Celestion BL15-400X
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 54.2 Hz |
| Qts | 0.592 |
| Qes | 0.709 |
| Qms | 3.578 |
| Vas | 110.9 L |
| Sd | 793 cm² |
| Xmax | 4.8 mm |
| Re | 5.8 Ω |
| Bl | 13.8 T·m |
| Mms | 68.6 g |
| Pe | 400 W |
| Sensitivity | 97.3 dB |
Alignment hint
| EBP | 76 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 259.9 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 |
|---|---|---|---|---|---|---|---|---|
| JBL 615H | 55 +0.8 | 0.603 +0.01 | 112 +1.1 | 3.7 -1.1 | 98.1 +0.8 | close | 175 W vs 400 W: lower power handling · Xmax 3.7 mm < 4.8 mm: lower excursion-limited SPL | + |
| the box Speaker 15-300/8-A | 52.6 -1.6 | 0.64 +0.05 | 100.3 -10.6 | 4.6 -0.2 | 96.8 -0.5 | close | 300 W vs 400 W: lower power handling · Xmax 4.6 mm < 4.8 mm: lower excursion-limited SPL | + |
| Focal 38KXSPL | 45.8 -8.4 | 0.55 -0.04 | 116.4 +5.5 | 5.5 +0.7 | 98 +0.7 | close | 4 Ω vs 8 Ω: amp load changes | + |
| RCF LF 15G302 vp baptiste | 56.8 +2.6 | 0.561 -0.03 | 87 -23.9 | 6 +1.2 | 97.1 -0.2 | close | + | |
| DAP Audio AB-15 | 46.7 -7.5 | 0.546 -0.05 | 122.3 +11.4 | 5.5 +0.7 | 95.4 -1.9 | usable | + | |
| Beyma 15CM V2 | 49 -5.2 | 0.49 -0.1 | 104 -6.9 | 7 +2.2 | 97 -0.3 | usable | + | |
| Beyma 15CMV2 v2021 | 49 -5.2 | 0.485 -0.11 | 104 -6.9 | 4.5 -0.3 | 96.7 -0.6 | usable | Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL | + |
| P.Audio BM-15LF | 47 -7.2 | 0.668 +0.08 | 123.4 +12.5 | 7.1 +2.3 | 96.5 -0.8 | usable | + | |
| Bose 38 CM CAR AUDIO vp | 46 -8.2 | 0.526 -0.07 | 108.8 -2.1 | 4.5 -0.3 | 94.6 -2.7 | usable | 250 W vs 400 W: lower power handling · Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL | + |
| Audax PR380T0 | 52 -2.2 | 0.635 +0.04 | 130 +19.1 | 3.3 -1.5 | 97.1 -0.2 | usable | 150 W vs 400 W: lower power handling · Xmax 3.3 mm < 4.8 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the BL15-400X →
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.