B&C 15 PK 40
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 47 Hz |
| Qts | 0.31 |
| Qes | 0.33 |
| Qms | 5.1 |
| Vas | 140 L |
| Sd | 855 cm² |
| Xmax | 4 mm |
| Re | 5.1 Ω |
| Bl | 19.6 T·m |
| Mms | 83.9 g |
| Pe | 400 W |
| Sensitivity | 100.4 dB |
Alignment hint
| EBP | 142 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 33.3 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 15CX1000 | 48 +1 | 0.304 -0.01 | 132.5 -7.5 | 6 +2 | 100.2 -0.2 | close | + | |
| Ciare PW389 | 45 -2 | 0.323 +0.01 | 138 -2 | 4.3 +0.3 | 99.4 -1 | close | + | |
| Beyma 15 GF 200 | 45 -2 | 0.324 +0.01 | 141 +1 | 4 = | 99.1 -1.3 | close | 250 W vs 400 W: lower power handling | + |
| Oberton 15LX400 | 48.8 +1.8 | 0.337 +0.03 | 140 = | 5.2 +1.2 | 100.2 -0.2 | close | + | |
| Electro-Voice DL15X | 47.3 +0.3 | 0.337 +0.03 | 136 -4 | 4.1 +0.1 | 99.1 -1.3 | close | + | |
| Electro-Voice DL15BFH | 45.6 -1.4 | 0.291 -0.02 | 127.4 -12.6 | 4.1 +0.1 | 100.1 -0.3 | close | + | |
| JBL 2035H | 48 +1 | 0.336 +0.03 | 140.5 +0.5 | 4.9 +0.9 | 101.5 +1.1 | close | 4 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 15NTLW2500 | 45 -2 | 0.3 -0.01 | 143 +3 | 8 +4 | 100.5 +0.1 | close | + | |
| Oberton 15B450 | 45.1 -1.9 | 0.285 -0.03 | 146.9 +6.9 | 5.4 +1.4 | 100.3 -0.1 | close | + | |
| 18 Sound 15MB1000 | 48 +1 | 0.31 = | 132.5 -7.5 | 6 +2 | 98 -2.4 | close | + |
Compare the closest 3 against the 15 PK 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.