Rockford Fosgate T1D212
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 28 Hz |
| Qts | 0.522 |
| Qes | 0.59 |
| Qms | 4.5 |
| Vas | 55.8 L |
| Sd | 548 cm² |
| Xmax | 10.9 mm |
| Re | 3.25 Ω |
| Bl | 15.4 T·m |
| Mms | 243.7 g |
| Pe | 800 W |
| Sensitivity | 89.1 dB |
Alignment hint
| EBP | 47 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 66.8 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 |
|---|---|---|---|---|---|---|---|---|
| JL Audio 13TW5V2-2 | 27.6 -0.4 | 0.526 = | 60.3 +4.5 | 9 -1.9 | 89.2 +0.1 | close | 600 W vs 800 W: lower power handling · Xmax 9 mm < 10.9 mm: lower excursion-limited SPL | + |
| Rockford Fosgate P3D2-12 | 26.5 -1.5 | 0.491 -0.03 | 57.7 +1.9 | 9.5 -1.4 | 89 -0.1 | close | 600 W vs 800 W: lower power handling · Xmax 9.5 mm < 10.9 mm: lower excursion-limited SPL | + |
| Rockford Fosgate P3D4-12 | 27.7 -0.3 | 0.517 -0.01 | 57.7 +1.9 | 9.4 -1.5 | 86.3 -2.8 | close | 8 Ω vs 4 Ω: amp load changes · 600 W vs 800 W: lower power handling · Xmax 9.4 mm < 10.9 mm: lower excursion-limited SPL | + |
| Rockford Fosgate T0D412 | 26 -2 | 0.529 +0.01 | 55.1 -0.7 | 10.7 -0.2 | 85.3 -3.8 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 10.7 mm < 10.9 mm: lower excursion-limited SPL | + |
| Rockford Fosgate T0D212 | 25.3 -2.7 | 0.473 -0.05 | 55 -0.8 | 10.5 -0.4 | 88 -1.1 | close | Xmax 10.5 mm < 10.9 mm: lower excursion-limited SPL | + |
| Audiomobile ELITE 2212 | 28 = | 0.48 -0.04 | 59.46 +3.66 | 12.7 +1.8 | 85.8 -3.3 | close | 600 W vs 800 W: lower power handling | + |
| Dayton Audio UMII12-22 | 31 +3 | 0.564 +0.04 | 53 -2.8 | 10 -0.9 | 88.2 -0.9 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 10 mm < 10.9 mm: lower excursion-limited SPL | + |
| Sound Storm Labs CR12D | 30.7 +2.7 | 0.522 = | 66.9 +11.1 | 10.3 -0.6 | 87.5 -1.6 | close | 8 Ω vs 4 Ω: amp load changes · 600 W vs 800 W: lower power handling · Xmax 10.3 mm < 10.9 mm: lower excursion-limited SPL | + |
| Audio System HX12 SQ | 28.2 +0.2 | 0.5 -0.02 | 68 +12.2 | 11.8 +0.9 | 86.1 -3 | close | 450 W vs 800 W: lower power handling | + |
| Rockford Fosgate T1D412 | 29.2 +1.2 | 0.613 +0.09 | 55.8 = | 10.9 = | 85.8 -3.3 | close | 8 Ω vs 4 Ω: amp load changes | + |
Compare the closest 3 against the T1D212 →
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.