Subwoofer Box Comparison Calculator:
Compare bandpass, sealed and vented frequency output graphs
for a subwoofer in one program.
Solving for free efficiency bandwidth product.
speaker resonance frequency (f_{s}) = 0 = 0 hertz 
speaker electrical Q (Q_{es}) = 0 = 0 
efficiency bandwidth product (EBP) = NOT CALCULATED 
constant  
speaker system total Q at f_{c}  
speaker total Q at f_{s} 
efficiency bandwidth product  
speaker resonance frequency  
speaker electrical Q 
system resonance frequency  
speaker system total Q at f_{c}  
speaker resonance frequency  
speaker total Q at f_{s} 
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 
K_{1} constant  
air density  
system resonance frequency  
maximum air volume displaced by cone excursion  
sound speed in air 
K_{2} constant  
K_{1} constant 
A_{max} constant 
maximum displacement limited linear power output  
K_{1} constant  
A_{max} constant 
required electrical input to achieve P_{ar}  
maximum displacement limited linear power output  
free air reference efficiency 
peak sound pressure level  
maximum speaker power input 
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