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18 inch Subwoofer Boxes

Subwoofer Box Sundown Audio Sundown X-18 V3 D1 28hrtz

Ported Box for 18 inch Subwoofer | Slot (Front Panel)
Net Internal Volume: 7 ft3. Port Area: 112 in2. Tuning Frequency: 28 Hz.

Subwoofer Box Sundown Audio 18.V3 D1

Ported Box for 18 inch Subwoofer | Slot (Front Panel)
Net Internal Volume: 7 ft3. Port Area: 112 in2. Tuning Frequency: 32 Hz.

Subwoofer Box Sundown Audio 18"

Ported Box for 18 inch Subwoofer | Slot (Front Panel)
Net Internal Volume: 7 ft3. Port Area: 112 in2. Tuning Frequency: 32 Hz.

Subwoofer Box Dayton Audio Mega Large "18" Subwoofer Box

Sealed Box for 18 inch
Net Internal Volume: 17.7 ft3.

Subwoofer Box SoundQubed 2 HDX 3 18s

Ported Box for Dual 18 inch Subwoofers | Slot (Front Panel)
Net Internal Volume: 12.4 ft3. Port Area: 161 in2. Tuning Frequency: 26 Hz.

Subwoofer Box SoundQubed HDX 3

Ported Box for Dual 18 inch Subwoofers | Slot (Front Panel)
Net Internal Volume: 11.5 ft3. Port Area: 161 in2. Tuning Frequency: 26 Hz.

Subwoofer Box Skar Audio SDR-18 X 2

Ported Box for Dual 18 inch Subwoofers | Slot (Right Panel)
Net Internal Volume: 10 ft3. Port Area: 129.5 in2. Tuning Frequency: 25 Hz.

Subwoofer Box Skar Audio 18" SDR

Ported Box for 18 inch Subwoofer | Slot (Front Panel)
Net Internal Volume: 5.5 ft3. Port Area: 64.8 in2. Tuning Frequency: 28 Hz.

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