RCF LF 12X401
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 45 Hz |
| Qts | 0.211 |
| Qes | 0.22 |
| Qms | 5.4 |
| Vas | 50 L |
| Sd | 530 cm² |
| Xmax | 6.1 mm |
| Re | 5.2 Ω |
| Bl | 25.7 T·m |
| Mms | 98.5 g |
| Pe | 1000 W |
| Sensitivity | 97 dB |
Alignment hint
| EBP | 205 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 4.9 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 |
|---|---|---|---|---|---|---|---|---|
| Sica 12 F 4 CP | 46 +1 | 0.2 -0.01 | 52 +2 | 6 -0.1 | 97.8 +0.8 | close | 700 W vs 1000 W: lower power handling · Xmax 6 mm < 6.1 mm: lower excursion-limited SPL | + |
| RCF LF 12N401 | 48 +3 | 0.205 -0.01 | 50 = | 5.2 -0.9 | 97.8 +0.8 | close | Xmax 5.2 mm < 6.1 mm: lower excursion-limited SPL | + |
| B&C 12 NBX 100 | 41 -4 | 0.226 +0.02 | 51 +1 | 6.6 +0.5 | 95.6 -1.4 | close | + | |
| B&C 12NBX100 | 41 -4 | 0.22 +0.01 | 51 +1 | 10 +3.9 | 96 -1 | close | + | |
| B&C 12CL76 | 48 +3 | 0.21 = | 59 +9 | 6 -0.1 | 98.5 +1.5 | close | 350 W vs 1000 W: lower power handling · Xmax 6 mm < 6.1 mm: lower excursion-limited SPL | + |
| B&C 12NW100 | 42 -3 | 0.2 -0.01 | 44 -6 | 9 +2.9 | 96 -1 | close | + | |
| Lavoce WAF124.01 | 42 -3 | 0.22 +0.01 | 49 -1 | 9 +2.9 | 93.8 -3.2 | close | + | |
| Lavoce WAN124.01 | 40 -5 | 0.21 = | 51 +1 | 8.5 +2.4 | 93.6 -3.4 | close | + | |
| Sica 12 K 4 PL | 48.5 +3.5 | 0.25 +0.04 | 47.4 -2.6 | 7 +0.9 | 97.1 +0.1 | close | + | |
| Beyma 12"P80/Fe V2 | 48 +3 | 0.21 = | 61 +11 | 7.5 +1.4 | 99 +2 | close | 700 W vs 1000 W: lower power handling | + |
Compare the closest 3 against the LF 12X401 →
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.