Subwoofer Box Sundown Audio U18
Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 5.8 ft3.
Port Area: 60.5 in2.
Tuning Frequency: 32 Hz.
Subwoofer Box SPL SI HT- 18 v3 HomeSub
Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 8.3 ft3.
Port Area: 75.8 in2.
Tuning Frequency: 22 Hz.
Subwoofer Box Sundown Audio u18
Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 6.4 ft3.
Port Area: 93.0 in2.
Tuning Frequency: 32 Hz.
Subwoofer Box full 18 megapower
Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 6 ft3.
Port Area: 30 in2.
Tuning Frequency: 30 Hz.
Subwoofer Box sub 18 megapower side
Ported Box
for 18 inch Subwoofer
| Slot (Right Panel)
Net Internal Volume: 5 ft3.
Port Area: 30 in2.
Tuning Frequency: 30 Hz.
Subwoofer Box SPL sub 18 megapower
Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 5 ft3.
Port Area: 60 in2.
Tuning Frequency: 40 Hz.
Subwoofer Box Skar Audio Basket Up Port Side
Ported Box
for 18 inch Subwoofer
| Slot (Right Panel)
Net Internal Volume: 5.3 ft3.
Port Area: 80 in2.
Tuning Frequency: 32 Hz.
Subwoofer Box Skar Audio Dual 4 Inch Ports
Ported Box
for 18 inch Subwoofer
| Pipe (Front Panel)
Net Internal Volume: 6 ft3.
Tuning Frequency: 32 Hz.
