Eminence Delta-15A 15" Driver 8 Ohm
Best box: 406.1 L bass reflex tuned to 29.7 Hz · F3 29.1 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Eminence Delta-15A 15" Driver 8 Ohm 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
- Large enclosure volume (406.1 L) requires extensive internal matrix bracing to prevent panel resonance.
- Limited linear excursion (Xmax: 2.7 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) | 406.1 Liters |
| Tuning Frequency (Fb) | 29.7 Hz |
| F3 (-3 dB Cutoff) | 29.1 Hz |
| F6 / F10 Extension | 25.2 Hz / 22.2 Hz |
| Port Inner Diameter | Ø 15.0 cm |
| Port Physical Length | 4.1 cm |
| First Pipe Resonance | 4234.0 Hz |
| Estimated MOL @ F3 | 114.1 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 347.3 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 48.5 Hz |
| F3 (-3 dB Cutoff) | 49.7 Hz |
| F6 / F10 Extension | 37.3 Hz / 28.0 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 40.0 Hz |
| Total Q (Qts) | 0.53 |
| Electrical Q (Qes) | 0.567 |
| Mechanical Q (Qms) | 8.05 |
| Equivalent Volume (Vas) | 270.7 Liters |
| Diaphragm Area (Sd) | 864.6 cm² |
| DC Resistance (Re) | 6.3 Ω |
| Efficiency Bandwidth Product (EBP) | 70.5 |
| Linear Excursion (Xmax) | 2.7 mm |
| Thermal Power (Pe) | 400.0 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 Eminence Delta-15A 15" Driver 8 Ohm?
Load Forge's calculated alignment puts Eminence Delta-15A 15" Driver 8 Ohm in a 406.1 liter vented enclosure tuned to 29.7 Hz, reaching an F3 cutoff of approximately 29.1 Hz.
Can Eminence Delta-15A 15" Driver 8 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 347.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 49.7 Hz.
What port dimensions should be used for Eminence Delta-15A 15" Driver 8 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 15.0 cm with a length of 4.1 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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