SB Audience BIANCO-150B350
Best box: 319.1 L bass reflex tuned to 26.2 Hz · F3 27.0 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the SB Audience BIANCO-150B350 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 (319.1 L at 23.8 Hz) would need a 120.6 cm port; the recommendation is retuned to 319.1 L at 26.2 Hz so the port can be built.
- Xmax is not published, so the port size is an empirical estimate (area ≥ 12 in² per ft³ of net volume, minimum by driver size), not a displacement calculation. Check air velocity in Load Forge Studio.
- Port length (95.4 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.
- Large enclosure volume (319.1 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT NEEDS ELBOW / 3D| Net Box Volume (Vb) | 319.1 Liters |
| Tuning Frequency (Fb) | 26.2 Hz |
| F3 (-3 dB Cutoff) | 27.0 Hz |
| F6 / F10 Extension | 22.5 Hz / 19.6 Hz |
| Port Inner Diameter ESTIMATED | Ø 33.3 cm |
| Port Physical Length | 95.4 cm |
| First Pipe Resonance | 180.0 Hz |
| Estimated MOL @ F3 | 116.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 395.1 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 39.8 Hz |
| F3 (-3 dB Cutoff) | 40.5 Hz |
| F6 / F10 Extension | 30.6 Hz / 23.1 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 34.0 Hz |
| Total Q (Qts) | 0.57 |
| Electrical Q (Qes) | 0.598 |
| Mechanical Q (Qms) | 12.17 |
| Equivalent Volume (Vas) | 212.7 Liters |
| Diaphragm Area (Sd) | 855.0 cm² |
| DC Resistance (Re) | 7.2 Ω |
| Efficiency Bandwidth Product (EBP) | 56.9 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | 350.0 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 SB Audience BIANCO-150B350?
Load Forge's calculated alignment puts SB Audience BIANCO-150B350 in a 319.1 liter vented enclosure tuned to 26.2 Hz, reaching an F3 cutoff of approximately 27.0 Hz.
Can SB Audience BIANCO-150B350 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 395.1 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 40.5 Hz.
What port dimensions should be used for SB Audience BIANCO-150B350 to avoid port chuffing?
Xmax is not published for SB Audience BIANCO-150B350, so the port is an empirical estimate: a 33.3 cm diameter with a length of 95.4 cm (area at least 12 in² per ft³ of net volume). Check the air velocity at your power level in Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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