B&C 21IPAL - OEM vp
Thiele-Small parameters
| Nominal size | 21.5" |
|---|---|
| Impedance | 1 Ω |
| Fs | 37 Hz |
| Qts | 0.211 |
| Qes | 0.22 |
| Qms | 4.9 |
| Vas | 154.9 L |
| Sd | 1680 cm² |
| Xmax | 5.9 mm |
| Re | 0.7 Ω |
| Bl | 18.7 T·m |
| Mms | 472.6 g |
| Pe | 2500 W |
| Sensitivity | 108.1 dB |
Alignment hint
| EBP | 168 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 15.1 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 |
|---|---|---|---|---|---|---|---|---|
| B&C 21 DS 115 - 4 | 30 -7 | 0.196 -0.01 | 274 +119.1 | 6.9 +1 | 103.3 -4.8 | usable | 4 Ω vs 1 Ω: amp load changes · 1700 W vs 2500 W: lower power handling | + |
| LaVoce SAN214.50LD vp | 30 -7 | 0.223 +0.01 | 250 +95.1 | 7.2 +1.3 | 98.4 -9.7 | risky | 8 Ω vs 1 Ω: amp load changes · 1700 W vs 2500 W: lower power handling | + |
| B&C 21 SW 152 v2013 | 32 -5 | 0.297 +0.09 | 200 +45.1 | 7.5 +1.6 | 99.5 -8.6 | risky | 4 Ω vs 1 Ω: amp load changes | + |
| B&C 21 SW 152 | 32 -5 | 0.297 +0.09 | 198.2 +43.3 | 7.5 +1.6 | 98.9 -9.2 | risky | 4 Ω vs 1 Ω: amp load changes | + |
| 18 Sound 21NLW9000C | 29 -8 | 0.248 +0.04 | 257 +102.1 | 8.1 +2.2 | 100.5 -7.6 | risky | 4 Ω vs 1 Ω: amp load changes · 1800 W vs 2500 W: lower power handling | + |
| B&C 21 DS 115 | 30 -7 | 0.234 +0.02 | 269 +114.1 | 7.6 +1.7 | 98.7 -9.4 | risky | 8 Ω vs 1 Ω: amp load changes · 1700 W vs 2500 W: lower power handling | + |
| RCF LF 21N551 | 35 -2 | 0.331 +0.12 | 200 +45.1 | 7.7 +1.8 | 97.7 -10.4 | risky | 8 Ω vs 1 Ω: amp load changes | + |
| Dayton Audio PSS545HE-4 VORTEX | 28.8 -8.2 | 0.27 +0.06 | 212.1 +57.2 | 8.6 +2.7 | 97.8 -10.3 | risky | 4 Ω vs 1 Ω: amp load changes | + |
| B&C 21 SW 150 | 29 -8 | 0.261 +0.05 | 254 +99.1 | 7.5 +1.6 | 99.4 -8.7 | risky | 4 Ω vs 1 Ω: amp load changes · 1500 W vs 2500 W: lower power handling | + |
| Dayton Audio HTS545HE-4 KRAKEN | 26.3 -10.7 | 0.28 +0.07 | 179 +24.1 | 8.8 +2.9 | 95.7 -12.4 | risky | 4 Ω vs 1 Ω: amp load changes | + |
Compare the closest 3 against the 21IPAL - OEM vp →
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.