MCM Electronics 55-1220
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 26 Hz |
| Qts | 0.297 |
| Qes | 0.34 |
| Qms | 2.33 |
| Vas | 175.9 L |
| Sd | 503 cm² |
| Xmax | 2.3 mm |
| Re | 6.8 Ω |
| Bl | 15.7 T·m |
| Mms | 75.6 g |
| Pe | 80 W |
| Sensitivity | 92.3 dB |
Alignment hint
| EBP | 76 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 37.7 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 |
|---|---|---|---|---|---|---|---|---|
| Eton 12-680/A8/62 HEX SYMPHONIE II | 26 = | 0.296 = | 173 -2.9 | 6 +3.7 | 92.8 +0.5 | close | + | |
| Altec 3124 | 26 = | 0.288 -0.01 | 186.9 +11 | 6.4 +4.1 | 92.9 +0.6 | close | + | |
| Great Plains Audio 3124 GPA | 26 = | 0.288 -0.01 | 186.9 +11 | 6.4 +4.1 | 93.1 +0.8 | close | + | |
| Beyma 12B100R v2017 | 29 +3 | 0.296 = | 154 -21.9 | 3 +0.7 | 93.6 +1.3 | close | + | |
| STX W.32.500.8.MC | 25 -1 | 0.299 = | 155 -20.9 | 7.5 +5.2 | 92.1 -0.2 | close | + | |
| Audax HD33S66 vp - AP | 26 = | 0.286 -0.01 | 228 +52.1 | 3.5 +1.2 | 92.9 +0.6 | close | + | |
| Beyma 12B100R v1 | 26 = | 0.259 -0.04 | 195 +19.1 | 3 +0.7 | 94.3 +2 | close | + | |
| Dayton Audio DS315-8 | 24.2 -1.8 | 0.307 +0.01 | 159.1 -16.8 | 5.5 +3.2 | 91 -1.3 | close | + | |
| Dayton Audio ST305-8 Séries II | 26.2 +0.2 | 0.334 +0.04 | 164 -11.9 | 8 +5.7 | 92.3 = | close | + | |
| MCM Electronics 55-1465 DVC 8 Ohms en série 16 Oh | 25 -1 | 0.29 -0.01 | 203.8 +27.9 | 5 +2.7 | 90.3 -2 | close | 16 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the 55-1220 →
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.