Beyma LOUDSPEAKER 8"MC300Nd 8 OH
Best box: 3.5 L bass reflex tuned to 117.0 Hz · F3 124.5 Hz
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Comparable 8.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Beyma LOUDSPEAKER 8"MC300Nd 8 OH 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 (3.5 L at 101.7 Hz) would need a 57.9 cm port; the recommendation is retuned to 3.5 L at 117.0 Hz so the port can be built.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 3.5 Liters |
| Tuning Frequency (Fb) | 117.0 Hz |
| F3 (-3 dB Cutoff) | 124.5 Hz |
| F6 / F10 Extension | 109.5 Hz / 94.9 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 42.0 cm |
| First Pipe Resonance | 410.0 Hz |
| Estimated MOL @ F3 | 115.9 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 1.9 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 192.9 Hz |
| F3 (-3 dB Cutoff) | 168.5 Hz |
| F6 / F10 Extension | 132.1 Hz / 101.0 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 62.0 Hz |
| Total Q (Qts) | 0.22 |
| Electrical Q (Qes) | 0.234 |
| Mechanical Q (Qms) | 3.8 |
| Equivalent Volume (Vas) | 18.0 Liters |
| Diaphragm Area (Sd) | 220.0 cm² |
| DC Resistance (Re) | 6.1 Ω |
| Efficiency Bandwidth Product (EBP) | 265.5 |
| Linear Excursion (Xmax) | 6.0 mm |
| Thermal Power (Pe) | 300.0 W |
| Nominal Diameter | 8.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Beyma LOUDSPEAKER 8"MC300Nd 8 OH?
Load Forge's calculated alignment puts Beyma LOUDSPEAKER 8"MC300Nd 8 OH in a 3.5 liter vented enclosure tuned to 117.0 Hz, reaching an F3 cutoff of approximately 124.5 Hz.
Can Beyma LOUDSPEAKER 8"MC300Nd 8 OH be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 1.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 168.5 Hz.
What port dimensions should be used for Beyma LOUDSPEAKER 8"MC300Nd 8 OH to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 42.0 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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