Fertin Acoustics 46EX 12.5V v2
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 23 Hz |
| Qts | 0.151 |
| Qes | 0.16 |
| Qms | 2.56 |
| Vas | 500 L |
| Sd | 1101.5 cm² |
| Xmax | 3 mm |
| Re | 5 Ω |
| Bl | 27.1 T·m |
| Mms | 162.9 g |
| Pe | 100 W |
| Sensitivity | 99.8 dB |
Alignment hint
| EBP | 144 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 23.9 L |
EBP > 100: favours a ported (bass-reflex) 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 |
|---|---|---|---|---|---|---|---|---|
| Fertin Acoustics 46EX 10.0V v2 | 23 = | 0.186 +0.04 | 500 = | 3 = | 98.9 -0.9 | close | + | |
| Fertin Acoustics 46EX 10.0V | 22.2 -0.8 | 0.155 = | 667.7 +167.7 | 3 = | 100.6 +0.8 | close | + | |
| Fertin Acoustics 46EX 12.5V | 22.2 -0.8 | 0.117 -0.03 | 667.7 +167.7 | 3 = | 101.8 +2 | usable | + | |
| Benett 18.300 | 22.8 -0.2 | 0.133 -0.02 | 809.8 +309.8 | 5 +2 | 101.3 +1.5 | usable | + | |
| Benett 18.300 T/S | 22.8 -0.2 | 0.133 -0.02 | 809.8 +309.8 | 5 +2 | 101.3 +1.5 | usable | + | |
| Beyma 18GT200 v1 | 24.6 +1.6 | 0.213 +0.06 | 595 +95 | 5.8 +2.8 | 99.3 -0.5 | usable | + | |
| Fertin Acoustics 46EX 07.5V v2 | 23 = | 0.26 +0.11 | 500 = | 3 = | 97.2 -2.6 | usable | + | |
| Fane COLOSSUS 18 BASS | 28 +5 | 0.188 +0.04 | 366 -134 | 3.8 +0.8 | 99.2 -0.6 | usable | + | |
| Fertin Acoustics 46EX 15.0V | 22.2 -0.8 | 0.108 -0.04 | 667.7 +167.7 | 3 = | 102.2 +2.4 | usable | + | |
| JBL E155-8 | 30 +7 | 0.2 +0.05 | 424.8 -75.2 | 5.1 +2.1 | 100.4 +0.6 | usable | + |
Compare the closest 3 against the 46EX 12.5V v2 →
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.