Peerless XXLS-12 830845
Best box: 139.8 L bass reflex tuned to 20.6 Hz · F3 20.1 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Peerless XXLS-12 830845 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 (139.8 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 139.8 Liters |
| Tuning Frequency (Fb) | 20.6 Hz |
| F3 (-3 dB Cutoff) | 20.1 Hz |
| F6 / F10 Extension | 17.8 Hz / 15.7 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 32.5 cm |
| First Pipe Resonance | 529.0 Hz |
| Estimated MOL @ F3 | 108.3 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 60.8 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 37.4 Hz |
| F3 (-3 dB Cutoff) | 38.6 Hz |
| F6 / F10 Extension | 29.0 Hz / 21.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 21.0 Hz |
| Total Q (Qts) | 0.39 |
| Electrical Q (Qes) | 0.418 |
| Mechanical Q (Qms) | 5.8 |
| Equivalent Volume (Vas) | 139.0 Liters |
| Diaphragm Area (Sd) | 530.0 cm² |
| DC Resistance (Re) | 3.4 Ω |
| Efficiency Bandwidth Product (EBP) | 50.2 |
| Linear Excursion (Xmax) | 12.5 mm |
| Thermal Power (Pe) | 300.0 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-12 830845?
Load Forge's calculated alignment puts Peerless XXLS-12 830845 in a 139.8 liter vented enclosure tuned to 20.6 Hz, reaching an F3 cutoff of approximately 20.1 Hz.
Can Peerless XXLS-12 830845 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 60.8 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 38.6 Hz.
What port dimensions should be used for Peerless XXLS-12 830845 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 32.5 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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