Bliesma M126B-6
Best box: 11.4 L bass reflex tuned to 52.7 Hz · F3 54.2 Hz
Open and tweak this box live ↗
Will it fit your requirements?
Check the Bliesma M126B-6 against your space and targets — instant, no sign-up.
Estimated retail 149.00 USD · Check price & availability ↗
Free, no sign-up to simulate · a free account saves your design
Comparable 5.25" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Bliesma M126B-6 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) | 11.4 Liters |
| Tuning Frequency (Fb) | 52.7 Hz |
| F3 (-3 dB Cutoff) | 54.2 Hz |
| F6 / F10 Extension | 47.4 Hz / 41.3 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 15.0 cm |
| First Pipe Resonance | 1146.0 Hz |
| Estimated MOL @ F3 | 101.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 5.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 96.5 Hz |
| F3 (-3 dB Cutoff) | 96.1 Hz |
| F6 / F10 Extension | 73.0 Hz / 55.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 45.0 Hz |
| Total Q (Qts) | 0.32 |
| Electrical Q (Qes) | 0.374 |
| Mechanical Q (Qms) | 2.2 |
| Equivalent Volume (Vas) | 20.0 Liters |
| Diaphragm Area (Sd) | 88.0 cm² |
| DC Resistance (Re) | 5.5 Ω |
| Efficiency Bandwidth Product (EBP) | 120.2 |
| Linear Excursion (Xmax) | 4.0 mm |
| Thermal Power (Pe) | 40.0 W |
| Nominal Diameter | 5.25" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Bliesma M126B-6?
Load Forge's calculated alignment puts Bliesma M126B-6 in a 11.4 liter vented enclosure tuned to 52.7 Hz, reaching an F3 cutoff of approximately 54.2 Hz.
Can Bliesma M126B-6 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 5.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 96.1 Hz.
What port dimensions should be used for Bliesma M126B-6 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 15.0 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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.
Not sure if M126B-6 fits your physical space?
Don't force a driver into the wrong box. Use Bass Match to calculate which of 8,000+ catalog drivers delivers the highest SPL, lowest F3, and cleanest port air velocity for your exact trunk or room dimensions.
Run Bass Match for Your Space