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Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 6.8 ft3.
Port Area: 82.5 in2.
Tuning Frequency: 25.5 Hz.
Ported Box
for Dual 18 inch Subwoofers
| Slot (Front Panel)
Net Internal Volume: 16 ft3.
Port Area: 90 in2.
Tuning Frequency: 17 Hz.
Ported Box
for Dual 18 inch Subwoofers
| Slot (Front Panel)
Net Internal Volume: 12.7 ft3.
Port Area: 85.2 in2.
Tuning Frequency: 24 Hz.
Ported Box
for 18 inch
| Slot (Front Panel)
Net Internal Volume: 26 ft3.
Port Area: 500 in2.
Tuning Frequency: 32 Hz.
Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 6.4 ft3.
Port Area: 77.5 in2.
Tuning Frequency: 41.9 Hz.
Ported Box
for 18 inch Subwoofer
| Slot (Front Panel)
Net Internal Volume: 6.4 ft3.
Port Area: 75.3 in2.
Tuning Frequency: 41.8 Hz.
Ported Box
for Dual 18 inch Subwoofers
| Slot (Front Panel)
Net Internal Volume: 13 ft3.
Port Area: 80 in2.
Tuning Frequency: 28 Hz.
Ported Box
for Dual 18 inch Subwoofers
| Slot (Front Panel)
Net Internal Volume: 17 ft3.
Port Area: 150 in2.
Tuning Frequency: 37 Hz.