Hertz Audio ES F30.5
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 38 Hz |
| Qts | 0.6 |
| Qes | 0.69 |
| Qms | 4.44 |
| Vas | 60 L |
| Sd | 514 cm² |
| Xmax | 6 mm |
| Re | 2.84 Ω |
| Bl | 10.4 T·m |
| Mms | 110 g |
| Pe | 350 W |
| Sensitivity | 88.6 dB |
Alignment hint
| EBP | 55 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 154.3 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| Rockford Fosgate R2D4-12 | 34.9 -3.1 | 0.605 +0.01 | 68.8 +8.8 | 6.5 +0.5 | 88.9 +0.3 | close | 8 Ω vs 4 Ω: amp load changes · 250 W vs 350 W: lower power handling | + |
| Peerless SBS-300F38CP01-04 | 36 -2 | 0.611 +0.01 | 55.8 -4.2 | 5.9 -0.1 | 90.9 +2.3 | close | 250 W vs 350 W: lower power handling · Xmax 5.9 mm < 6 mm: lower excursion-limited SPL | + |
| MTX Audio RTS12-04 | 33.5 -4.5 | 0.631 +0.03 | 58.4 -1.6 | 5.8 -0.2 | 89.5 +0.9 | close | 250 W vs 350 W: lower power handling · Xmax 5.8 mm < 6 mm: lower excursion-limited SPL | + |
| JBL S2-1224 | 32.4 -5.6 | 0.581 -0.02 | 59.7 -0.3 | 5.3 -0.7 | 89.1 +0.5 | close | 8 Ω vs 4 Ω: amp load changes · 275 W vs 350 W: lower power handling · Xmax 5.3 mm < 6 mm: lower excursion-limited SPL | + |
| Focal R-300S | 32.6 -5.4 | 0.582 -0.02 | 53.9 -6.1 | 6 = | 89.6 +1 | close | + | |
| Cerwin-Vega VEGA 124 | 30.3 -7.7 | 0.612 +0.01 | 60.3 +0.3 | 7 +1 | 86.4 -2.2 | close | 8 Ω vs 4 Ω: amp load changes | + |
| JBL GT5-12 vp | 29 -9 | 0.582 -0.02 | 54.2 -5.8 | 6.7 +0.7 | 88.1 -0.5 | usable | 8 Ω vs 4 Ω: amp load changes · 275 W vs 350 W: lower power handling | + |
| Sony XS-L124P5B | 33.1 -4.9 | 0.626 +0.03 | 44.5 -15.5 | 6 = | 88.8 +0.2 | usable | + | |
| Dayton Audio LS12-44 | 33.7 -4.3 | 0.503 -0.1 | 56.6 -3.4 | 5.6 -0.4 | 88.1 -0.5 | usable | 8 Ω vs 4 Ω: amp load changes · 250 W vs 350 W: lower power handling · Xmax 5.6 mm < 6 mm: lower excursion-limited SPL | + |
| Pioneer TS-A30S4 | 39.2 +1.2 | 0.7 +0.1 | 56.1 -3.9 | 6.6 +0.6 | 92.1 +3.5 | usable | + |
Compare the closest 3 against the ES F30.5 →
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.