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Down4sound PRO-FAB Birch FLAT PACK 12 | 1 12 Sub Box | DIY 12-Inch Ported Subwoofer Enclosure Box
Down4Sound
$139.99
View ProductSubwoofer Spec Comparison
| Parameter | E-Series V.4 12” Subwoofer | Down4sound PRO-FAB Birch FLAT PACK 12 | 1 12 Sub Box | DIY 12-Inch Ported Subwoofer Enclosure Box |
|---|---|---|
| Electromechanical | ||
| Re (DC Resistance) | 4.03 Ω | — |
| Fs (Resonant Frequency) | 28.48 Hz | 32 Hz |
| Qts (Total Q) | 0.464 | — |
| Qes (Electrical Q) | 0.509 | — |
| Qms (Mechanical Q) | 5.25 | — |
| Physical / Acoustic | ||
| Vas (Eq. Compliance) | 53.06 L | 68 L |
| Xmax (Excursion) | 14 mm | — |
| Mms (Moving Mass) | 218 g | — |
| Sd (Cone Area) | — | 165.1 cm² |
| BL (Force Factor) | 17.58 T·m | — |
| EBP (Efficiency Bandwidth Product) | 55.953 | — |
| Ideal Enclosure | Flexible (Sealed or Ported) | — |