B&C 15 PZB 40
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 39 Hz |
| Qts | 0.288 |
| Qes | 0.3 |
| Qms | 7.4 |
| Vas | 112 L |
| Sd | 855 cm² |
| Xmax | 6.1 mm |
| Re | 5.3 Ω |
| Bl | 25.7 T·m |
| Mms | 152.4 g |
| Pe | 700 W |
| Sensitivity | 97.2 dB |
Alignment hint
| EBP | 130 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 22.3 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 15 PZB 100 | 39 = | 0.287 = | 110 -2 | 6 -0.1 | 97.2 = | close | Xmax 6 mm < 6.1 mm: lower excursion-limited SPL | + |
| B&C 15PZB100 | 39 = | 0.29 = | 110 -2 | 8 +1.9 | 97 -0.2 | close | + | |
| PHL Audio 6251MND | 39 = | 0.293 +0.01 | 120 +8 | 7.4 +1.3 | 97.4 +0.2 | close | + | |
| PHL Audio 6252MND | 39 = | 0.293 +0.01 | 120 +8 | 7.4 +1.3 | 97.4 +0.2 | close | + | |
| Oberton 15XB1000 | 37.2 -1.8 | 0.283 -0.01 | 111.02 -0.98 | 9 +2.9 | 97 -0.2 | close | + | |
| Oberton 15NXB1000 | 38.34 -0.66 | 0.283 -0.01 | 105.5 -6.5 | 9 +2.9 | 97 -0.2 | close | + | |
| PHL Audio 6121M | 37 -2 | 0.272 -0.02 | 108 -4 | 6.6 +0.5 | 96.4 -0.8 | close | + | |
| B&C 15 TBX 100 | 35 -4 | 0.284 = | 113 +1 | 7.6 +1.5 | 96 -1.2 | close | + | |
| BMS 15S435 | 38 -1 | 0.28 -0.01 | 129 +17 | 8 +1.9 | 97 -0.2 | close | + | |
| LaVoce WAF154.00 | 38 -1 | 0.294 +0.01 | 103 -9 | 9 +2.9 | 96 -1.2 | close | + |
Compare the closest 3 against the 15 PZB 40 →
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.