Precision Devices PD2150
Thiele-Small parameters
| Nominal size | 21" |
|---|---|
| Impedance | 8 Ω |
| Fs | 22 Hz |
| Qts | 0.19 |
| Qes | 0.2 |
| Qms | 5.51 |
| Vas | 628 L |
| Sd | 1630 cm² |
| Xmax | 19 mm |
| Re | 5.48 Ω |
| Bl | 34.28 T·m |
| Mms | 305 g |
| Pe | 1000 W |
| Sensitivity | 99 dB |
Alignment hint
| EBP | 110 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 48.9 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 21LW1400 | 28 +6 | 0.24 +0.05 | 385 -243 | 9.5 -9.5 | 99 = | risky | Xmax 9.5 mm < 19 mm: lower excursion-limited SPL | + |
| RCF LF21N451 | 30 +8 | 0.26 +0.07 | 375 -253 | 13 -6 | 98.5 -0.5 | risky | Xmax 13 mm < 19 mm: lower excursion-limited SPL | + |
| Faital PRO 21XL3000 | 30 +8 | 0.25 +0.06 | 284.6 -343.4 | 17.67 -1.33 | 98 -1 | risky | Xmax 17.67 mm < 19 mm: lower excursion-limited SPL | + |
| Pyle PDW21250 | 22.4 +0.4 | 0.33 +0.14 | 703.8 +75.8 | 9 -10 | 95 -4 | risky | Xmax 9 mm < 19 mm: lower excursion-limited SPL | + |
| Faital PRO 21XL3000 | 32 +10 | 0.22 +0.03 | 223.5 -404.5 | 17.67 -1.33 | 98 -1 | risky | 4 Ω vs 8 Ω: amp load changes · Xmax 17.67 mm < 19 mm: lower excursion-limited SPL | + |
| B&C 21DS115 | 32 +10 | 0.21 +0.02 | 219 -409 | 15 -4 | 100 +1 | risky | 4 Ω vs 8 Ω: amp load changes · Xmax 15 mm < 19 mm: lower excursion-limited SPL | + |
| Beyma 21QLEX1600Fe | 30 +8 | 0.28 +0.09 | 309 -319 | 13 -6 | 98 -1 | risky | Xmax 13 mm < 19 mm: lower excursion-limited SPL | + |
| Beyma 21"LEX1600/Nd | 30 +8 | 0.29 +0.1 | 305 -323 | 14 -5 | 98 -1 | risky | Xmax 14 mm < 19 mm: lower excursion-limited SPL | + |
| 18 Sound 21LW2600 | 27 +5 | 0.33 +0.14 | 333 -295 | 14.6 -4.4 | 97 -2 | risky | Xmax 14.6 mm < 19 mm: lower excursion-limited SPL | + |
| 18 Sound 21NLW5300 | 31 +9 | 0.32 +0.13 | 325 -303 | 15.3 -3.7 | 98.5 -0.5 | risky | Xmax 15.3 mm < 19 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the PD2150 →
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.