Ohmic Audio

Table A.10: Enclosure Type Selection by Qts

Qts Range Best Enclosure Type Characteristics
< 0.3 Ported, Bandpass Very efficient, boomy without proper design
0.3-0.4 Ported optimal Excellent for ported enclosures
0.4-0.5 Ported or Sealed Works well in either
0.5-0.7 Sealed optimal Good transient response, tight bass
0.7-1.0 Sealed only Poor in ported, good sealed
> 1.0 Sealed small box Limited output, very tight bass

Crossover Frequencies and Slopes