Acoustic Elegance TD15M-4
Best box: 194.3 L bass reflex tuned to 39.5 Hz · F3 38.7 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Acoustic Elegance TD15M-4 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 (194.3 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 194.3 Liters |
| Tuning Frequency (Fb) | 39.5 Hz |
| F3 (-3 dB Cutoff) | 38.7 Hz |
| F6 / F10 Extension | 34.5 Hz / 30.3 Hz |
| Port Inner Diameter | Ø 12.5 cm |
| Port Physical Length | 3.2 cm |
| First Pipe Resonance | 5381.0 Hz |
| Estimated MOL @ F3 | 120.4 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 86.9 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 68.4 Hz |
| F3 (-3 dB Cutoff) | 70.3 Hz |
| F6 / F10 Extension | 52.6 Hz / 39.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 34.7 Hz |
| Total Q (Qts) | 0.33 |
| Electrical Q (Qes) | 0.353 |
| Mechanical Q (Qms) | 5.09 |
| Equivalent Volume (Vas) | 312.0 Liters |
| Diaphragm Area (Sd) | 855.0 cm² |
| DC Resistance (Re) | 3.2 Ω |
| Efficiency Bandwidth Product (EBP) | 98.3 |
| Linear Excursion (Xmax) | 6.0 mm |
| Thermal Power (Pe) | 500.0 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 Acoustic Elegance TD15M-4?
Load Forge's calculated alignment puts Acoustic Elegance TD15M-4 in a 194.3 liter vented enclosure tuned to 39.5 Hz, reaching an F3 cutoff of approximately 38.7 Hz.
Can Acoustic Elegance TD15M-4 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 86.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 70.3 Hz.
What port dimensions should be used for Acoustic Elegance TD15M-4 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 3.2 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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