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Amplifier Power & SPL Calculator
Watts · Sensitivity · Distance · Impedance
SPL from Amp Power
Speaker Sensitivity:
Amplifier Power:
Distance:
Environment:
Anechoic
Outdoor
Indoor
110.0 dB SPL
Maximum SPL at specified distance
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Required Amp Power
Target SPL:
Speaker Sensitivity:
Distance:
Headroom:
3 dB (2x power)
6 dB (4x power)
10 dB (10x power)
63.2 Watts
Required amplifier power (with headroom)
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Multiple Speaker Arrays
Single Speaker SPL:
Number of Speakers:
1
2
4
8
16
100.0 dB SPL
Total array SPL (+0.0 dB coupling gain)
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Speaker Comparison
Speaker A
Sensitivity:
Power:
Speaker B
Sensitivity:
Power:
Speaker
SPL @ 1m
Difference
Speaker A
110.0 dB
0.0 dB
Speaker B
115.0 dB
+5.0 dB
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Ohm's Law for Audio
Voltage (V):
Current (I):
Power (P):
Impedance (Z):
-- V
Voltage
-- A
Current
-- W
Power
-- Ω
Impedance
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Series/Parallel Impedance
Configuration:
Series
Parallel
Series-Parallel (2x2)
Speaker Impedance:
Number of Speakers:
2
4
6
8
4.0 Ω
Total load impedance
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Amplifier Damping Factor
Speaker Impedance:
Amp Output Z:
Cable Length:
Cable Gauge:
12 AWG (0.0082 Ω/m)
10 AWG (0.0052 Ω/m)
8 AWG (0.0033 Ω/m)
6 AWG (0.0021 Ω/m)
48.8
Damping factor (higher is better)
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Wire Gauge Calculator
Power:
Impedance:
Distance (one way):
Max Power Loss:
0.5 dB (10%)
1.0 dB (20%)
1.5 dB (30%)
12 AWG
Recommended minimum wire gauge
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Common Speaker/Amp Presets
Speakers
JBL VTX V25
JBL SRX915
d&b Y7P
d&b T10
L-Acoustics K2
Meyer UPA-1P
Amplifiers
Crown XTi 1002
Crown XLS 2502
QSC GX5
QSC PLX3602
Yamaha P7000S
Lab.gruppen C28:4
Visual SPL Reference
30
60
90
110
120
130+
Whisper
Conversation
City Traffic
Rock Concert
Jet Engine
Pain Threshold
90 dB SPL