RCF LF 21N451
Paramètres Thiele-Small
| Taille nominale | 21.5" |
|---|---|
| Impédance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.239 |
| Qes | 0.25 |
| Qms | 5.5 |
| Vas | 440 L |
| Sd | 1729.1 cm² |
| Xmax | 8.9 mm |
| Re | 5.5 Ω |
| Bl | 33.3 T·m |
| Mms | 268.1 g |
| Pe | 1500 W |
| Sensibilité | 100.4 dB |
Indication d'alignement
| EBP | 120 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 56.7 L |
EBP > 100 : favorise un alignement bass-reflex.
Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.
Candidats de substitution
| HP | Fs (Hz) | Qts | Vas (L) | Xmax (mm) | Sens (dB) | Adéquation | Notes | Comparer |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 21LW400 | 28 -2 | 0.234 = | 385 -55 | 9.3 +0.4 | 99.5 -0.9 | close | + | |
| RCF LF 21N451 v2017 | 30 = | 0.259 +0.02 | 375 -65 | 8.6 -0.3 | 99.3 -1.1 | close | Xmax 8.6 mm < 8.9 mm: lower excursion-limited SPL | + |
| Beyma 21LEX1600/Nd | 30 = | 0.272 +0.03 | 394 -46 | 9.3 +0.4 | 99.3 -1.1 | close | + | |
| 18 Sound 21NLW9000C | 29 -1 | 0.248 +0.01 | 257 -183 | 8.1 -0.8 | 100.5 +0.1 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 8.1 mm < 8.9 mm: lower excursion-limited SPL | + |
| B&C 21 DS 115 | 30 = | 0.234 = | 269 -171 | 7.6 -1.3 | 98.7 -1.7 | usable | Xmax 7.6 mm < 8.9 mm: lower excursion-limited SPL | + |
| Beyma 21PW1400FE | 30 = | 0.343 +0.1 | 401.5 -38.5 | 10 +1.1 | 98.6 -1.8 | usable | + | |
| Beyma 21QLEX1600/Fe | 30 = | 0.281 +0.04 | 309 -131 | 8.4 -0.5 | 98.1 -2.3 | usable | Xmax 8.4 mm < 8.9 mm: lower excursion-limited SPL | + |
| B&C 21 SW 150 | 29 -1 | 0.261 +0.02 | 254 -186 | 7.5 -1.4 | 99.4 -1 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 7.5 mm < 8.9 mm: lower excursion-limited SPL | + |
| PD PDN 2151 | 31.4 +1.4 | 0.276 +0.04 | 303.4 -136.6 | 6.7 -2.2 | 99 -1.4 | usable | 1000 W vs 1500 W: lower power handling · Xmax 6.7 mm < 8.9 mm: lower excursion-limited SPL | + |
| Precision Devices PDN 2151 | 31.4 +1.4 | 0.276 +0.04 | 303.4 -136.6 | 6.7 -2.2 | 99 -1.4 | usable | 1000 W vs 1500 W: lower power handling · Xmax 6.7 mm < 8.9 mm: lower excursion-limited SPL | + |
Comparer les 3 plus proches avec le LF 21N451 →
Classé par similarité de paramètres uniquement (Qts, Fs, Vas, Xmax, sensibilité). Même taille nominale requise. Une indication, pas une simulation, modélisez l'échange avant de couper ou d'acheter.
Utilisé dans les caissons (0)
No enclosure in the catalog uses this driver yet.