PA Audio Amplifier

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CATALOG
Page 13

International Quality Public Address System

Page 1

PAGE-14

LOUD SPEAKER CONNECTION GUIDE- 2

4 Units Amplifier Connections

4 units of 250 watt amplifier/ booster = 1000 watts
4 units of 500 watt amplifier/ booster = 2000 watts

LMT & Its USE

LMT are used in large installations where nos. of speaker are 
connected at a long distance. Due to increase in length of the 
cable sound signal decrease. LMT 100V line which is just as electric 
cable system overcome the losses occurred during transmission. 
LMT work as step down transformer and  always used in parallel
connections.

Power Loss For 23/36

Model Power output Power loss in cable
4 ohms Tap 8 ohms Tap
ALD-160 160watts 99watts 67watts
ALD-250 250watts 155watts 105watts
ALD-350 350watts 217watts 147watts

Power Loss For 40/36Wire

Model Power output Power loss in cable
4 ohms Tap 8 ohms Tap
ALD-160 160watts 73watts 45watts
ALD-250 250watts 115watts 70watts
ALD-350 350watts 161watts 99watts

Minimum Nose, Of driver Unit should connect to different amplifier models without LMT

Model Power AU-35 AU-40 AU-60
ALD-50 50Watt 2 2 1
ALD-60 60Watt 4 2 2
ALD-80 80Watt 4 4 2
ALD-125 125Watt 4 4 4
ALD-160 160Watt 8 8 4
ALD-200 200Watt   8 6
ALD-250 250Watt   8 8
ALD-300 300Watt     8
ALD-350 350Watt     8
ALD-400 400Watt 100v LMT  
ALD-500 500Watt 100v LMT  
ALD-600 600Watt 100v LMT  
AR-30P 30Watts 1 1 1
AR-40P 40Watt 2 2 1
AR-50P 50Watt 4 4 2
AR-60P 60Watt 4 4 2
AR-75P 75Watt 4 4 2
AR-90P 90Watt 6 6 2
AR-120P 120Watt 8 8 4

Impedance at 100V, 70V, at power tap of 100V LMT

Model Impedance at 100V Impedance at 70V Power Tap Impedance
ALD-50 222 ohms   40 Watts 250 ohms
ALD-60 167 ohms 82 ohms 30 Watts 330 ohms
ALD-80 126 ohms 61 ohms 25 Watts 400 ohms
ALD-125 84 ohms 37 ohms 20 watts 500 ohms
ALD-160 63 ohms 31ohms 15 Watts 670 ohms
ALD-200 54 ohms 28 ohms    
ALD-250 40 ohms 20 ohms 10 Watts 670 ohms
ALD-300 34 ohms 18 ohms    
ALD-350 29  ohms 14 ohms 7.5 Watts 1330 ohms
ALD-400 24 ohms 13 ohms 5 Watts 2000 ohms
ALD-500 20 ohms 10 ohms 3 Watts 3330 ohms
ALD-600 18 ohms 9 ohms 2.5 Watts 4000 ohms
AR-30P 358 ohms   1 Watt 1000 ohms
AR-40P 220 ohms      
AR-50P 200 ohms      
AR-60P 200 ohms      
AR-75P 133 ohms      
AR-90P 108 ohms      
AR-120P 83 ohms      

|| Amplifiers - Booster / Power / Two Zone / Instrument || Audio Mixer - Echo / Stereo || Conference Systems ||

 || Cassette - Player / Recorders / Preamplifiers || Driver Units || Horns - Reflex / Speaker || Microphones || Mobile PA || 

|| Speakers - Ceiling / Column / System / Wall / Professional || Sound System || Stand - Floor / Table / Accessories ||

|| HOME || e-mail ||

Due to continuous design & technical development specifications are subject to change without notice.