RCF L12/554K
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 40.3 Hz |
| Qts | 0.23 |
| Qes | 0.23 |
| Qms | 8.55 |
| Vas | 130 L |
| Sd | 456 cm² |
| Xmax | 5 mm |
| Re | 6.15 Ω |
| Bl | 15.4 T·m |
| Mms | 35 g |
| Pe | 150 W |
| Sensitivity | 97.5 dB |
Alignment hint
| EBP | 175 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 15.4 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 L 12/544 | 40 -0.3 | 0.224 -0.01 | 130 = | 4.9 -0.1 | 98.7 +1.2 | close | Xmax 4.9 mm < 5 mm: lower excursion-limited SPL | + |
| Eminence KAPPA PRO 12 | 37 -3.3 | 0.241 +0.01 | 121 -9 | 4.8 -0.2 | 97.5 = | close | Xmax 4.8 mm < 5 mm: lower excursion-limited SPL | + |
| Eminence Kappa Pro-12A | 37 -3.3 | 0.24 +0.01 | 121 -9 | 4.8 -0.2 | 97.1 -0.4 | close | Xmax 4.8 mm < 5 mm: lower excursion-limited SPL | + |
| AE Speakers TD12M | 38.1 -2.2 | 0.25 +0.02 | 140 +10 | 6 +1 | 97.3 -0.2 | close | + | |
| Beyma 12CXA400FE | 42 +1.7 | 0.251 +0.02 | 119 -11 | 6 +1 | 98.1 +0.6 | close | + | |
| RCF L 12P400K | 34 -6.3 | 0.241 +0.01 | 130 = | 6 +1 | 96.3 -1.2 | close | + | |
| Dayton Audio APOLLO 12N | 38 -2.3 | 0.261 +0.03 | 128.1 -1.9 | 6.8 +1.8 | 96.4 -1.1 | close | + | |
| Beyma SM112/N | 38 -2.3 | 0.27 +0.04 | 138 +8 | 7.3 +2.3 | 97.2 -0.3 | close | + | |
| Precision Devices PD912 | 41.29 +0.99 | 0.25 +0.02 | 97.87 -32.13 | 5 = | 97 -0.5 | close | + | |
| B&C 12CXN76 | 42 +1.7 | 0.19 -0.04 | 120 -10 | 6 +1 | 98.3 +0.8 | close | + |
Compare the closest 3 against the L12/554K →
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.