Dayton Audio IB385-8
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 21.5 Hz |
| Qts | 0.588 |
| Qes | 0.63 |
| Qms | 8.92 |
| Vas | 248.9 L |
| Sd | 819.4 cm² |
| Xmax | 12.4 mm |
| Re | 5.2 Ω |
| Bl | 15.2 T·m |
| Mms | 207.2 g |
| Pe | 350 W |
| Sensitivity | 89.8 dB |
Alignment hint
| EBP | 34 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 557.9 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 |
|---|---|---|---|---|---|---|---|---|
| Rockford Fosgate P2D4-15 | 20.9 -0.6 | 0.655 +0.07 | 219.6 -29.3 | 11.3 -1.1 | 87.3 -2.5 | usable | Xmax 11.3 mm < 12.4 mm: lower excursion-limited SPL | + |
| Oxygen AIR2 380 | 22.7 +1.2 | 0.543 -0.04 | 202.2 -46.7 | 11.5 -0.9 | 91.6 +1.8 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 11.5 mm < 12.4 mm: lower excursion-limited SPL | + |
| Hertz Audio DS 38.3 | 23 +1.5 | 0.65 +0.06 | 244 -4.9 | 9 -3.4 | 87.9 -1.9 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 9 mm < 12.4 mm: lower excursion-limited SPL | + |
| MTX Audio RT15-04 | 20 -1.5 | 0.479 -0.11 | 223 -25.9 | 10.3 -2.1 | 90.8 +1 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 10.3 mm < 12.4 mm: lower excursion-limited SPL | + |
| GRS 15SSW-4HE | 20.7 -0.8 | 0.487 -0.1 | 196.6 -52.3 | 9.5 -2.9 | 89.8 = | usable | Xmax 9.5 mm < 12.4 mm: lower excursion-limited SPL | + |
| Dayton Audio UM15-22 ULTIMAX DVC | 19.5 -2 | 0.474 -0.11 | 224.3 -24.6 | 9.5 -2.9 | 90.2 +0.4 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 9.5 mm < 12.4 mm: lower excursion-limited SPL | + |
| Rockford Fosgate P3D4-15 | 22.4 +0.9 | 0.566 -0.02 | 155.8 -93.1 | 11 -1.4 | 87.3 -2.5 | usable | Xmax 11 mm < 12.4 mm: lower excursion-limited SPL | + |
| Dayton Audio DVC385-88 | 20.9 -0.6 | 0.446 -0.14 | 237 -11.9 | 11.1 -1.3 | 93.8 +4 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 11.1 mm < 12.4 mm: lower excursion-limited SPL | + |
| MTX Audio T3154 | 22.7 +1.2 | 0.561 -0.03 | 315.9 +67 | 9.4 -3 | 93.8 +4 | usable | 4 Ω vs 8 Ω: amp load changes · 200 W vs 350 W: lower power handling · Xmax 9.4 mm < 12.4 mm: lower excursion-limited SPL | + |
| Rockford Fosgate P1S2-15 | 23 +1.5 | 0.55 -0.04 | 191.5 -57.4 | 9 -3.4 | 87.4 -2.4 | usable | 2 Ω vs 8 Ω: amp load changes · 250 W vs 350 W: lower power handling · Xmax 9 mm < 12.4 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the IB385-8 →
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.