Precision Devices PD1550
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 31 Hz |
| Qts | 0.21 |
| Qes | 0.22 |
| Qms | 5.55 |
| Vas | 242 L |
| Sd | 890 cm² |
| Xmax | 12 mm |
| Re | 6.4 Ω |
| Bl | 26.34 T·m |
| Mms | 123.4 g |
| Pe | 600 W |
| Sensitivity | 99 dB |
Alignment hint
| EBP | 141 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 23.4 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 |
|---|---|---|---|---|---|---|---|---|
| PD PD 1550 | 31 = | 0.212 = | 242 = | 7.4 -4.6 | 98.1 -0.9 | close | Xmax 7.4 mm < 12 mm: lower excursion-limited SPL | + |
| Precision Devices PD 1550 | 31 = | 0.212 = | 242 = | 7.4 -4.6 | 98.1 -0.9 | close | Xmax 7.4 mm < 12 mm: lower excursion-limited SPL | + |
| 18 Sound 15W930 | 33 +2 | 0.22 +0.01 | 240 -2 | 7.5 -4.5 | 98 -1 | usable | Xmax 7.5 mm < 12 mm: lower excursion-limited SPL | + |
| Beyma SM115/K vp2 | 29.8 -1.2 | 0.228 +0.02 | 291 +49 | 8 -4 | 99 = | usable | Xmax 8 mm < 12 mm: lower excursion-limited SPL | + |
| Beyma 15P80/ND | 35 +4 | 0.214 = | 217 -25 | 7.9 -4.1 | 100.1 +1.1 | usable | Xmax 7.9 mm < 12 mm: lower excursion-limited SPL | + |
| STX W.38.800.4.MC | 27 -4 | 0.219 +0.01 | 272 +30 | 8 -4 | 99.9 +0.9 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 8 mm < 12 mm: lower excursion-limited SPL | + |
| Ciare NDH 15-4S | 28 -3 | 0.254 +0.04 | 220 -22 | 11.5 -0.5 | 95.9 -3.1 | usable | Xmax 11.5 mm < 12 mm: lower excursion-limited SPL | + |
| RCF L 15/554K | 35 +4 | 0.243 +0.03 | 227 -15 | 8 -4 | 98.7 -0.3 | usable | Xmax 8 mm < 12 mm: lower excursion-limited SPL | + |
| Ciare NDH15-4S | 28 -3 | 0.25 +0.04 | 220 -22 | 11.5 -0.5 | 94.5 -4.5 | usable | Xmax 11.5 mm < 12 mm: lower excursion-limited SPL | + |
| Beyma 15GT200 v2 | 31 = | 0.218 +0.01 | 270 +28 | 5.4 -6.6 | 98.8 -0.2 | usable | 250 W vs 600 W: lower power handling · Xmax 5.4 mm < 12 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the PD1550 →
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.