RCF L12CX2K
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 59.7 Hz |
| Qts | 0.46 |
| Qes | 0.49 |
| Qms | 8 |
| Vas | 65 L |
| Sd | 471 cm² |
| Xmax | 4 mm |
| Re | 5.72 Ω |
| Bl | 12.2 T·m |
| Mms | 34 g |
| Pe | 75 W |
| Sensitivity | 96.3 dB |
Alignment hint
| EBP | 122 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 47.7 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 |
|---|---|---|---|---|---|---|---|---|
| Celestion BN12-300X | 56.2 -3.5 | 0.479 +0.02 | 61.2 -3.8 | 4 = | 96.1 -0.2 | close | + | |
| Fane SOVEREIGN 12-300 vp | 54 -5.7 | 0.455 -0.01 | 59 -6 | 4.5 +0.5 | 96.2 -0.1 | close | + | |
| JB Systems PWX12-200 | 59.4 -0.3 | 0.474 +0.01 | 55.5 -9.5 | 3.6 -0.4 | 96.5 +0.2 | close | Xmax 3.6 mm < 4 mm: lower excursion-limited SPL | + |
| Fertin Acoustics LB 31 SONO | 59.5 -0.2 | 0.407 -0.05 | 70 +5 | 4 = | 97.5 +1.2 | close | + | |
| RCF L12/568H | 58.8 -0.9 | 0.41 -0.05 | 72 +7 | 4 = | 97.1 +0.8 | close | + | |
| LaVoce FBASS12-20 | 53 -6.7 | 0.46 = | 75.41 +10.41 | 4.3 +0.3 | 97 +0.7 | close | + | |
| Eminence DELTA 12 LF v2 | 51 -8.7 | 0.477 +0.02 | 67.9 +2.9 | 4.6 +0.6 | 95.7 -0.6 | close | + | |
| Eminence DELTA 12 LFA | 51 -8.7 | 0.477 +0.02 | 67.9 +2.9 | 4.8 +0.8 | 95.7 -0.6 | close | + | |
| Beyma SM112 vp | 57.8 -1.9 | 0.391 -0.07 | 64.6 -0.4 | 4.2 +0.2 | 97.7 +1.4 | close | + | |
| P.Audio E12-200S v2024 | 59 -0.7 | 0.569 +0.11 | 62 -3 | 4.1 +0.1 | 96.4 +0.1 | close | + |
Compare the closest 3 against the L12CX2K →
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.