BMS 12S305
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 35 Hz |
| Qts | 0.265 |
| Qes | 0.278 |
| Qms | 5.8 |
| Vas | 82 L |
| Sd | 515 cm² |
| Xmax | 11 mm |
| Re | 5.4 Ω |
| Bl | 20.14 T·m |
| Mms | 95 g |
| Pe | 800 W |
| Sensitivity | 95 dB |
Alignment hint
| EBP | 126 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 13.4 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 12N804 | 39 +4 | 0.29 +0.02 | 71 -11 | 8 -3 | 95 = | usable | Xmax 8 mm < 11 mm: lower excursion-limited SPL | + |
| 18 Sound 12NLW9410 | 42 +7 | 0.26 -0.01 | 55 -27 | 11 = | 95 = | usable | + | |
| RCF L 12P300 | 40 +5 | 0.242 -0.02 | 81 -1 | 7.8 -3.2 | 96.7 +1.7 | usable | Xmax 7.8 mm < 11 mm: lower excursion-limited SPL | + |
| Sica 12 PFS 4 | 39 +4 | 0.26 -0.01 | 55.6 -26.4 | 9 -2 | 94.8 -0.2 | usable | Xmax 9 mm < 11 mm: lower excursion-limited SPL | + |
| SICA 12 S 2.5 CS | 33 -2 | 0.265 = | 93.7 +11.7 | 6 -5 | 94 -1 | usable | 300 W vs 800 W: lower power handling · Xmax 6 mm < 11 mm: lower excursion-limited SPL | + |
| BMS 12S330 | 28.6 -6.4 | 0.24 -0.03 | 85.5 +3.5 | 8 -3 | 96 +1 | usable | 600 W vs 800 W: lower power handling · Xmax 8 mm < 11 mm: lower excursion-limited SPL | + |
| 18 Sound 12NTLX3500 | 39 +4 | 0.33 +0.07 | 79.6 -2.4 | 7.9 -3.1 | 95.5 +0.5 | usable | 600 W vs 800 W: lower power handling · Xmax 7.9 mm < 11 mm: lower excursion-limited SPL | + |
| Eminence KappaLITE 3012LF | 37 +2 | 0.32 +0.05 | 106.65 +24.65 | 9.1 -1.9 | 95.5 +0.5 | usable | 450 W vs 800 W: lower power handling · Xmax 9.1 mm < 11 mm: lower excursion-limited SPL | + |
| Beyma 12LW30/N v2015 | 42 +7 | 0.269 = | 84 +2 | 6.1 -4.9 | 96.3 +1.3 | usable | 450 W vs 800 W: lower power handling · Xmax 6.1 mm < 11 mm: lower excursion-limited SPL | + |
| Beyma POWER 12 COMPETITION | 29 -6 | 0.27 +0.01 | 122 +40 | 9 -2 | 95.1 +0.1 | usable | 500 W vs 800 W: lower power handling · Xmax 9 mm < 11 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 12S305 →
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.