i was given the task to calculate the the level requirements of the PA set up. the formula used in the table below was how i was able to work out the power level of each piece of equipment from Ws to amps.
F.O.H sub
|
300w x
1.4 = 420W
|
420W / 230 = 1.83Amps x 2 = 3.66 Amps
|
3.66
|
F.O.H main
|
300w x 1.4 = 420W
|
420W / 230 = 1.83Amps x 2 = 3.66Amps
|
3.66
|
Mixing desk
|
80w x 1.4 = 112W
|
112W /
230 = 0.49Amps
|
0.49
|
Mackie monitors
|
1050w x 1.4 = 1470W
|
1470W / 230 = 6.4Amps
|
6.4
|
Wedge monitor
|
300w x 1.4 = 420W
|
420W /
230 = 1.83Amps
|
1.83
|
Yamaha
monitors(1xsmall/1x large)
|
320w +
300w = 620 x 1.4 =868W
|
868 / 230 = 3.78Amps
|
3.78
|
Guitar amp
|
300w x
1.4 = 420W
|
420W /
230 = 1.83Amps
|
1.83
|
Bass amp
|
73w x 1.4 =102w
|
102W / 230 = 0.45Amps
|
0.45
|
keyboard
|
8w x 1.4 = 12W
|
12W / 230 = 0.06Amps
|
0.06
|
Feedback destroyer
|
1A x
1.4 = 1.4A
|
1.4Amps
|
1.4
|
midiverb
|
0.78a + 0.85a = 1.63 x 1.4 = 2.3A
|
2.3Amps
|
2.3
|
Total(rounded)
|
26Amps
|
this is the link i used to work out the results.
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