HiVi Swan M8N-1 Bass-midwoofer
Best box: 81.1 L bass reflex tuned to 25.0 Hz · F3 23.1 Hz
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Comparable 8.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the HiVi Swan M8N-1 Bass-midwoofer 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) | 81.1 Liters |
| Tuning Frequency (Fb) | 25.0 Hz |
| F3 (-3 dB Cutoff) | 23.1 Hz |
| F6 / F10 Extension | 20.9 Hz / 18.7 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 8.0 cm |
| First Pipe Resonance | 2140.0 Hz |
| Estimated MOL @ F3 | 101.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 36.4 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 44.6 Hz |
| F3 (-3 dB Cutoff) | 45.8 Hz |
| F6 / F10 Extension | 34.5 Hz / 26.0 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 29.0 Hz |
| Total Q (Qts) | 0.45 |
| Electrical Q (Qes) | 0.494 |
| Mechanical Q (Qms) | 5.02 |
| Equivalent Volume (Vas) | 53.5 Liters |
| Diaphragm Area (Sd) | 220.0 cm² |
| DC Resistance (Re) | 6.5 Ω |
| Efficiency Bandwidth Product (EBP) | 58.7 |
| Linear Excursion (Xmax) | 5.8 mm |
| Thermal Power (Pe) | 80.0 W |
| Nominal Diameter | 8.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for HiVi Swan M8N-1 Bass-midwoofer?
Load Forge's calculated alignment puts HiVi Swan M8N-1 Bass-midwoofer in a 81.1 liter vented enclosure tuned to 25.0 Hz, reaching an F3 cutoff of approximately 23.1 Hz.
Can HiVi Swan M8N-1 Bass-midwoofer be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 36.4 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 45.8 Hz.
What port dimensions should be used for HiVi Swan M8N-1 Bass-midwoofer to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 8.0 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.
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