Realistic 40-1025
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 21.5 Hz |
| Qts | 0.452 |
| Qes | 0.58 |
| Qms | 2.04 |
| Vas | 526 L |
| Sd | 530.7 cm² |
| Xmax | 11.4 mm |
| Re | 5.3 Ω |
| Bl | 7.1 T·m |
| Mms | 41.1 g |
| Pe | 200 W |
| Sensitivity | 93.3 dB |
Alignment hint
| EBP | 37 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 363.4 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 |
|---|---|---|---|---|---|---|---|---|
| Davis 31ST12M v2009 | 22 +0.5 | 0.39 -0.06 | 398 -128 | 9 -2.4 | 91.8 -1.5 | usable | 100 W vs 200 W: lower power handling · Xmax 9 mm < 11.4 mm: lower excursion-limited SPL | + |
| SB Acoustics SB34NRX75-6 vp | 22.2 +0.7 | 0.444 -0.01 | 240 -286 | 11 -0.4 | 92 -1.3 | usable | Xmax 11 mm < 11.4 mm: lower excursion-limited SPL | + |
| Audax LFH507 | 20 -1.5 | 0.483 +0.03 | 513.5 -12.5 | 4.5 -6.9 | 92 -1.3 | usable | 100 W vs 200 W: lower power handling · Xmax 4.5 mm < 11.4 mm: lower excursion-limited SPL | + |
| Audax PR300 MO AP | 25 +3.5 | 0.468 +0.02 | 457 -69 | 4.4 -7 | 94 +0.7 | usable | 100 W vs 200 W: lower power handling · Xmax 4.4 mm < 11.4 mm: lower excursion-limited SPL | + |
| Audiotechnology FLEXUNIT 12D775210KAP Custom | 19 -2.5 | 0.388 -0.06 | 340 -186 | 8.6 -2.8 | 91.1 -2.2 | usable | Xmax 8.6 mm < 11.4 mm: lower excursion-limited SPL | + |
| Audiotechnology FLEXUNIT 12B775210KAP Custom | 19 -2.5 | 0.382 -0.07 | 340 -186 | 8.6 -2.8 | 91.2 -2.1 | usable | Xmax 8.6 mm < 11.4 mm: lower excursion-limited SPL | + |
| SB Acoustics SB34NRX75-6 | 19 -2.5 | 0.397 -0.05 | 260 -266 | 11 -0.4 | 91 -2.3 | usable | Xmax 11 mm < 11.4 mm: lower excursion-limited SPL | + |
| Visaton WS300 | 22 +0.5 | 0.321 -0.13 | 340 -186 | 8 -3.4 | 92.5 -0.8 | usable | 150 W vs 200 W: lower power handling · Xmax 8 mm < 11.4 mm: lower excursion-limited SPL | + |
| Wharfedale 3014 | 20.7 -0.8 | 0.342 -0.11 | 319.1 -206.9 | 8 -3.4 | 92.2 -1.1 | usable | 100 W vs 200 W: lower power handling · Xmax 8 mm < 11.4 mm: lower excursion-limited SPL | + |
| Davis 31ST12M | 24 +2.5 | 0.399 -0.05 | 260 -266 | 8.9 -2.5 | 91.6 -1.7 | usable | 100 W vs 200 W: lower power handling · Xmax 8.9 mm < 11.4 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 40-1025 →
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.