Audiotechnology FLEXUNIT 12B772510
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 25 Hz |
| Qts | 0.299 |
| Qes | 0.34 |
| Qms | 2.5 |
| Vas | 250 L |
| Sd | 515 cm² |
| Xmax | 8.6 mm |
| Re | 5.4 Ω |
| Bl | 12.3 T·m |
| Mms | 60.3 g |
| Pe | 250 W |
| Sensitivity | 94.3 dB |
Alignment hint
| EBP | 74 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 54.4 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| Jensen RS12045SW | 25 = | 0.3 = | 220 -30 | 11 +2.4 | 95.6 +1.3 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Fostex SLE 30 W | 22 -3 | 0.302 = | 293 +43 | 9.5 +0.9 | 92.8 -1.5 | close | 160 W vs 250 W: lower power handling | + |
| Westra SW-300-2808 | 30 +5 | 0.322 +0.02 | 209 -41 | 9.3 +0.7 | 94.7 +0.4 | usable | + | |
| Axon 12K01 | 25 = | 0.289 -0.01 | 191.8 -58.2 | 6.7 -1.9 | 95.4 +1.1 | usable | 4 Ω vs 8 Ω: amp load changes · 125 W vs 250 W: lower power handling · Xmax 6.7 mm < 8.6 mm: lower excursion-limited SPL | + |
| Eminence W1238R | 21.5 -3.5 | 0.252 -0.05 | 236.6 -13.4 | 8.2 -0.4 | 93.6 -0.7 | usable | 150 W vs 250 W: lower power handling · Xmax 8.2 mm < 8.6 mm: lower excursion-limited SPL | + |
| Focal 12V 726DB | 25.9 +0.9 | 0.354 +0.05 | 210.5 -39.5 | 8.5 -0.1 | 96 +1.7 | usable | 4 Ω vs 8 Ω: amp load changes · 150 W vs 250 W: lower power handling · Xmax 8.5 mm < 8.6 mm: lower excursion-limited SPL | + |
| Tonsil GDN 30/80/2 | 25 = | 0.26 -0.04 | 270 +20 | 6 -2.6 | 93.5 -0.8 | usable | 80 W vs 250 W: lower power handling · Xmax 6 mm < 8.6 mm: lower excursion-limited SPL | + |
| Visaton WS33NG | 30 +5 | 0.308 +0.01 | 190 -60 | 8 -0.6 | 94.5 +0.2 | usable | Xmax 8 mm < 8.6 mm: lower excursion-limited SPL | + |
| Audiotechnology FLEXUNITS 12 B 77 25 10 | 25 = | 0.3 = | 250 = | 4.3 -4.3 | 92.4 -1.9 | usable | 125 W vs 250 W: lower power handling · Xmax 4.3 mm < 8.6 mm: lower excursion-limited SPL | + |
| Visaton TIW300 | 25 = | 0.282 -0.02 | 160 -90 | 9.7 +1.1 | 92.9 -1.4 | usable | + |
Compare the closest 3 against the FLEXUNIT 12B772510 →
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.