Powersoft 40''-4MM M-FORCE 01 STRAIGHT
Thiele-Small parameters
| Nominal size | 39.5" |
|---|---|
| Impedance | 0.5 Ω |
| Fs | 26.8 Hz |
| Qts | 0.247 |
| Qes | 0.253 |
| Qms | 10.008 |
| Vas | 500 L |
| Sd | 5810 cm² |
| Xmax | 5.6 mm |
| Re | 0.26 Ω |
| Bl | 24 T·m |
| Mms | 3345.1 g |
| Pe | 5000 W |
| Sensitivity | 112.6 dB |
Alignment hint
| EBP | 106 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 69.5 L |
EBP > 100: favours a ported (bass-reflex) alignment.
Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.
Substitute candidates
| Driver | Fs (Hz) | Qts | Vas (L) | Xmax (mm) | Sens (dB) | Fit | Notes | Compare |
|---|---|---|---|---|---|---|---|---|
| Powersoft 40''-4MM M-FORCE 02 REVERSED | 26.8 = | 0.184 -0.06 | 500 = | 4.7 -0.9 | 115.3 +2.7 | usable | 0.25 Ω vs 0.5 Ω: amp load changes · Xmax 4.7 mm < 5.6 mm: lower excursion-limited SPL | + |
Compare the closest 1 against the 40''-4MM M-FORCE 01 STRAIGHT →
Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.
Used in enclosures (0)
No enclosure in the catalog uses this driver yet.