BMS 12N804
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 39 Hz |
| Qts | 0.29 |
| Qes | 0.31 |
| Qms | 4.6 |
| Vas | 71 L |
| Sd | 531 cm² |
| Xmax | 8 mm |
| Re | 5.7 Ω |
| Bl | 20.4 T·m |
| Mms | 92 g |
| Pe | 1100 W |
| Sensitivity | 95 dB |
Alignment hint
| EBP | 126 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 14.4 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma 12LX60 | 42 +3 | 0.3 +0.01 | 66 -5 | 9 +1 | 93.8 -1.2 | close | 700 W vs 1100 W: lower power handling | + |
| 18 Sound 12NTLX3500 | 39 = | 0.33 +0.04 | 79.6 +8.6 | 7.9 -0.1 | 95.5 +0.5 | close | 600 W vs 1100 W: lower power handling · Xmax 7.9 mm < 8 mm: lower excursion-limited SPL | + |
| Sica 12 PFS 4 | 39 = | 0.26 -0.03 | 55.6 -15.4 | 9 +1 | 94.8 -0.2 | close | + | |
| 18 Sound 12NTLS3500 | 41 +2 | 0.34 +0.05 | 63 -8 | 7.9 -0.1 | 94.5 -0.5 | close | 4 Ω vs 8 Ω: amp load changes · 750 W vs 1100 W: lower power handling · Xmax 7.9 mm < 8 mm: lower excursion-limited SPL | + |
| BMS 12S305 | 35 -4 | 0.265 -0.02 | 82 +11 | 11 +3 | 95 = | close | 800 W vs 1100 W: lower power handling | + |
| 18 Sound 12W750 | 49 +10 | 0.28 -0.01 | 73 +2 | 8 = | 97 +2 | close | 600 W vs 1100 W: lower power handling | + |
| Precision Devices PD.12SB30 | 47 +8 | 0.31 +0.02 | 66.82 -4.18 | 7 -1 | 95.2 +0.2 | close | 400 W vs 1100 W: lower power handling · Xmax 7 mm < 8 mm: lower excursion-limited SPL | + |
| the box Speaker 12-280/8-W | 38 -1 | 0.304 +0.01 | 75.7 +4.7 | 5.5 -2.5 | 94 -1 | close | 280 W vs 1100 W: lower power handling · Xmax 5.5 mm < 8 mm: lower excursion-limited SPL | + |
| Precision Devices PD.123C01 | 46 +7 | 0.32 +0.03 | 66.82 -4.18 | 7 -1 | 94.9 -0.1 | usable | 400 W vs 1100 W: lower power handling · Xmax 7 mm < 8 mm: lower excursion-limited SPL | + |
| Eminence IMPERO 12 A | 42.8 +3.8 | 0.322 +0.03 | 70.2 -0.8 | 6.2 -1.8 | 95.8 +0.8 | usable | Xmax 6.2 mm < 8 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 12N804 →
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.