Conrad B12123
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 33 Hz |
| Qts | 0.446 |
| Qes | 0.498 |
| Qms | 4.27 |
| Vas | 64.6 L |
| Sd | 511 cm² |
| Xmax | 5.5 mm |
| Re | 3.4 Ω |
| Bl | 13.7 T·m |
| Mms | 131.8 g |
| Pe | 200 W |
| Sensitivity | 92.4 dB |
Alignment hint
| EBP | 66 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 42.7 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| Monacor PREDATOR 12 | 33 = | 0.463 +0.02 | 64 -0.6 | 5.9 +0.4 | 91.9 -0.5 | close | + | |
| Sica 12 SR 3 PL | 36 +3 | 0.42 -0.03 | 60.4 -4.2 | 7 +1.5 | 91.8 -0.6 | close | 8 Ω vs 4 Ω: amp load changes | + |
| SICA 12 SR 3 PL v2018 | 36 +3 | 0.418 -0.03 | 60.4 -4.2 | 7 +1.5 | 91.7 -0.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Pioneer TS-W306C | 32.6 -0.4 | 0.414 -0.03 | 55.6 -9 | 8.1 +2.6 | 92.8 +0.4 | close | + | |
| SICA 12 SR 3 CP v2018 | 36.8 +3.8 | 0.387 -0.06 | 64 -0.6 | 6 +0.5 | 92.5 +0.1 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Monacor CRB-38HQ | 31 -2 | 0.424 -0.02 | 55 -9.6 | 6 +0.5 | 91.2 -1.2 | close | + | |
| Focal P30 | 31.3 -1.7 | 0.508 +0.06 | 63.9 -0.7 | 7.4 +1.9 | 91 -1.4 | close | + | |
| Magnat AD 300 Séries II | 30 -3 | 0.411 -0.04 | 72 +7.4 | 7.3 +1.8 | 92.6 +0.2 | close | + | |
| Goldwood GW-12PC/4 | 32.9 -0.1 | 0.395 -0.05 | 73.2 +8.6 | 5 -0.5 | 93.1 +0.7 | close | Xmax 5 mm < 5.5 mm: lower excursion-limited SPL | + |
| Kenwood KFC-W3009 | 32 -1 | 0.42 -0.03 | 63.93 -0.67 | 8 +2.5 | 88.7 -3.7 | close | + |
Compare the closest 3 against the B12123 →
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.