Precision Devices PD 1852
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 40 Hz |
| Qts | 0.33 |
| Qes | 0.34 |
| Qms | 11.18 |
| Vas | 129.1 L |
| Sd | 1164 cm² |
| Xmax | 6.2 mm |
| Re | 5.87 Ω |
| Bl | 31.8 T·m |
| Mms | 232.9 g |
| Pe | 1000 W |
| Sensitivity | 97.2 dB |
Alignment hint
| EBP | 118 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 35.9 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 |
|---|---|---|---|---|---|---|---|---|
| PD PD 1852 | 40 = | 0.33 = | 129.1 = | 6.2 = | 97.2 = | close | + | |
| MAG Audio M 1805 | 37.5 -2.5 | 0.357 +0.03 | 138.5 +9.4 | 7.1 +0.9 | 96.7 -0.5 | close | + | |
| PRV Audio 18SW3000 | 43.7 +3.7 | 0.342 +0.01 | 111.3 -17.8 | 6.7 +0.5 | 98.1 +0.9 | close | + | |
| Beyma 18P1200Nd vp459 | 43.8 +3.8 | 0.376 +0.05 | 124.9 -4.2 | 6.3 +0.1 | 98.3 +1.1 | close | + | |
| 18 Sound 18NLW4500 | 37 -3 | 0.31 -0.02 | 127 -2.1 | 14.75 +8.55 | 96.5 -0.7 | close | 4 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 18LW2500 | 34 -6 | 0.335 +0.01 | 135 +5.9 | 9.1 +2.9 | 96 -1.2 | close | + | |
| Beyma 18P1200Nd vp1 | 43.8 +3.8 | 0.376 +0.05 | 116.9 -12.2 | 6.1 -0.1 | 98 +0.8 | close | Xmax 6.1 mm < 6.2 mm: lower excursion-limited SPL | + |
| B&C 18 PZB 46 | 37 -3 | 0.374 +0.04 | 155 +25.9 | 6.5 +0.3 | 96.8 -0.4 | close | 700 W vs 1000 W: lower power handling | + |
| 18 Sound 18NLW4500 | 35 -5 | 0.33 = | 151 +21.9 | 15.3 +9.1 | 97 -0.2 | close | + | |
| Oberton 18XB1201 | 38.05 -1.95 | 0.317 -0.01 | 159.37 +30.27 | 10.5 +4.3 | 98.5 +1.3 | close | + |
Compare the closest 3 against the PD 1852 →
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.