Beyma BMA15MI100-4
Best box: 113.4 L bass reflex tuned to 47.3 Hz · F3 48.4 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Beyma BMA15MI100-4 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 113.4 Liters |
| Tuning Frequency (Fb) | 47.3 Hz |
| F3 (-3 dB Cutoff) | 48.4 Hz |
| F6 / F10 Extension | 42.7 Hz / 37.2 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 2.1 cm |
| First Pipe Resonance | 8078.0 Hz |
| Estimated MOL @ F3 | 120.6 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 53.4 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 83.3 Hz |
| F3 (-3 dB Cutoff) | 84.8 Hz |
| F6 / F10 Extension | 63.6 Hz / 47.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 37.0 Hz |
| Total Q (Qts) | 0.29 |
| Electrical Q (Qes) | 0.304 |
| Mechanical Q (Qms) | 6.38 |
| Equivalent Volume (Vas) | 264.0 Liters |
| Diaphragm Area (Sd) | 880.0 cm² |
| DC Resistance (Re) | 6.18 Ω |
| Efficiency Bandwidth Product (EBP) | 121.8 |
| Linear Excursion (Xmax) | 4.5 mm |
| Thermal Power (Pe) | 450.0 W |
| Nominal Diameter | 15.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Beyma BMA15MI100-4?
Load Forge's calculated alignment puts Beyma BMA15MI100-4 in a 113.4 liter vented enclosure tuned to 47.3 Hz, reaching an F3 cutoff of approximately 48.4 Hz.
Can Beyma BMA15MI100-4 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 53.4 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 84.8 Hz.
What port dimensions should be used for Beyma BMA15MI100-4 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 2.1 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.
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