ) 120W 250W S/N RATIO >88dB >88dB 50Hz-20kHz 40Hz-20kHz Better than 0.5% Better than 0.5% 150mV 20k 10dB 150mV 20k 10dB 4A 2A 8A 6.3A 3.15A 10A (x2) SIZE (WXHXD) 482 x 88 x 281mm 19” x 3.5” x 11.1” 482 x 88 x 384mm 19” x 3.5” 15.1” NET WEIGHT 10.5kg 23.1lb 11.5kg 25.3lb SHIPPING WEIGHT 12.5kg 27.6lb 14kg 30.8lb 525 x 175 x 385mm 20.7” x 6.9” x 15.2” 525 x 185 x 470mm 20.7” x 7.3” x 18.
NOTES AMC+ SERIES INSTALLATION AND OPERATION MANUAL PAGE 10
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AUSTRALIA AND NEW ZEALAND www.australianmonitor.com.au SYDNEY MELBOURNE ADELAIDE AUCKLAND (NSW SALES) (VIC & TAS SALES) (SA & NT SALES) (NZ SALES) 1 Clyde Street Silverwater NSW 2128 Private Bag 149 Silverwater NSW 1811 Phone: (02) 9647 1411 Fax: (02) 9648 3698 Email: nsw@audiotelex.com.au 22/277 Middleborough Road Box Hill VIC 3128 PO Box 151 Blackburn South VIC 3130 Phone: (03) 9890 7477 Fax: (03) 9890 7977 Email: vic@audiotelex.com.
