Audax LFH508
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 32 Hz |
| Qts | 0.27 |
| Qes | 0.3 |
| Qms | 2.75 |
| Vas | 232 L |
| Sd | 491 cm² |
| Xmax | 2.5 mm |
| Re | 5.2 Ω |
| Bl | 11.2 T·m |
| Mms | 36 g |
| Pe | 100 W |
| Sensitivity | 97.9 dB |
Alignment hint
| EBP | 107 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 39.6 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 |
|---|---|---|---|---|---|---|---|---|
| Goodmans AXIOM 301 vp | 36.4 +4.4 | 0.277 +0.01 | 234.1 +2.1 | 3.2 +0.7 | 98 +0.1 | close | 40 W vs 100 W: lower power handling | + |
| Audax PR330M0 | 28 -4 | 0.269 = | 264 +32 | 4 +1.5 | 96.5 -1.4 | close | + | |
| Monacor SP-300P | 30 -2 | 0.305 +0.03 | 266 +34 | 2.5 = | 95.8 -2.1 | usable | + | |
| Beyma SM212 | 34 +2 | 0.258 -0.01 | 198 -34 | 8.2 +5.7 | 98 +0.1 | usable | + | |
| EMS LB12EX_10V | 34 +2 | 0.286 +0.02 | 200 -32 | 3 +0.5 | 94.5 -3.4 | usable | 16 Ω vs 8 Ω: amp load changes · 40 W vs 100 W: lower power handling | + |
| Davis 31TCA12 v2009 | 32.5 +0.5 | 0.31 +0.04 | 222 -10 | 6 +3.5 | 95.9 -2 | usable | + | |
| Davis 31TCA12 vp rc | 32.5 +0.5 | 0.314 +0.04 | 222 -10 | 6 +3.5 | 96.2 -1.7 | usable | + | |
| Monacor SP-330PAX | 33 +1 | 0.238 -0.03 | 190 -42 | 4.5 +2 | 97.4 -0.5 | usable | + | |
| Fostex L 345 | 34 +2 | 0.242 -0.03 | 197 -35 | 5.7 +3.2 | 97.3 -0.6 | usable | + | |
| Focal AUDIOM 12AX | 30.7 -1.3 | 0.329 +0.06 | 226 -6 | 4.5 +2 | 95.9 -2 | usable | + |
Compare the closest 3 against the LFH508 →
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.