Rockford Fosgate P2D4-15
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 20.9 Hz |
| Qts | 0.655 |
| Qes | 0.74 |
| Qms | 5.7 |
| Vas | 219.6 L |
| Sd | 894 cm² |
| Xmax | 11.3 mm |
| Re | 6.4 Ω |
| Bl | 18.3 T·m |
| Mms | 295.9 g |
| Pe | 400 W |
| Sensitivity | 87.3 dB |
Alignment hint
| EBP | 28 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 1327.4 L |
EBP < 50: favours a sealed (closed) 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 |
|---|---|---|---|---|---|---|---|---|
| Hertz Audio DS 38.3 | 23 +2.1 | 0.65 -0.01 | 244 +24.4 | 9 -2.3 | 87.9 +0.6 | close | 4 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling · Xmax 9 mm < 11.3 mm: lower excursion-limited SPL | + |
| Dayton Audio IB385-8 | 21.5 +0.6 | 0.588 -0.07 | 248.9 +29.3 | 12.4 +1.1 | 89.8 +2.5 | close | + | |
| Rockford Fosgate P3D4-15 | 22.4 +1.5 | 0.566 -0.09 | 155.8 -63.8 | 11 -0.3 | 87.3 = | usable | Xmax 11 mm < 11.3 mm: lower excursion-limited SPL | + |
| Rockford Fosgate P1S4-15 | 23 +2.1 | 0.55 -0.1 | 191.5 -28.1 | 9 -2.3 | 87.3 = | usable | 4 Ω vs 8 Ω: amp load changes · 250 W vs 400 W: lower power handling · Xmax 9 mm < 11.3 mm: lower excursion-limited SPL | + |
| Rockford Fosgate P1S2-15 | 23 +2.1 | 0.55 -0.1 | 191.5 -28.1 | 9 -2.3 | 87.4 +0.1 | usable | 2 Ω vs 8 Ω: amp load changes · 250 W vs 400 W: lower power handling · Xmax 9 mm < 11.3 mm: lower excursion-limited SPL | + |
| Oxygen AIR2 380 | 22.7 +1.8 | 0.543 -0.11 | 202.2 -17.4 | 11.5 +0.2 | 91.6 +4.3 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Rockford Fosgate P115S4 | 24 +3.1 | 0.62 -0.04 | 172 -47.6 | 8 -3.3 | 87.3 = | usable | 4 Ω vs 8 Ω: amp load changes · 200 W vs 400 W: lower power handling · Xmax 8 mm < 11.3 mm: lower excursion-limited SPL | + |
| Soundstream R1-15 | 23.7 +2.8 | 0.62 -0.04 | 136.6 -83 | 17.2 +5.9 | 87.2 -0.1 | usable | + | |
| MTX Audio RT15-04 | 20 -0.9 | 0.479 -0.18 | 223 +3.4 | 10.3 -1 | 90.8 +3.5 | usable | 4 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling · Xmax 10.3 mm < 11.3 mm: lower excursion-limited SPL | + |
| GRS 15SSW-4HE | 20.7 -0.2 | 0.487 -0.17 | 196.6 -23 | 9.5 -1.8 | 89.8 +2.5 | usable | 300 W vs 400 W: lower power handling · Xmax 9.5 mm < 11.3 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the P2D4-15 →
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.