Bomber SUBWOOFER 12″ SLIM HIGH POWER 400 WRMS 2 OHMS
Best box: 43.0 L sealed · Fc 52.3 Hz · F3 43.7 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Bomber SUBWOOFER 12″ SLIM HIGH POWER 400 WRMS 2 OHMS does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Textbook Bass Reflex — not recommended (5.9 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 34.4 Liters |
| Tuning Frequency (Fb) | 31.4 Hz |
| F3 (-3 dB Cutoff) | 50.0 Hz |
| F6 / F10 Extension | 44.1 Hz / 36.6 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 27.2 cm |
| First Pipe Resonance | 632.0 Hz |
| Estimated MOL @ F3 | 113.3 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.3 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.838; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 43.0 Liters |
| System Q (Qtc) | 1.838 (above Butterworth: Qtc cannot fall below Qts (1.30)) |
| System Resonance (Fc) | 52.3 Hz |
| F3 (-3 dB Cutoff) | 43.7 Hz |
| F6 / F10 Extension | 38.4 Hz / 32.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 37.0 Hz |
| Total Q (Qts) | 1.3 |
| Electrical Q (Qes) | 1.525 |
| Mechanical Q (Qms) | 8.8 |
| Equivalent Volume (Vas) | 43.0 Liters |
| Diaphragm Area (Sd) | 507.0 cm² |
| DC Resistance (Re) | 2.0 Ω |
| Efficiency Bandwidth Product (EBP) | 24.3 |
| Linear Excursion (Xmax) | 6.0 mm |
| Thermal Power (Pe) | 400.0 W |
| Nominal Diameter | 12.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Bomber SUBWOOFER 12″ SLIM HIGH POWER 400 WRMS 2 OHMS?
A simple ported box is not recommended for Bomber SUBWOOFER 12″ SLIM HIGH POWER 400 WRMS 2 OHMS: the textbook alignment (34.4 liters tuned to 31.4 Hz) needs a 27.2 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.
Can Bomber SUBWOOFER 12″ SLIM HIGH POWER 400 WRMS 2 OHMS be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 43.0 liters with a Qtc of 1.838 (above Butterworth: Qtc cannot fall below Qts (1.30)), the system exhibits an F3 of 43.7 Hz.
What port dimensions should be used for Bomber SUBWOOFER 12″ SLIM HIGH POWER 400 WRMS 2 OHMS to avoid port chuffing?
A straight 6.8 cm port would need 27.2 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
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