Usher Audio 15 HM
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 28.7 Hz |
| Qts | 0.299 |
| Qes | 0.307 |
| Qms | 11.095 |
| Vas | 314.9 L |
| Sd | 880 cm² |
| Xmax | 5.5 mm |
| Re | 5.3 Ω |
| Bl | 18.2 T·m |
| Mms | 105.8 g |
| Pe | 150 W |
| Sensitivity | 97.6 dB |
Alignment hint
| EBP | 93 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 68.6 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 |
|---|---|---|---|---|---|---|---|---|
| TAD TL-1601 A | 28 -0.7 | 0.306 +0.01 | 304 -10.9 | 5.5 = | 96 -1.6 | close | + | |
| TAD TL-1601 C | 28 -0.7 | 0.309 +0.01 | 304 -10.9 | 5.6 +0.1 | 96 -1.6 | close | + | |
| RCF L 15P200 v1983 | 29 +0.3 | 0.291 -0.01 | 280 -34.9 | 7.4 +1.9 | 96.6 -1 | close | + | |
| RCF L 15P200/A | 29 +0.3 | 0.291 -0.01 | 280 -34.9 | 8.9 +3.4 | 96.6 -1 | close | + | |
| Focal AUDIOM 15B | 31.6 +2.9 | 0.282 -0.02 | 330 +15.1 | 6 +0.5 | 98.8 +1.2 | close | + | |
| Davis 40RCA15 | 27 -1.7 | 0.282 -0.02 | 350 +35.1 | 5 -0.5 | 97.7 +0.1 | close | Xmax 5 mm < 5.5 mm: lower excursion-limited SPL | + |
| Davis 40RCA15DF | 27 -1.7 | 0.282 -0.02 | 350 +35.1 | 5 -0.5 | 97.7 +0.1 | close | Xmax 5 mm < 5.5 mm: lower excursion-limited SPL | + |
| Davis 40RCADF | 27 -1.7 | 0.282 -0.02 | 350 +35.1 | 5 -0.5 | 97.7 +0.1 | close | Xmax 5 mm < 5.5 mm: lower excursion-limited SPL | + |
| Faital PRO 15PR400 v2014 | 32 +3.3 | 0.295 = | 267.2 -47.7 | 5.8 +0.3 | 98.4 +0.8 | close | + | |
| Beyma 15LW30 | 32 +3.3 | 0.28 -0.02 | 325 +10.1 | 7 +1.5 | 98.8 +1.2 | close | + |
Compare the closest 3 against the 15 HM →
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.