4
III. Installaon - Sealed Enclosures
Sealed enclosures provide excellent performance with SQ Series Subwoofers. They are the simplest enclosures to design
and build, and provide the most control over the subwoofer’s performance. This type of box is usually associated
with smooth, tight clean bass. Remember to glue and screw all joints, using enough glue to make sure all joints are
airtight. Loosely fill the enclosure with fiberglass, poly-fill, or cotton damping material.
Recommended Sealed Enclosures
SQ8 Recommended
Internal Volume
SQ10 Recommended
Internal Volume
SQ12 Recommended
Internal Volume
Optimum 0.543Optimum 0.753Optimum 13
Minimum 0.383Minimum 0.63Minimum 0.753
IV. Installaon - Ported Enclosures
Ported enclosures use a tuned vent to get addional output at the tuning frequency that is usually good for an addional
3dB of bass if built properly. Using a smaller port than recommended may cause noise from air turbulence whereas
too large of a port will not offer enough control over the woofer and can cause premature failure. If you do build a
ported box, Quinn recommends using flared ports as they produce less turbulence and noise. Remember to glue and
screw all joints, using enough glue to make sure all joints are airtight.
Note: Make sure there is at least 2” between the end of the port and the adjacent wall of the enclosure.
SQ8 SQ10 SQ12
Box Volume Maximum 131.7532.83
Box Volume Minimum 0.63132.253
Limited Space
Box Volume 131.7532.253
Port Diameter 2” Round 3” Round 4” Round
Port Length 9.25” 11.96” 13.31”
Unlimited Space
Box Volume 131.7532.253
Port Dimensions 1”x8.3” Rectangle 1.25”x11” Rectangle 1.25”x13” Rectangle
Port Length 11.75” 21.3” 33.2”
Recommended Vented Enclosures
Internal Volume (3) = (in Inches) Internal Width X Depth X Height
1728
Internal Volume (L) = (in Cenmeters) Internal Width X Depth X Height
1000
