PHL Audio 4070
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 47 Hz |
| Qts | 0.207 |
| Qes | 0.22 |
| Qms | 3.5 |
| Vas | 68 L |
| Sd | 490 cm² |
| Xmax | 4.6 mm |
| Re | 5.5 Ω |
| Bl | 20.5 T·m |
| Mms | 56.8 g |
| Pe | 400 W |
| Sensitivity | 98.7 dB |
Alignment hint
| EBP | 214 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 6.4 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 |
|---|---|---|---|---|---|---|---|---|
| RCF L 12N301 | 48 +1 | 0.213 +0.01 | 70 +2 | 5 +0.4 | 99.1 +0.4 | close | + | |
| BMS 12S320 | 45.4 -1.6 | 0.2 -0.01 | 69.5 +1.5 | 4.5 -0.1 | 98 -0.7 | close | Xmax 4.5 mm < 4.6 mm: lower excursion-limited SPL | + |
| Beyma 12P80FE V2 | 50 +3 | 0.201 -0.01 | 66.8 -1.2 | 5.2 +0.6 | 99.9 +1.2 | close | + | |
| 18 Sound 12ND930 | 50 +3 | 0.21 = | 70 +2 | 6.5 +1.9 | 98 -0.7 | close | + | |
| P.Audio BM-12CX38 | 48 +1 | 0.221 +0.01 | 72.9 +4.9 | 4.5 -0.1 | 99.3 +0.6 | close | Xmax 4.5 mm < 4.6 mm: lower excursion-limited SPL | + |
| B&C 12CL76 | 48 +1 | 0.21 = | 59 -9 | 6 +1.4 | 98.5 -0.2 | close | + | |
| Beyma 12"P80/Fe V2 | 48 +1 | 0.21 = | 61 -7 | 7.5 +2.9 | 99 +0.3 | close | + | |
| Oberton 12NB450 | 46.46 -0.54 | 0.204 = | 72.57 +4.57 | 7.75 +3.15 | 100 +1.3 | close | + | |
| PHL Audio 4040 | 45 -2 | 0.208 = | 85 +17 | 4.9 +0.3 | 99.1 +0.4 | close | + | |
| 18 Sound 12ND940 | 49 +2 | 0.2 -0.01 | 64.8 -3.2 | 7.6 +3 | 100 +1.3 | close | + |
Compare the closest 3 against the 4070 →
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.