Subwoofer Box Comparison Calculator:
Compare bandpass, sealed and vented frequency output graphs
for a subwoofer in one program.
Solving for sound pressure level.
constant | |
speaker system total Q at fc | |
speaker total Q at fs |
efficiency bandwidth product | |
speaker resonance frequency | |
speaker electrical Q |
system resonance frequency | |
speaker system total Q at fc | |
speaker resonance frequency | |
speaker total Q at fs |
minus three decibel half power frequency | |
system resonance frequency |
net box internal volume | |
air volume with same acoustic compliance as the speaker suspension | |
constant |
free air reference efficiency | |
speaker resonance frequency | |
air volume with same acoustic compliance as the speaker suspension | |
speaker electrical Q |
sound pressure level | |
free air reference efficiency |
maximum air volume displaced by cone excursion | |
cone effective radiation area | |
cone peak linear displacement |
cone effective radiation area | |
cone diameter plus one third of surround |
K1 constant | |
air density | |
system resonance frequency | |
maximum air volume displaced by cone excursion | |
sound speed in air |
K2 constant | |
K1 constant |
Amax constant |
maximum displacement limited linear power output | |
K1 constant | |
Amax constant |
required electrical input to achieve Par | |
maximum displacement limited linear power output | |
free air reference efficiency |
peak sound pressure level | |
maximum speaker power input |
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By Jimmy Raymond
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