BMS 12S330 v2016
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 28.6 Hz |
| Qts | 0.24 |
| Qes | 0.25 |
| Qms | 5.9 |
| Vas | 85.5 L |
| Sd | 498 cm² |
| Xmax | 8 mm |
| Re | 6 Ω |
| Bl | 23.3 T·m |
| Mms | 125.9 g |
| Pe | 600 W |
| Sensitivity | 92.3 dB |
Alignment hint
| EBP | 114 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 11.1 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 |
|---|---|---|---|---|---|---|---|---|
| BMS 12S330 | 28.6 = | 0.24 = | 85.5 = | 8 = | 96 +3.7 | close | + | |
| BMS 12S330 v2018 | 28.6 = | 0.295 +0.05 | 81.4 -4.1 | 8 = | 91.1 -1.2 | close | + | |
| Helix P12W PRECISION | 27 -1.6 | 0.25 +0.01 | 72 -13.5 | 8.5 +0.5 | 89 -3.3 | close | 4 Ω vs 8 Ω: amp load changes · 400 W vs 600 W: lower power handling | + |
| PHL Audio 4020 | 29 +0.4 | 0.299 +0.06 | 92 +6.5 | 7 -1 | 92.1 -0.2 | usable | 450 W vs 600 W: lower power handling · Xmax 7 mm < 8 mm: lower excursion-limited SPL | + |
| PHL Audio 4021 v2017 | 30 +1.4 | 0.281 +0.04 | 96 +10.5 | 7 -1 | 93 +0.7 | usable | 450 W vs 600 W: lower power handling · Xmax 7 mm < 8 mm: lower excursion-limited SPL | + |
| Focal 13W 8711 | 28.8 +0.2 | 0.328 +0.09 | 87.1 +1.6 | 7.9 -0.1 | 93.4 +1.1 | usable | 4 Ω vs 8 Ω: amp load changes · 400 W vs 600 W: lower power handling · Xmax 7.9 mm < 8 mm: lower excursion-limited SPL | + |
| Focal 13W 8711 vp | 28.8 +0.2 | 0.328 +0.09 | 87.1 +1.6 | 7.9 -0.1 | 93.4 +1.1 | usable | 4 Ω vs 8 Ω: amp load changes · 400 W vs 600 W: lower power handling · Xmax 7.9 mm < 8 mm: lower excursion-limited SPL | + |
| Raveland BSW 124-II | 28 -0.6 | 0.252 +0.01 | 91.4 +5.9 | 5.4 -2.6 | 94.7 +2.4 | usable | 4 Ω vs 8 Ω: amp load changes · 200 W vs 600 W: lower power handling · Xmax 5.4 mm < 8 mm: lower excursion-limited SPL | + |
| JBL 1200FE-8 | 27 -1.6 | 0.256 +0.02 | 125 +39.5 | 10 +2 | 93.3 +1 | usable | + | |
| BMS 12S305 | 35 +6.4 | 0.265 +0.03 | 82 -3.5 | 11 +3 | 95 +2.7 | usable | + |
Compare the closest 3 against the 12S330 v2016 →
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.