RCF L 12P24
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 31 Hz |
| Qts | 0.145 |
| Qes | 0.15 |
| Qms | 4.3 |
| Vas | 205 L |
| Sd | 470 cm² |
| Xmax | 2 mm |
| Re | 6.5 Ω |
| Bl | 18.3 T·m |
| Mms | 39.8 g |
| Pe | 75 W |
| Sensitivity | 99 dB |
Alignment hint
| EBP | 207 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 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 |
|---|---|---|---|---|---|---|---|---|
| Fluxmag 1201-LB | 28.9 -2.1 | 0.163 +0.02 | 196.2 -8.8 | 4 +2 | 98.4 -0.6 | close | + | |
| Audax PR33S66 | 30 -1 | 0.169 +0.02 | 214.4 +9.4 | 3.8 +1.8 | 98.2 -0.8 | close | + | |
| EMS B12 | 31 = | 0.168 +0.02 | 227 +22 | 4.4 +2.4 | 98.8 -0.2 | close | + | |
| EMS B12 MKII | 30 -1 | 0.174 +0.03 | 227 +22 | 4.6 +2.6 | 98.3 -0.7 | usable | + | |
| Altec 617-8A v2 | 29 -2 | 0.162 +0.02 | 220.9 +15.9 | 1.3 -0.7 | 98 -1 | usable | Xmax 1.3 mm < 2 mm: lower excursion-limited SPL | + |
| Altec 414-8E | 30.3 -0.7 | 0.195 +0.05 | 224 +19 | 4 +2 | 97.9 -1.1 | usable | + | |
| Fertin Acoustics 30EXM8 | 23.7 -7.3 | 0.147 = | 250 +45 | 3 +1 | 96.5 -2.5 | usable | 50 W vs 75 W: lower power handling | + |
| Audax PR33S100 vp2 | 35 +4 | 0.136 -0.01 | 136.9 -68.1 | 3.8 +1.8 | 99.6 +0.6 | usable | + | |
| Altec 617-8A v1 | 28.8 -2.2 | 0.165 +0.02 | 248.1 +43.1 | 1.3 -0.7 | 98.4 -0.6 | usable | Xmax 1.3 mm < 2 mm: lower excursion-limited SPL | + |
| Altec 414-8C | 30.2 -0.8 | 0.204 +0.06 | 230.2 +25.2 | 4 +2 | 97.5 -1.5 | usable | + |
Compare the closest 3 against the L 12P24 →
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.