All Comparisons
Godzilla 18″ Car Subwoofer | 4700 Watts RMS | Dual Voice Coil 1 Ohm or 2 Ohm
American Bass
$1235.21
View ProductVS
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 | Godzilla 18″ Car Subwoofer | 4700 Watts RMS | Dual Voice Coil 1 Ohm or 2 Ohm | Down4sound PRO-FAB Birch FLAT PACK 12 | 1 12 Sub Box | DIY 12-Inch Ported Subwoofer Enclosure Box |
|---|---|---|
| General | ||
| RMS Power | 4700 W | — |
| Electromechanical | ||
| Re (DC Resistance) | 2 Ω | — |
| Fs (Resonant Frequency) | 30.3 Hz | 32 Hz |
| Qts (Total Q) | 0.504 | — |
| Qes (Electrical Q) | 0.56 | — |
| Qms (Mechanical Q) | 4.99 | — |
| Physical / Acoustic | ||
| Vas (Eq. Compliance) | 69.9 L | 68 L |
| Xmax (Excursion) | 22.5 mm | — |
| Mms (Moving Mass) | 781 g | — |
| Sd (Cone Area) | 1182 cm² | 165.1 cm² |
| BL (Force Factor) | 32.59 T·m | — |
| Sensitivity | 87.3 dB | — |
| EBP (Efficiency Bandwidth Product) | 54.107 | — |
| Ideal Enclosure | Flexible (Sealed or Ported) | — |