Boston Acoustics G21244
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 2 Ω |
| Fs | 28 Hz |
| Qts | 0.579 |
| Qes | 0.61 |
| Qms | 11.23 |
| Vas | 65 L |
| Sd | 520 cm² |
| Xmax | 8.2 mm |
| Re | 1.7 Ω |
| Bl | 9.6 T·m |
| Mms | 188.4 g |
| Pe | 300 W |
| Sensitivity | 92.4 dB |
Alignment hint
| EBP | 46 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 132.3 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 |
|---|---|---|---|---|---|---|---|---|
| MTX Audio T5512-04 | 29.3 +1.3 | 0.583 = | 66.9 +1.9 | 7.3 -0.9 | 89.8 -2.6 | close | 4 Ω vs 2 Ω: amp load changes · Xmax 7.3 mm < 8.2 mm: lower excursion-limited SPL | + |
| MTX Audio RT12-04 | 28 = | 0.535 -0.04 | 68 +3 | 7.5 -0.7 | 90.1 -2.3 | close | 4 Ω vs 2 Ω: amp load changes · Xmax 7.5 mm < 8.2 mm: lower excursion-limited SPL | + |
| Kenwood KFC-WPS1200F | 24.8 -3.2 | 0.544 -0.03 | 62.685 -2.31 | 8.5 +0.3 | 91 -1.4 | close | 4 Ω vs 2 Ω: amp load changes | + |
| Focal 33V2 | 28.7 +0.7 | 0.537 -0.04 | 76.2 +11.2 | 7.5 -0.7 | 92.5 +0.1 | close | 4 Ω vs 2 Ω: amp load changes · Xmax 7.5 mm < 8.2 mm: lower excursion-limited SPL | + |
| JBL GTO 1214D | 28.3 +0.3 | 0.488 -0.09 | 66 +1 | 7.3 -0.9 | 92.9 +0.5 | close | Xmax 7.3 mm < 8.2 mm: lower excursion-limited SPL | + |
| Alpine SWS-1241 | 30 +2 | 0.563 -0.02 | 65 = | 6.7 -1.5 | 90.1 -2.3 | close | 4 Ω vs 2 Ω: amp load changes · 200 W vs 300 W: lower power handling · Xmax 6.7 mm < 8.2 mm: lower excursion-limited SPL | + |
| Wavecor SW310WA02 | 27.5 -0.5 | 0.52 -0.06 | 64.5 -0.5 | 7.4 -0.8 | 89.9 -2.5 | close | 4 Ω vs 2 Ω: amp load changes · Xmax 7.4 mm < 8.2 mm: lower excursion-limited SPL | + |
| MTX Audio RT12-44 | 28 = | 0.698 +0.12 | 68 +3 | 7.6 -0.6 | 91.8 -0.6 | close | Xmax 7.6 mm < 8.2 mm: lower excursion-limited SPL | + |
| JL Audio 13TW5V2-2 | 27.6 -0.4 | 0.526 -0.05 | 60.3 -4.7 | 9 +0.8 | 89.2 -3.2 | close | 4 Ω vs 2 Ω: amp load changes | + |
| Powerbass L-124D 12 | 29 +1 | 0.489 -0.09 | 59 -6 | 9 +0.8 | 93.2 +0.8 | close | + |
Compare the closest 3 against the G21244 →
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.