PHL Audio 4071-1
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 47 Hz |
| Qts | 0.245 |
| Qes | 0.26 |
| Qms | 4.14 |
| Vas | 57.8 L |
| Sd | 493 cm² |
| Xmax | 4.7 mm |
| Re | 5.5 Ω |
| Bl | 20.5 T·m |
| Mms | 67.6 g |
| Pe | 400 W |
| Sensitivity | 97.2 dB |
Alignment hint
| EBP | 181 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 7.9 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 |
|---|---|---|---|---|---|---|---|---|
| BMS 12CN682 | 46 -1 | 0.258 +0.01 | 58 +0.2 | 5.5 +0.8 | 96.7 -0.5 | close | + | |
| B&C 12NDL88 | 48 +1 | 0.24 -0.01 | 57 -0.8 | 8 +3.3 | 97 -0.2 | close | 4 Ω vs 8 Ω: amp load changes | + |
| B&C 12NDL88-4 | 48 +1 | 0.24 -0.01 | 57 -0.8 | 8 +3.3 | 95.9 -1.3 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Oberton 12B401 | 46.63 -0.37 | 0.245 = | 69.6 +11.8 | 6.75 +2.05 | 97 -0.2 | close | + | |
| BMS 12CN680 | 46 -1 | 0.26 +0.02 | 58 +0.2 | 5.5 +0.8 | 95 -2.2 | close | 80 W vs 400 W: lower power handling | + |
| B&C 12CLA76 | 52 +5 | 0.25 +0.01 | 56 -1.8 | 5.3 +0.6 | 98.5 +1.3 | close | + | |
| Beyma 12MC700Nd | 51 +4 | 0.24 -0.01 | 58 +0.2 | 7 +2.3 | 99 +1.8 | close | + | |
| 18 Sound 12W1300 | 50 +3 | 0.262 +0.02 | 56.4 -1.4 | 4.3 -0.4 | 98 +0.8 | close | Xmax 4.3 mm < 4.7 mm: lower excursion-limited SPL | + |
| RCF LF12P903 | 47 = | 0.23 -0.01 | 65 +7.2 | 7 +2.3 | 97.8 +0.6 | close | + | |
| BMS 12S302 | 45 -2 | 0.253 +0.01 | 65 +7.2 | 4.5 -0.2 | 96 -1.2 | close | Xmax 4.5 mm < 4.7 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 4071-1 →
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.