Fane SOVEREIGN 15-250
Best box: 115.2 L bass reflex tuned to 36.5 Hz · F3 52.8 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Fane SOVEREIGN 15-250 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) | 115.2 Liters |
| Tuning Frequency (Fb) | 36.5 Hz |
| F3 (-3 dB Cutoff) | 52.8 Hz |
| F6 / F10 Extension | 44.1 Hz / 34.1 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 8.2 cm |
| First Pipe Resonance | 2100.0 Hz |
| Estimated MOL @ F3 | 117.2 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.73 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.032; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 144.0 Liters |
| System Q (Qtc) | 1.032 (above Butterworth: Qtc cannot fall below Qts (0.73)) |
| System Resonance (Fc) | 60.8 Hz |
| F3 (-3 dB Cutoff) | 50.3 Hz |
| F6 / F10 Extension | 41.8 Hz / 33.7 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 43.0 Hz |
| Total Q (Qts) | 0.73 |
| Electrical Q (Qes) | 0.813 |
| Mechanical Q (Qms) | 7.18 |
| Equivalent Volume (Vas) | 144.0 Liters |
| Diaphragm Area (Sd) | 853.0 cm² |
| DC Resistance (Re) | 6.2 Ω |
| Efficiency Bandwidth Product (EBP) | 52.9 |
| Linear Excursion (Xmax) | 4.3 mm |
| Thermal Power (Pe) | 250.0 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 Fane SOVEREIGN 15-250?
Load Forge's calculated alignment puts Fane SOVEREIGN 15-250 in a 115.2 liter vented enclosure tuned to 36.5 Hz, reaching an F3 cutoff of approximately 52.8 Hz.
Can Fane SOVEREIGN 15-250 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 144.0 liters with a Qtc of 1.032 (above Butterworth: Qtc cannot fall below Qts (0.73)), the system exhibits an F3 of 50.3 Hz.
What port dimensions should be used for Fane SOVEREIGN 15-250 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 8.2 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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