B&C 8PE21
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 8 Ω |
| Fs | 87 Hz |
| Qts | 0.19 |
| Qes | 0.2 |
| Qms | 3.8 |
| Vas | 13 L |
| Sd | 220 cm² |
| Xmax | 2.5 mm |
| Re | 5.6 Ω |
| Bl | 16.6 T·m |
| Mms | 18 g |
| Pe | 200 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 435 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 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 |
|---|---|---|---|---|---|---|---|---|
| LaVoce MAF082.00 | 85 -2 | 0.2 +0.01 | 11.3 -1.7 | 2.6 +0.1 | 98.5 +0.5 | close | + | |
| 18 Sound 8NTLW2000 | 71 -16 | 0.21 +0.02 | 13 = | 4.4 +1.9 | 97.5 -0.5 | usable | + | |
| Oberton 8M250 | 74.37 -12.63 | 0.201 +0.01 | 15.63 +2.63 | 2.75 +0.25 | 99.5 +1.5 | usable | + | |
| LaVoce MAF082.00-16 | 88 +1 | 0.24 +0.05 | 10.89 -2.11 | 2.3 -0.2 | 98.5 +0.5 | usable | 16 Ω vs 8 Ω: amp load changes · Xmax 2.3 mm < 2.5 mm: lower excursion-limited SPL | + |
| B&C 8FW51 | 74 -13 | 0.21 +0.02 | 12 -1 | 6 +3.5 | 97 -1 | usable | + | |
| Beyma 8MC500Nd | 69 -18 | 0.18 -0.01 | 15.9 +2.9 | 5 +2.5 | 98 = | usable | + | |
| 18 Sound 8M400F | 89 +2 | 0.26 +0.07 | 13.7 +0.7 | 3 +0.5 | 100.5 +2.5 | usable | + | |
| LaVoce WAF082.01 | 76 -11 | 0.21 +0.02 | 10.21 -2.79 | 5.8 +3.3 | 97 -1 | usable | + | |
| B&C 8MDN51 | 70 -17 | 0.2 +0.01 | 16 +3 | 6 +3.5 | 97 -1 | usable | + | |
| B&C 8NW51 | 74 -13 | 0.17 -0.02 | 11 -2 | 6 +3.5 | 96.5 -1.5 | usable | + |
Compare the closest 3 against the 8PE21 →
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.