B&C 21SW152
Thiele-Small parameters
| Nominal size | 21" |
|---|---|
| Impedance | 8 Ω |
| Fs | 32 Hz |
| Qts | 0.36 |
| Qes | 0.38 |
| Qms | 6.4 |
| Vas | 200 L |
| Sd | 1680 cm² |
| Xmax | 15 mm |
| Re | 6 Ω |
| Bl | 39 T·m |
| Mms | 450 g |
| Pe | 2000 W |
| Sensitivity | 96 dB |
Alignment hint
| EBP | 84 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 70 L |
EBP 50-100: works in either a sealed or ported 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 SAN215.30 | 35 +3 | 0.33 -0.03 | 200 = | 14.9 -0.1 | 95.7 -0.3 | close | Xmax 14.9 mm < 15 mm: lower excursion-limited SPL | + |
| B&C 21SW152 | 32 = | 0.3 -0.06 | 200 = | 15 = | 96 = | close | 4 Ω vs 8 Ω: amp load changes | + |
| RCF LF21N551 | 35 +3 | 0.33 -0.03 | 200 = | 15 = | 97 +1 | close | + | |
| 18 Sound 21LW2600 | 27 -5 | 0.37 +0.01 | 190 -10 | 14.6 -0.4 | 97 +1 | close | 4 Ω vs 8 Ω: amp load changes · Xmax 14.6 mm < 15 mm: lower excursion-limited SPL | + |
| 18 Sound 21NLW4100 | 34 +2 | 0.4 +0.04 | 219 +19 | 15.2 +0.2 | 97 +1 | close | 4 Ω vs 8 Ω: amp load changes · 1500 W vs 2000 W: lower power handling | + |
| Fane Colossus Prime 21NDXL | 33 +1 | 0.36 = | 241 +41 | 14 -1 | 98 +2 | close | 1500 W vs 2000 W: lower power handling · Xmax 14 mm < 15 mm: lower excursion-limited SPL | + |
| 18 Sound 21NTLW5000 | 31 -1 | 0.36 = | 270 +70 | 17.5 +2.5 | 97 +1 | close | + | |
| B&C 21SW115 | 33 +1 | 0.36 = | 278 +78 | 14 -1 | 97 +1 | close | 4 Ω vs 8 Ω: amp load changes · Xmax 14 mm < 15 mm: lower excursion-limited SPL | + |
| 18 Sound 21NLW9001 | 31 -1 | 0.34 -0.02 | 272 +72 | 14 -1 | 95 -1 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 14 mm < 15 mm: lower excursion-limited SPL | + |
| Eminence NSW6021-6 | 29 -3 | 0.31 -0.05 | 224.58 +24.58 | 21 +6 | 97 +1 | usable | 6 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the 21SW152 →
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.