Amperage/BTU Calculator

SELECT UNITS:
  Current @ 100V Current @ 115V Current @ 230V BTU/h @ 100V BTU/h @ 115V BTU/h @ 230V
Products Qty. Idle Max Cont. Idle Max Cont. Idle Max Cont. Idle 25%*
Max Cont.
Idle 25%*
Max Cont.
Idle 25%*
Max Cont.
1100-LFC
500-HP
600-HP
650-P
700-HP
900-LFC
Acheron 100
Acheron 80
Acheron Designer
Acheron LF
Acheron Studio
CAL 32
CAL 64
CAL 96
CQ-1
CQ-2
D-Mitri DAI-24
D-Mitri DAIO-168
D-Mitri DAIO-816
D-Mitri DAO-24
D-Mitri DCIO-24
D-Mitri DCM-2
D-Mitri DCM-4
D-Mitri DCP
D-Mitri DDIO-24
D-Mitri DGPIO
D-Mitri DVRAS
D-Mitri DWTRX
DF-4
DS-4P
Galileo/Callisto
All Versions
HD-1
JM-1P
LEO-M
LEOPARD
LYON
M'elodie
M1D
M1D-Sub
M2D
M2D-Sub
M3D
M3D-Sub
MICA
MILO
MILO 120
MILO 60
MINA
MJF-210
MJF-212A
MM-10AC
MM-10ACX
MPS-488
MPS-488HP†
w/8 HMS-10
MPS-488HP†
w/8 MM-10XP
MPS-488HP†
w/8 MM-4XP
MPS-488HP†
w/8 UP-4XP
MSL-4
MSL-6
MTS-4A
MVC-5
PSW-2
PSW-6
SB-1
SB-2
SB-3F
STELLA 188†
w/8 Stella 8C
UM-100P
UM-1P
UMS-1P
UPA-1P
UPA-2P
UPJ-1P
UPJunior
UPM-1P
UPM-2P
UPQ-1P
UPQ-2P
USM-100P
USM-1P
USW-1P
X-10
X-400
X-800
X-800C
  Current @ 100V Current @ 115V Current @ 230V BTU/h @ 100V BTU/h @ 115V BTU/h @ 230V
  Qty. Idle Max Cont. Idle Max Cont. Idle Max Cont. Idle 25%*
Max Cont.
Idle 25%*
Max Cont.
Idle 25%*
Max Cont.
 Totals
 Totals + 30%  
The minimum electrical service amperage required is the sum of each loudspeaker’s maximum long-term continuous current. An additional 30 percent above the minimum amperage is recommended to prevent peak voltage drops at the service entry.

* All power used by a loudspeaker system is eventually converted to heat dissipated by amplifiers and drivers. Acoustic power is absorbed and converted to heat by air and acoustic materials. Power consumption is measured at maximum output using pink noise as the program source. With real-world signals at high output, the power consumed is about 25% of this value over long time periods. Using a BTU value of 25% of maximum power consumption provides an appropriate value for HVAC system designs.

Current draw values for the MPS-488HP/Stella-188 vary with number and model of loudspeakers connected. The MPS-488HP/Stella-188 delivers power to its load at approximately 85% efficiency when operating at maximum continuous power, and at approximately 70% when idling. The total wattage consumed multiplied by the efficiency will determine the heat at the speaker(s), and the remainder will be dissipated in the equipment rack.