Oberton 12L300
Best box: 23.4 L bass reflex tuned to 77.6 Hz · F3 83.8 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Oberton 12L300 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
- Limited linear excursion (Xmax: 3.25 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) | 23.4 Liters |
| Tuning Frequency (Fb) | 77.6 Hz |
| F3 (-3 dB Cutoff) | 83.8 Hz |
| F6 / F10 Extension | 72.8 Hz / 62.8 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 9.6 cm |
| First Pipe Resonance | 1800.0 Hz |
| Estimated MOL @ F3 | 119.1 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 11.8 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 139.9 Hz |
| F3 (-3 dB Cutoff) | 130.9 Hz |
| F6 / F10 Extension | 101.2 Hz / 76.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 53.8 Hz |
| Total Q (Qts) | 0.254 |
| Electrical Q (Qes) | 0.261 |
| Mechanical Q (Qms) | 9.98 |
| Equivalent Volume (Vas) | 79.6 Liters |
| Diaphragm Area (Sd) | 514.7 cm² |
| DC Resistance (Re) | 5.35 Ω |
| Efficiency Bandwidth Product (EBP) | 206.4 |
| Linear Excursion (Xmax) | 3.2 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 Oberton 12L300?
Load Forge's calculated alignment puts Oberton 12L300 in a 23.4 liter vented enclosure tuned to 77.6 Hz, reaching an F3 cutoff of approximately 83.8 Hz.
Can Oberton 12L300 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 11.8 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 130.9 Hz.
What port dimensions should be used for Oberton 12L300 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 9.6 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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