User Manual

Bandpass Box Design
 Box volumes and port dimensions
– We recommend round ports—they sound better.
 Bandpass boxes perform like sealed boxes
with a low pass filter.
– The port only allows low frequencies to pass
through it.
– The bandpass box will make a big peak in the car
–
Bandpass boxes are big
8
–
Bandpass boxes are big
– Bandpass boxes are more difficult to build
– Only use a bandpass box as a last resort
 In-car and anechoic frequency response
curves
– Notice that the bandpass box has a big peak in
the response, but less low bass than the vented
box.
 Excursion graph for the bandpass box
– Excursion is reduced at Fb, but the woofer has to
move a lot at low frequencies