PRV Audio 6MB200-4 V2 6" Midbass Woofer 4 Ohm
Best box: 6.4 L bass reflex tuned to 84.2 Hz · F3 128.6 Hz
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Comparable 6.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the PRV Audio 6MB200-4 V2 6" Midbass Woofer 4 Ohm 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 (3.2 L at 105.2 Hz) would need a 25.9 cm port; the recommendation is retuned to 6.4 L at 84.2 Hz so the port can be built.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 6.4 Liters |
| Tuning Frequency (Fb) | 84.2 Hz |
| F3 (-3 dB Cutoff) | 128.6 Hz |
| F6 / F10 Extension | 105.8 Hz / 69.3 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 19.1 cm |
| First Pipe Resonance | 899.0 Hz |
| Estimated MOL @ F3 | 112.1 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.97 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.372; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 4.0 Liters |
| System Q (Qtc) | 1.372 (above Butterworth: Qtc cannot fall below Qts (0.97)) |
| System Resonance (Fc) | 175.1 Hz |
| F3 (-3 dB Cutoff) | 147.3 Hz |
| F6 / F10 Extension | 126.6 Hz / 104.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 123.8 Hz |
| Total Q (Qts) | 0.97 |
| Electrical Q (Qes) | 1.017 |
| Mechanical Q (Qms) | 20.84 |
| Equivalent Volume (Vas) | 4.0 Liters |
| Diaphragm Area (Sd) | 154.0 cm² |
| DC Resistance (Re) | 3.7 Ω |
| Efficiency Bandwidth Product (EBP) | 121.7 |
| Linear Excursion (Xmax) | 4.8 mm |
| Thermal Power (Pe) | 100.0 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 PRV Audio 6MB200-4 V2 6" Midbass Woofer 4 Ohm?
Load Forge's calculated alignment puts PRV Audio 6MB200-4 V2 6" Midbass Woofer 4 Ohm in a 6.4 liter vented enclosure tuned to 84.2 Hz, reaching an F3 cutoff of approximately 128.6 Hz.
Can PRV Audio 6MB200-4 V2 6" Midbass Woofer 4 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 4.0 liters with a Qtc of 1.372 (above Butterworth: Qtc cannot fall below Qts (0.97)), the system exhibits an F3 of 147.3 Hz.
What port dimensions should be used for PRV Audio 6MB200-4 V2 6" Midbass Woofer 4 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 19.1 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
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