RCF L12P48
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 19.5 Hz |
| Qts | 0.43 |
| Qes | 0.45 |
| Qms | 10 |
| Vas | 270 L |
| Sd | 483 cm² |
| Xmax | 5.5 mm |
| Re | 5.03 Ω |
| Bl | 10.5 T·m |
| Mms | 80.58 g |
| Pe | 75 W |
| Sensitivity | 88.3 dB |
Alignment hint
| EBP | 43 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 158.4 L |
EBP < 50: favours a sealed (closed) 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 12P48 | 19.5 = | 0.421 -0.01 | 270 = | 5.5 = | 90.6 +2.3 | close | + | |
| Siare 31SPCT vp jmp norm | 19.3 -0.2 | 0.399 -0.03 | 254 -16 | 4 -1.5 | 88.5 +0.2 | close | Xmax 4 mm < 5.5 mm: lower excursion-limited SPL | + |
| SB Acoustics SB34NRX75-6 | 19 -0.5 | 0.397 -0.03 | 260 -10 | 11 +5.5 | 91 +2.7 | close | + | |
| Audax 180040A | 22.4 +2.9 | 0.392 -0.04 | 239.6 -30.4 | 8 +2.5 | 88.7 +0.4 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| Max Speaker PV-1230 8 Ohms | 20 +0.5 | 0.452 +0.02 | 317 +47 | 4 -1.5 | 90.5 +2.2 | usable | Xmax 4 mm < 5.5 mm: lower excursion-limited SPL | + |
| Siare 31SPCS | 22 +2.5 | 0.494 +0.06 | 212 -58 | 6 +0.5 | 89 +0.7 | usable | + | |
| Audiotechnology FLEXUNIT 12D775210KAP Custom | 19 -0.5 | 0.388 -0.04 | 340 +70 | 8.6 +3.1 | 91.1 +2.8 | usable | + | |
| SB Acoustics SB34NRX75-6 vp | 22.2 +2.7 | 0.444 +0.01 | 240 -30 | 11 +5.5 | 92 +3.7 | usable | + | |
| Davis 31ST12M | 24 +4.5 | 0.399 -0.03 | 260 -10 | 8.9 +3.4 | 91.6 +3.3 | usable | + | |
| Davis 31ST12M v2011 | 24 +4.5 | 0.399 -0.03 | 260 -10 | 8.9 +3.4 | 91.6 +3.3 | usable | + |
Compare the closest 3 against the L12P48 →
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.