PHL Audio 4021 v2017
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.281 |
| Qes | 0.29 |
| Qms | 8.9 |
| Vas | 96 L |
| Sd | 530 cm² |
| Xmax | 7 mm |
| Re | 5.6 Ω |
| Bl | 20.5 T·m |
| Mms | 115.4 g |
| Pe | 450 W |
| Sensitivity | 93 dB |
Alignment hint
| EBP | 103 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 18 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 |
|---|---|---|---|---|---|---|---|---|
| PHL Audio 4020 | 29 -1 | 0.299 +0.02 | 92 -4 | 7 = | 92.1 -0.9 | close | + | |
| SICA 12 SR 3 PL vp | 28.7 -1.3 | 0.317 +0.04 | 101.2 +5.2 | 7 = | 92.4 -0.6 | close | 350 W vs 450 W: lower power handling | + |
| Magnat SUB 300 SUPREME | 30 = | 0.289 +0.01 | 110 +14 | 7.6 +0.6 | 95.5 +2.5 | close | 4 Ω vs 8 Ω: amp load changes · 300 W vs 450 W: lower power handling | + |
| SICA 12SR3PL | 27.4 -2.6 | 0.27 -0.01 | 103.1 +7.1 | 7 = | 94.8 +1.8 | close | 4 Ω vs 8 Ω: amp load changes | + |
| SICA 12 S 2.5 CS | 33 +3 | 0.265 -0.02 | 93.7 -2.3 | 6 -1 | 94 +1 | close | 300 W vs 450 W: lower power handling · Xmax 6 mm < 7 mm: lower excursion-limited SPL | + |
| Magnat XTC300 | 30 = | 0.317 +0.04 | 81 -15 | 6.9 -0.1 | 93.8 +0.8 | close | 4 Ω vs 8 Ω: amp load changes · 300 W vs 450 W: lower power handling · Xmax 6.9 mm < 7 mm: lower excursion-limited SPL | + |
| Focal 13W 8711 | 28.8 -1.2 | 0.328 +0.05 | 87.1 -8.9 | 7.9 +0.9 | 93.4 +0.4 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Focal 13W 8711 vp | 28.8 -1.2 | 0.328 +0.05 | 87.1 -8.9 | 7.9 +0.9 | 93.4 +0.4 | close | 4 Ω vs 8 Ω: amp load changes | + |
| BMS 12S330 v2018 | 28.6 -1.4 | 0.295 +0.01 | 81.4 -14.6 | 8 +1 | 91.1 -1.9 | close | + | |
| Mivoc AW 3000 | 27 -3 | 0.305 +0.02 | 97 +1 | 5.9 -1.1 | 93.9 +0.9 | close | 4 Ω vs 8 Ω: amp load changes · 180 W vs 450 W: lower power handling · Xmax 5.9 mm < 7 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 4021 v2017 →
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.