PowerBass L-1504D
Best box: 166.5 L bass reflex tuned to 22.4 Hz · F3 21.4 Hz
Open and tweak this box live ↗
Will it fit your requirements?
Check the PowerBass L-1504D against your space and targets — instant, no sign-up.
Free, no sign-up to simulate · a free account saves your design
Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the PowerBass L-1504D 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 (166.5 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 166.5 Liters |
| Tuning Frequency (Fb) | 22.4 Hz |
| F3 (-3 dB Cutoff) | 21.4 Hz |
| F6 / F10 Extension | 18.8 Hz / 16.7 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 21.0 cm |
| First Pipe Resonance | 818.0 Hz |
| Estimated MOL @ F3 | 112.0 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 87.9 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 39.8 Hz |
| F3 (-3 dB Cutoff) | 38.4 Hz |
| F6 / F10 Extension | 29.7 Hz / 22.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 27.0 Hz |
| Total Q (Qts) | 0.47 |
| Electrical Q (Qes) | 0.517 |
| Mechanical Q (Qms) | 5.14 |
| Equivalent Volume (Vas) | 111.0 Liters |
| Diaphragm Area (Sd) | 780.0 cm² |
| DC Resistance (Re) | 1.6 Ω |
| Efficiency Bandwidth Product (EBP) | 52.2 |
| Linear Excursion (Xmax) | 12.0 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 PowerBass L-1504D?
Load Forge's calculated alignment puts PowerBass L-1504D in a 166.5 liter vented enclosure tuned to 22.4 Hz, reaching an F3 cutoff of approximately 21.4 Hz.
Can PowerBass L-1504D be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 87.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 38.4 Hz.
What port dimensions should be used for PowerBass L-1504D to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 21.0 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.
Not sure if L-1504D fits your physical space?
Don't force a driver into the wrong box. Use Bass Match to calculate which of 8,000+ catalog drivers delivers the highest SPL, lowest F3, and cleanest port air velocity for your exact trunk or room dimensions.
Run Bass Match for Your Space