Conrad CPA12-200
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 54.6 Hz |
| Qts | 0.19 |
| Qes | 0.197 |
| Qms | 5.456 |
| Vas | 60.5 L |
| Sd | 511 cm² |
| Xmax | 2.6 mm |
| Re | 6.3 Ω |
| Bl | 23.8 T·m |
| Mms | 51.3 g |
| Pe | 200 W |
| Sensitivity | 100 dB |
Alignment hint
| EBP | 277 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 4.7 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 12NMB1000 | 54 -0.6 | 0.19 = | 58 -2.5 | 3.5 +0.9 | 102 +2 | close | + | |
| RCF MB 12N351 | 55 +0.4 | 0.201 +0.01 | 61 +0.5 | 4.7 +2.1 | 100.4 +0.4 | close | + | |
| 18 Sound 12MB1000 | 54 -0.6 | 0.18 -0.01 | 60 -0.5 | 2.5 -0.1 | 102 +2 | close | Xmax 2.5 mm < 2.6 mm: lower excursion-limited SPL | + |
| B&C 12MH32 | 53 -1.6 | 0.19 = | 63 +2.5 | 5 +2.4 | 101 +1 | close | + | |
| PD PDN 12MH25 | 58.2 +3.6 | 0.211 +0.02 | 58.7 -1.8 | 2.6 = | 100.6 +0.6 | close | + | |
| Precision Devices PDN 12MH25 | 58.2 +3.6 | 0.211 +0.02 | 58.7 -1.8 | 2.6 = | 100.6 +0.6 | close | + | |
| PD PD 121 | 59 +4.4 | 0.201 +0.01 | 54 -6.5 | 2.7 +0.1 | 100.7 +0.7 | close | + | |
| Precision Devices PD 121 | 59 +4.4 | 0.201 +0.01 | 54 -6.5 | 2.7 +0.1 | 100.7 +0.7 | close | + | |
| B&C 12 MH 32 | 52 -2.6 | 0.194 = | 71 +10.5 | 4.1 +1.5 | 100.7 +0.7 | close | + | |
| Beyma 12"MI100 | 58 +3.4 | 0.22 +0.03 | 64 +3.5 | 3 +0.4 | 100 = | close | + |
Compare the closest 3 against the CPA12-200 →
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.