B&C Speakers 5MDN38 16Ω
Best box: 1.9 L bass reflex tuned to 112.2 Hz · F3 261.9 Hz
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Comparable 5.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the B&C Speakers 5MDN38 16Ω 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 187.0 Hz) would need a 15.9 cm port; the recommendation is retuned to 1.9 L at 112.2 Hz so the port can be built.
- Limited linear excursion (Xmax: 3.5 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) | 1.9 Liters |
| Tuning Frequency (Fb) | 112.2 Hz |
| F3 (-3 dB Cutoff) | 261.9 Hz |
| F6 / F10 Extension | 158.9 Hz / 92.3 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 21.0 cm |
| First Pipe Resonance | 818.0 Hz |
| Estimated MOL @ F3 | 110.1 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 0.68 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 329.2 Hz |
| F3 (-3 dB Cutoff) | 321.7 Hz |
| F6 / F10 Extension | 245.3 Hz / 186.3 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 230.0 Hz |
| Total Q (Qts) | 0.48 |
| Electrical Q (Qes) | 0.571 |
| Mechanical Q (Qms) | 3.0 |
| Equivalent Volume (Vas) | 0.8 Liters |
| Diaphragm Area (Sd) | 95.0 cm² |
| DC Resistance (Re) | 11.7 Ω |
| Efficiency Bandwidth Product (EBP) | 402.5 |
| Linear Excursion (Xmax) | 3.5 mm |
| Thermal Power (Pe) | 100.0 W |
| Nominal Diameter | 5.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for B&C Speakers 5MDN38 16Ω?
Load Forge's calculated alignment puts B&C Speakers 5MDN38 16Ω in a 1.9 liter vented enclosure tuned to 112.2 Hz, reaching an F3 cutoff of approximately 261.9 Hz.
Can B&C Speakers 5MDN38 16Ω be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.68 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 321.7 Hz.
What port dimensions should be used for B&C Speakers 5MDN38 16Ω to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 21.0 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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