Euphoria EWXB15D2
Best box: 76.7 L sealed · Fc 45.0 Hz · F3 38.0 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Euphoria EWXB15D2 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
- Straight vent would be 107.6 cm long: not physically buildable as a simple tube. Use a passive radiator, a folded slot port or model a 3D folded duct in Load Forge Studio.
Textbook Bass Reflex — not recommended
PORT NOT BUILDABLE| Net Box Volume (Vb) | 61.4 Liters |
| Tuning Frequency (Fb) | 27.0 Hz |
| F3 (-3 dB Cutoff) | 40.2 Hz |
| F6 / F10 Extension | 33.6 Hz / 26.0 Hz |
| Port Inner Diameter | Ø 15.0 cm |
| Port Physical Length | 107.6 cm |
| First Pipe Resonance | 160.0 Hz |
| Estimated MOL @ F3 | 117.1 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.767 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.085; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 76.7 Liters |
| System Q (Qtc) | 1.085 (above Butterworth: Qtc cannot fall below Qts (0.77)) |
| System Resonance (Fc) | 45.0 Hz |
| F3 (-3 dB Cutoff) | 38.0 Hz |
| F6 / F10 Extension | 31.7 Hz / 25.6 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 31.8 Hz |
| Total Q (Qts) | 0.767 |
| Electrical Q (Qes) | 0.864 |
| Mechanical Q (Qms) | 6.83 |
| Equivalent Volume (Vas) | 76.7 Liters |
| Diaphragm Area (Sd) | 855.0 cm² |
| DC Resistance (Re) | 3.6 Ω |
| Efficiency Bandwidth Product (EBP) | 36.8 |
| Linear Excursion (Xmax) | 15.0 mm |
| Thermal Power (Pe) | 1000.0 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 Euphoria EWXB15D2?
A simple ported box is not recommended for Euphoria EWXB15D2: the textbook alignment (61.4 liters tuned to 27.0 Hz) needs a 107.6 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.
Can Euphoria EWXB15D2 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 76.7 liters with a Qtc of 1.085 (above Butterworth: Qtc cannot fall below Qts (0.77)), the system exhibits an F3 of 38.0 Hz.
What port dimensions should be used for Euphoria EWXB15D2 to avoid port chuffing?
A straight 15.0 cm port would need 107.6 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
Shareable Acoustic Card for Forums & Social Media
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