Peerless XXLS-300F50AL01-04
Best box: 131.2 L bass reflex tuned to 21.0 Hz · F3 20.0 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Peerless XXLS-300F50AL01-04 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 (131.2 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 131.2 Liters |
| Tuning Frequency (Fb) | 21.0 Hz |
| F3 (-3 dB Cutoff) | 20.0 Hz |
| F6 / F10 Extension | 17.9 Hz / 15.9 Hz |
| Port Inner Diameter | Ø 7.5 cm |
| Port Physical Length | 17.5 cm |
| First Pipe Resonance | 981.0 Hz |
| Estimated MOL @ F3 | 104.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 57.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 37.9 Hz |
| F3 (-3 dB Cutoff) | 39.5 Hz |
| F6 / F10 Extension | 29.5 Hz / 22.1 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 22.4 Hz |
| Total Q (Qts) | 0.41 |
| Electrical Q (Qes) | 0.428 |
| Mechanical Q (Qms) | 9.79 |
| Equivalent Volume (Vas) | 113.0 Liters |
| Diaphragm Area (Sd) | 467.6 cm² |
| DC Resistance (Re) | 2.63 Ω |
| Efficiency Bandwidth Product (EBP) | 52.3 |
| Linear Excursion (Xmax) | 12.3 mm |
| Thermal Power (Pe) | 120.0 W |
| Nominal Diameter | 12.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Peerless XXLS-300F50AL01-04?
Load Forge's calculated alignment puts Peerless XXLS-300F50AL01-04 in a 131.2 liter vented enclosure tuned to 21.0 Hz, reaching an F3 cutoff of approximately 20.0 Hz.
Can Peerless XXLS-300F50AL01-04 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 57.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 39.5 Hz.
What port dimensions should be used for Peerless XXLS-300F50AL01-04 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 7.5 cm with a length of 17.5 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.
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