B & C BAC10MD26A
Best box: 4.2 L bass reflex tuned to 104.0 Hz · F3 142.7 Hz
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Comparable 10.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the B & C BAC10MD26A 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 (3.4 L at 130.0 Hz) would need a 14.1 cm port; the recommendation is retuned to 4.2 L at 104.0 Hz so the port can be built.
- Limited linear excursion (Xmax: 1.5 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) | 4.2 Liters |
| Tuning Frequency (Fb) | 104.0 Hz |
| F3 (-3 dB Cutoff) | 142.7 Hz |
| F6 / F10 Extension | 111.7 Hz / 92.1 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 9.4 cm |
| First Pipe Resonance | 1833.0 Hz |
| Estimated MOL @ F3 | 117.6 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) | 244.6 Hz |
| F3 (-3 dB Cutoff) | 211.0 Hz |
| F6 / F10 Extension | 166.5 Hz / 127.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 76.0 Hz |
| Total Q (Qts) | 0.21 |
| Electrical Q (Qes) | 0.22 |
| Mechanical Q (Qms) | 4.8 |
| Equivalent Volume (Vas) | 20.0 Liters |
| Diaphragm Area (Sd) | 320.0 cm² |
| DC Resistance (Re) | 5.8 Ω |
| Efficiency Bandwidth Product (EBP) | 346.1 |
| Linear Excursion (Xmax) | 1.5 mm |
| Thermal Power (Pe) | 350.0 W |
| Nominal Diameter | 10.0" |
| 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 BAC10MD26A?
Load Forge's calculated alignment puts B & C BAC10MD26A in a 4.2 liter vented enclosure tuned to 104.0 Hz, reaching an F3 cutoff of approximately 142.7 Hz.
Can B & C BAC10MD26A 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 211.0 Hz.
What port dimensions should be used for B & C BAC10MD26A to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 9.4 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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