SEAS SW 250/1 L0019-04S
Best box: 41.3 L bass reflex tuned to 27.8 Hz · F3 26.5 Hz
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Comparable 10.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the SEAS SW 250/1 L0019-04S does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 41.3 Liters |
| Tuning Frequency (Fb) | 27.8 Hz |
| F3 (-3 dB Cutoff) | 26.5 Hz |
| F6 / F10 Extension | 23.6 Hz / 21.0 Hz |
| Port Inner Diameter | Ø 7.5 cm |
| Port Physical Length | 36.1 cm |
| First Pipe Resonance | 476.0 Hz |
| Estimated MOL @ F3 | 108.0 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 18.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 50.4 Hz |
| F3 (-3 dB Cutoff) | 53.6 Hz |
| F6 / F10 Extension | 39.9 Hz / 29.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 31.0 Hz |
| Total Q (Qts) | 0.43 |
| Electrical Q (Qes) | 0.461 |
| Mechanical Q (Qms) | 6.42 |
| Equivalent Volume (Vas) | 31.0 Liters |
| Diaphragm Area (Sd) | 346.0 cm² |
| DC Resistance (Re) | 3.2 Ω |
| Efficiency Bandwidth Product (EBP) | 67.3 |
| Linear Excursion (Xmax) | 11.0 mm |
| Thermal Power (Pe) | 400.0 W |
| Nominal Diameter | 10.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for SEAS SW 250/1 L0019-04S?
Load Forge's calculated alignment puts SEAS SW 250/1 L0019-04S in a 41.3 liter vented enclosure tuned to 27.8 Hz, reaching an F3 cutoff of approximately 26.5 Hz.
Can SEAS SW 250/1 L0019-04S be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 18.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 53.6 Hz.
What port dimensions should be used for SEAS SW 250/1 L0019-04S to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 7.5 cm with a length of 36.1 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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