RCF L12P520
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 65 Hz |
| Qts | 0.37 |
| Qes | 0.39 |
| Qms | 6.52 |
| Vas | 47 L |
| Sd | 530 cm² |
| Xmax | 4 mm |
| Re | 5 Ω |
| Bl | 16.2 T·m |
| Mms | 50.16 g |
| Pe | 125 W |
| Sensitivity | 97 dB |
Alignment hint
| EBP | 167 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 17.7 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 |
|---|---|---|---|---|---|---|---|---|
| LaVoce WAF122.50 | 59 -6 | 0.365 -0.01 | 47 = | 4 = | 97.4 +0.4 | close | + | |
| HH Electronics B12L | 64 -1 | 0.382 +0.01 | 44.8 -2.2 | 3.4 -0.6 | 97.4 +0.4 | close | Xmax 3.4 mm < 4 mm: lower excursion-limited SPL | + |
| RCF L 12P540 | 59 -6 | 0.349 -0.02 | 45 -2 | 4.3 +0.3 | 97.6 +0.6 | close | + | |
| SB Audience NERO-12MWN400D | 55 -10 | 0.387 +0.02 | 48.3 +1.3 | 3.9 -0.1 | 96.8 -0.2 | close | Xmax 3.9 mm < 4 mm: lower excursion-limited SPL | + |
| Turbosound TS-12W350/8W | 55 -10 | 0.347 -0.02 | 49 +2 | 4 = | 96.9 -0.1 | close | + | |
| Beyma 12MCS500-8 | 62 -3 | 0.417 +0.05 | 44 -3 | 4.9 +0.9 | 97.2 +0.2 | close | + | |
| P.Audio SN-12MB mk2 | 62 -3 | 0.413 +0.04 | 43.6 -3.4 | 5 +1 | 97.6 +0.6 | close | + | |
| RCF L 12P520 | 65 = | 0.355 -0.02 | 49 +2 | 3.4 -0.6 | 99.6 +2.6 | close | Xmax 3.4 mm < 4 mm: lower excursion-limited SPL | + |
| PD PD 124NR1 | 58 -7 | 0.354 -0.02 | 49 +2 | 7.4 +3.4 | 97.3 +0.3 | close | + | |
| Precision Devices PD 124NR1 | 58 -7 | 0.354 -0.02 | 49 +2 | 7.4 +3.4 | 97.3 +0.3 | close | + |
Compare the closest 3 against the L12P520 →
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.