RCF L 12/544
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 40 Hz |
| Qts | 0.224 |
| Qes | 0.23 |
| Qms | 8.55 |
| Vas | 130 L |
| Sd | 456 cm² |
| Xmax | 4.9 mm |
| Re | 6.2 Ω |
| Bl | 15.5 T·m |
| Mms | 35.5 g |
| Pe | 150 W |
| Sensitivity | 98.7 dB |
Alignment hint
| EBP | 174 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 14.5 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 |
|---|---|---|---|---|---|---|---|---|
| RCF L12/554K | 40.3 +0.3 | 0.23 +0.01 | 130 = | 5 +0.1 | 97.5 -1.2 | close | + | |
| Eminence KAPPA PRO 12 | 37 -3 | 0.241 +0.02 | 121 -9 | 4.8 -0.1 | 97.5 -1.2 | close | Xmax 4.8 mm < 4.9 mm: lower excursion-limited SPL | + |
| Eminence Kappa Pro-12A | 37 -3 | 0.24 +0.02 | 121 -9 | 4.8 -0.1 | 97.1 -1.6 | close | Xmax 4.8 mm < 4.9 mm: lower excursion-limited SPL | + |
| Beyma 12CXA400FE | 42 +2 | 0.251 +0.03 | 119 -11 | 6 +1.1 | 98.1 -0.6 | close | + | |
| AE Speakers TD12M | 38.1 -1.9 | 0.25 +0.03 | 140 +10 | 6 +1.1 | 97.3 -1.4 | close | + | |
| B&C 12CXN76 | 42 +2 | 0.19 -0.03 | 120 -10 | 6 +1.1 | 98.3 -0.4 | close | + | |
| RCF LF 12G301 | 43 +3 | 0.219 -0.01 | 97 -33 | 5.9 +1 | 98.6 -0.1 | close | + | |
| RCF L 12P400K | 34 -6 | 0.241 +0.02 | 130 = | 6 +1.1 | 96.3 -2.4 | close | + | |
| Beyma 12K200 v1 | 35 -5 | 0.225 = | 160 +30 | 4.5 -0.4 | 97.8 -0.9 | close | Xmax 4.5 mm < 4.9 mm: lower excursion-limited SPL | + |
| Dayton Audio APOLLO 12N | 38 -2 | 0.261 +0.04 | 128.1 -1.9 | 6.8 +1.9 | 96.4 -2.3 | close | + |
Compare the closest 3 against the L 12/544 →
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.