RCF L12P400K
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 33.7 Hz |
| Qts | 0.25 |
| Qes | 0.26 |
| Qms | 7 |
| Vas | 130 L |
| Sd | 456 cm² |
| Xmax | 6 mm |
| Re | 5.9 Ω |
| Bl | 15.5 T·m |
| Mms | 50 g |
| Pe | 200 W |
| Sensitivity | 94.7 dB |
Alignment hint
| EBP | 130 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 18.6 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 12P400K | 34 +0.3 | 0.241 -0.01 | 130 = | 6 = | 96.3 +1.6 | close | + | |
| Dayton Audio APOLLO 12N | 38 +4.3 | 0.261 +0.01 | 128.1 -1.9 | 6.8 +0.8 | 96.4 +1.7 | close | + | |
| AE Speakers TD12M | 38.1 +4.4 | 0.25 = | 140 +10 | 6 = | 97.3 +2.6 | close | + | |
| Fane FC-123F01 | 34 +0.3 | 0.235 -0.02 | 110 -20 | 7.8 +1.8 | 96.1 +1.4 | close | + | |
| Beyma POWER 12 COMPETITION | 29 -4.7 | 0.27 +0.02 | 122 -8 | 9 +3 | 95.1 +0.4 | close | + | |
| Davis 31TCA12 | 34 +0.3 | 0.296 +0.05 | 149 +19 | 6 = | 95.9 +1.2 | close | + | |
| AE Speakers TD12X | 33.9 +0.2 | 0.284 +0.03 | 159.4 +29.4 | 7 +1 | 95.4 +0.7 | close | + | |
| SICA 12 S 2.5 CS | 33 -0.7 | 0.265 +0.02 | 93.7 -36.3 | 6 = | 94 -0.7 | close | + | |
| Beyma SM112/N | 38 +4.3 | 0.27 +0.02 | 138 +8 | 7.3 +1.3 | 97.2 +2.5 | close | + | |
| JBL 1200FE-8 | 27 -6.7 | 0.256 +0.01 | 125 -5 | 10 +4 | 93.3 -1.4 | usable | + |
Compare the closest 3 against the L12P400K →
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.