Bomber MÉDIO GRAVE 6″ OUTDOOR 200 WRMS 8 OHMS
Best box: 6.0 L bass reflex tuned to 141.6 Hz · F3 170.1 Hz
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Comparable 6.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Bomber MÉDIO GRAVE 6″ OUTDOOR 200 WRMS 8 OHMS does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- The textbook alignment (1.5 L at 202.3 Hz) would need a 12.9 cm port; the recommendation is retuned to 6.0 L at 141.6 Hz so the port can be built.
- Limited linear excursion (Xmax: 1.8 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 6.0 Liters |
| Tuning Frequency (Fb) | 141.6 Hz |
| F3 (-3 dB Cutoff) | 170.1 Hz |
| F6 / F10 Extension | 118.0 Hz / 109.2 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 4.2 cm |
| First Pipe Resonance | 4108.0 Hz |
| Estimated MOL @ F3 | 117.8 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.9 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.273; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 1.8 Liters |
| System Q (Qtc) | 1.273 (above Butterworth: Qtc cannot fall below Qts (0.90)) |
| System Resonance (Fc) | 336.6 Hz |
| F3 (-3 dB Cutoff) | 267.8 Hz |
| F6 / F10 Extension | 227.4 Hz / 186.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 238.0 Hz |
| Total Q (Qts) | 0.9 |
| Electrical Q (Qes) | 1.072 |
| Mechanical Q (Qms) | 5.6 |
| Equivalent Volume (Vas) | 1.8 Liters |
| Diaphragm Area (Sd) | 150.0 cm² |
| DC Resistance (Re) | 4.8 Ω |
| Efficiency Bandwidth Product (EBP) | 221.9 |
| Linear Excursion (Xmax) | 1.8 mm |
| Thermal Power (Pe) | 200.0 W |
| Nominal Diameter | 6.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Bomber MÉDIO GRAVE 6″ OUTDOOR 200 WRMS 8 OHMS?
Load Forge's calculated alignment puts Bomber MÉDIO GRAVE 6″ OUTDOOR 200 WRMS 8 OHMS in a 6.0 liter vented enclosure tuned to 141.6 Hz, reaching an F3 cutoff of approximately 170.1 Hz.
Can Bomber MÉDIO GRAVE 6″ OUTDOOR 200 WRMS 8 OHMS be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 1.8 liters with a Qtc of 1.273 (above Butterworth: Qtc cannot fall below Qts (0.90)), the system exhibits an F3 of 267.8 Hz.
What port dimensions should be used for Bomber MÉDIO GRAVE 6″ OUTDOOR 200 WRMS 8 OHMS to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 4.2 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
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