PHL Audio 4040
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 45 Hz |
| Qts | 0.208 |
| Qes | 0.22 |
| Qms | 3.8 |
| Vas | 85 L |
| Sd | 536.6 cm² |
| Xmax | 4.9 mm |
| Re | 5.5 Ω |
| Bl | 20.5 T·m |
| Mms | 59.4 g |
| Pe | 400 W |
| Sensitivity | 99.1 dB |
Alignment hint
| EBP | 205 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 8.1 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 |
|---|---|---|---|---|---|---|---|---|
| Fane COLOSSUS 12BM | 43 -2 | 0.211 = | 89 +4 | 5.3 +0.4 | 98.8 -0.3 | close | + | |
| 18 Sound 12MB710 | 46 +1 | 0.2 -0.01 | 81 -4 | 5 +0.1 | 100 +0.9 | close | + | |
| 18 Sound 12MB720 | 46 +1 | 0.2 -0.01 | 81 -4 | 5 +0.1 | 100 +0.9 | close | + | |
| 18 Sound 12MB810 | 46 +1 | 0.2 -0.01 | 81 -4 | 5 +0.1 | 100 +0.9 | close | + | |
| PHL Audio 4130 | 42 -3 | 0.208 = | 92 +7 | 5.2 +0.3 | 98.5 -0.6 | close | + | |
| PD PD 122 | 42.9 -2.1 | 0.196 -0.01 | 90 +5 | 4.7 -0.2 | 98.8 -0.3 | close | Xmax 4.7 mm < 4.9 mm: lower excursion-limited SPL | + |
| Precision Devices PD 122 | 42.9 -2.1 | 0.196 -0.01 | 90 +5 | 4.7 -0.2 | 98.8 -0.3 | close | Xmax 4.7 mm < 4.9 mm: lower excursion-limited SPL | + |
| Precision Devices PD122 | 42.9 -2.1 | 0.194 -0.01 | 90 +5 | 5.5 +0.6 | 98 -1.1 | close | 16 Ω vs 8 Ω: amp load changes | + |
| RCF L 12N301 | 48 +3 | 0.213 +0.01 | 70 -15 | 5 +0.1 | 99.1 = | close | + | |
| 18 Sound 12ND730 | 45 = | 0.23 +0.02 | 90 +5 | 6.5 +1.6 | 98 -1.1 | close | + |
Compare the closest 3 against the 4040 →
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.