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CONTENTS
6.5.1
The current draw can be calculated by dividing the mains input power by the mains voltage.
We recommend that you design the power distribution for at least the required current at 1/8 power, or 1/3
power for heavy-duty demands such as concert touring and Industrial music etc.
The heat power can be calculated as following:
If a headroom figure of at least 5dB (1/3 full power) is used with a 4 ohms load on all four channels of the
amplifier.The 1/3 power per channel is then; 200 / 3 = 67 watts, and total output power is; 4 x 67 = 267
watts.
The mains power consumption from the chart above is 720 watts.
The heat power produced is the difference between the power consumption and output power;
720 - 267 = 453 watts total for the amplifier.
8 Ohm
4 Ohm
2 Ohm
1/3 Power level = Average power with music as programme material (continuous clipping)
1/8 Power level = Normal operating power with music as programme material (occasional clipping)
7
CONNECTIONS
7.1
Input connections
7.1.1
The Inp u t co n ne ctor s a re N eu tr ik co mb o jac ks an d inc or po r ate a n XL R a nd _" (6.3mm) jack. They are
a ctiv e b alan c ed a nd wire d a s be low :
PIN 1
PIN 2
PIN 3
PRINT
Calculation
MA200Q HEAT POWER
1/3 POWER
1/8 POWER
WATTS
307
235
453
370
705
605
Balanced inputs
G RO UN D/SHIEL D
H OT ( +)
C OL D (- )
Martin Audio – MA200Q Amplifier
1/3 POWER
1/8 POWER
Kcal/hour
260
200
390
320
610
520
11
1/3 POWER
1/8 POWER
BTU/hour
1050
800
1550
1260
2410
2060
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