PRV Audio 6MR200A-4
Best box: 7.8 L bass reflex tuned to 105.8 Hz · F3 125.5 Hz
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Comparable 6.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the PRV Audio 6MR200A-4 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 (3.1 L at 117.6 Hz) would need a 10.2 cm port; the recommendation is retuned to 7.8 L at 105.8 Hz so the port can be built.
- Limited linear excursion (Xmax: 2.62 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) | 7.8 Liters |
| Tuning Frequency (Fb) | 105.8 Hz |
| F3 (-3 dB Cutoff) | 125.5 Hz |
| F6 / F10 Extension | 93.9 Hz / 79.2 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 3.2 cm |
| First Pipe Resonance | 5433.0 Hz |
| Estimated MOL @ F3 | 116.4 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) | 3.9 Liters |
| System Q (Qtc) | 1.372 (above Butterworth: Qtc cannot fall below Qts (0.97)) |
| System Resonance (Fc) | 195.6 Hz |
| F3 (-3 dB Cutoff) | 157.7 Hz |
| F6 / F10 Extension | 135.1 Hz / 111.6 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 138.3 Hz |
| Total Q (Qts) | 0.97 |
| Electrical Q (Qes) | 1.081 |
| Mechanical Q (Qms) | 9.47 |
| Equivalent Volume (Vas) | 3.9 Liters |
| Diaphragm Area (Sd) | 137.0 cm² |
| DC Resistance (Re) | 3.4 Ω |
| Efficiency Bandwidth Product (EBP) | 128.0 |
| Linear Excursion (Xmax) | 2.6 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 PRV Audio 6MR200A-4?
Load Forge's calculated alignment puts PRV Audio 6MR200A-4 in a 7.8 liter vented enclosure tuned to 105.8 Hz, reaching an F3 cutoff of approximately 125.5 Hz.
Can PRV Audio 6MR200A-4 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 3.9 liters with a Qtc of 1.372 (above Butterworth: Qtc cannot fall below Qts (0.97)), the system exhibits an F3 of 157.7 Hz.
What port dimensions should be used for PRV Audio 6MR200A-4 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 3.2 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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