RCF L 12P400K
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 34 Hz |
| Qts | 0.241 |
| Qes | 0.25 |
| Qms | 7 |
| Vas | 130 L |
| Sd | 456 cm² |
| Xmax | 6 mm |
| Re | 6 Ω |
| Bl | 15.9 T·m |
| Mms | 49.1 g |
| Pe | 200 W |
| Sensitivity | 96.3 dB |
Alignment hint
| EBP | 136 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 17.1 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 |
|---|---|---|---|---|---|---|---|---|
| RCF L12P400K | 33.7 -0.3 | 0.25 +0.01 | 130 = | 6 = | 94.7 -1.6 | close | + | |
| Fane FC-123F01 | 34 = | 0.235 -0.01 | 110 -20 | 7.8 +1.8 | 96.1 -0.2 | close | + | |
| Dayton Audio APOLLO 12N | 38 +4 | 0.261 +0.02 | 128.1 -1.9 | 6.8 +0.8 | 96.4 +0.1 | close | + | |
| AE Speakers TD12M | 38.1 +4.1 | 0.25 +0.01 | 140 +10 | 6 = | 97.3 +1 | close | + | |
| Eminence Kappa Pro-12A | 37 +3 | 0.24 = | 121 -9 | 4.8 -1.2 | 97.1 +0.8 | close | Xmax 4.8 mm < 6 mm: lower excursion-limited SPL | + |
| Eminence KAPPA PRO 12 | 37 +3 | 0.241 = | 121 -9 | 4.8 -1.2 | 97.5 +1.2 | close | Xmax 4.8 mm < 6 mm: lower excursion-limited SPL | + |
| Beyma SM112/N | 38 +4 | 0.27 +0.03 | 138 +8 | 7.3 +1.3 | 97.2 +0.9 | close | + | |
| Davis 31TCA12 | 34 = | 0.296 +0.05 | 149 +19 | 6 = | 95.9 -0.4 | close | + | |
| RCF L12/554K | 40.3 +6.3 | 0.23 -0.01 | 130 = | 5 -1 | 97.5 +1.2 | close | 150 W vs 200 W: lower power handling · Xmax 5 mm < 6 mm: lower excursion-limited SPL | + |
| Beyma 12CXA400FE | 42 +8 | 0.251 +0.01 | 119 -11 | 6 = | 98.1 +1.8 | close | + |
Compare the closest 3 against the L 12P400K →
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.