STX W.38.800.4.MC
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 4 Ω |
| Fs | 27 Hz |
| Qts | 0.219 |
| Qes | 0.23 |
| Qms | 4.37 |
| Vas | 272 L |
| Sd | 855 cm² |
| Xmax | 8 mm |
| Re | 3 Ω |
| Bl | 17 T·m |
| Mms | 130.9 g |
| Pe | 500 W |
| Sensitivity | 99.9 dB |
Alignment hint
| EBP | 117 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 28.9 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma SM115/K vp1 | 27.6 +0.6 | 0.222 = | 296.7 +24.7 | 8 = | 98.3 -1.6 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Beyma SM115/K vp2 | 29.8 +2.8 | 0.228 +0.01 | 291 +19 | 8 = | 99 -0.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Infinity BETA15 | 24.4 -2.6 | 0.23 +0.01 | 289.9 +17.9 | 7.9 -0.1 | 98.1 -1.8 | close | 350 W vs 500 W: lower power handling · Xmax 7.9 mm < 8 mm: lower excursion-limited SPL | + |
| Beyma SM115/K | 29 +2 | 0.249 +0.03 | 273 +1 | 8 = | 97.2 -2.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Precision Devices PD1550 | 31 +4 | 0.21 -0.01 | 242 -30 | 12 +4 | 99 -0.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| PD PD 1550 | 31 +4 | 0.212 -0.01 | 242 -30 | 7.4 -0.6 | 98.1 -1.8 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.4 mm < 8 mm: lower excursion-limited SPL | + |
| Precision Devices PD 1550 | 31 +4 | 0.212 -0.01 | 242 -30 | 7.4 -0.6 | 98.1 -1.8 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.4 mm < 8 mm: lower excursion-limited SPL | + |
| 18 Sound 15W930 | 33 +6 | 0.22 = | 240 -32 | 7.5 -0.5 | 98 -1.9 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 7.5 mm < 8 mm: lower excursion-limited SPL | + |
| Beyma 15GT200 v2 | 31 +4 | 0.218 = | 270 -2 | 5.4 -2.6 | 98.8 -1.1 | usable | 8 Ω vs 4 Ω: amp load changes · 250 W vs 500 W: lower power handling · Xmax 5.4 mm < 8 mm: lower excursion-limited SPL | + |
| STX W.38.800.8.MC | 28 +1 | 0.252 +0.03 | 247 -25 | 8 = | 96.5 -3.4 | usable | 8 Ω vs 4 Ω: amp load changes | + |
Compare the closest 3 against the W.38.800.4.MC →
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.