Precision Devices PD122
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 16 Ω |
| Fs | 42.9 Hz |
| Qts | 0.194 |
| Qes | 0.197 |
| Qms | 10.81 |
| Vas | 90 L |
| Sd | 550 cm² |
| Xmax | 5.5 mm |
| Re | 5.9 Ω |
| Bl | 22.9 T·m |
| Mms | 65 g |
| Pe | 400 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 218 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 7.3 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 122 | 42.9 = | 0.196 = | 90 = | 4.7 -0.8 | 98.8 +0.8 | close | 8 Ω vs 16 Ω: amp load changes · Xmax 4.7 mm < 5.5 mm: lower excursion-limited SPL | + |
| Precision Devices PD 122 | 42.9 = | 0.196 = | 90 = | 4.7 -0.8 | 98.8 +0.8 | close | 8 Ω vs 16 Ω: amp load changes · Xmax 4.7 mm < 5.5 mm: lower excursion-limited SPL | + |
| Fane COLOSSUS 12BM | 43 +0.1 | 0.211 +0.02 | 89 -1 | 5.3 -0.2 | 98.8 +0.8 | close | 8 Ω vs 16 Ω: amp load changes · Xmax 5.3 mm < 5.5 mm: lower excursion-limited SPL | + |
| PHL Audio 4130 | 42 -0.9 | 0.208 +0.01 | 92 +2 | 5.2 -0.3 | 98.5 +0.5 | close | 8 Ω vs 16 Ω: amp load changes · Xmax 5.2 mm < 5.5 mm: lower excursion-limited SPL | + |
| RCF LF 12G301 | 43 +0.1 | 0.219 +0.02 | 97 +7 | 5.9 +0.4 | 98.6 +0.6 | close | 8 Ω vs 16 Ω: amp load changes | + |
| B&C 12 PZ 32 | 38 -4.9 | 0.193 = | 102 +12 | 5.5 = | 97.6 -0.4 | close | 8 Ω vs 16 Ω: amp load changes | + |
| 18 Sound 12ND730 | 45 +2.1 | 0.23 +0.04 | 90 = | 6.5 +1 | 98 = | close | 8 Ω vs 16 Ω: amp load changes | + |
| PHL Audio B303-8 4230 | 40 -2.9 | 0.22 +0.03 | 87.2 -2.8 | 5.8 +0.3 | 97.3 -0.7 | close | 8 Ω vs 16 Ω: amp load changes | + |
| RCF L 12P301 | 43 +0.1 | 0.219 +0.02 | 97 +7 | 7.8 +2.3 | 98.6 +0.6 | close | 8 Ω vs 16 Ω: amp load changes | + |
| RCF LF12G301 | 43 +0.1 | 0.22 +0.03 | 97 +7 | 7 +1.5 | 97 -1 | close | 8 Ω vs 16 Ω: amp load changes | + |
Compare the closest 3 against the PD122 →
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.