Fostex 12w150
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 60 Hz |
| Qts | 0.411 |
| Qes | 0.43 |
| Qms | 9.52 |
| Vas | 74 L |
| Sd | 506.7 cm² |
| Xmax | 1.2 mm |
| Re | 6 Ω |
| Bl | 13.4 T·m |
| Mms | 34.2 g |
| Pe | 60 W |
| Sensitivity | 98.9 dB |
Alignment hint
| EBP | 140 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 37.8 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 |
|---|---|---|---|---|---|---|---|---|
| Celestion TF 1218TC | 56 -4 | 0.408 = | 80.2 +6.2 | 1.5 +0.3 | 98.4 -0.5 | close | + | |
| Celestion TF 1218TC v2008 | 56 -4 | 0.408 = | 80.2 +6.2 | 1.5 +0.3 | 98.4 -0.5 | close | + | |
| Peavey 1203-8 v1993 | 59.4 -0.6 | 0.381 -0.03 | 69 -5 | 1 -0.2 | 98.7 -0.2 | close | Xmax 1 mm < 1.2 mm: lower excursion-limited SPL | + |
| RCF L 12/568H | 58 -2 | 0.409 = | 72 -2 | 4 +2.8 | 98.1 -0.8 | close | + | |
| RCF L12/568H | 58.8 -1.2 | 0.41 = | 72 -2 | 4 +2.8 | 97.1 -1.8 | close | + | |
| Celestion TF 1220 | 55 -5 | 0.416 +0.01 | 84.7 +10.7 | 2 +0.8 | 98.4 -0.5 | close | + | |
| Fertin Acoustics LB 31 SONO | 59.5 -0.5 | 0.407 = | 70 -4 | 4 +2.8 | 97.5 -1.4 | close | + | |
| Celestion TF1220 | 55.8 -4.2 | 0.389 -0.02 | 72.79 -1.21 | 2 +0.8 | 96.4 -2.5 | close | + | |
| Eminence DELTA-12A | 55 -5 | 0.43 +0.02 | 81.3 +7.3 | 2.4 +1.2 | 98.3 -0.6 | close | + | |
| SICA 12 N 2.5 PL | 55.3 -4.7 | 0.395 -0.02 | 79.7 +5.7 | 3.5 +2.3 | 98.8 -0.1 | close | + |
Compare the closest 3 against the 12w150 →
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.