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References
Front view — overlaid at true scale
AATC SCM50SLBFocal Diablo Utopia Colour Evo
| A | B | |
|---|---|---|
| Manufacturer | ATC | Focal |
| Model | ATC SCM50SL | Focal Diablo Utopia Colour Evo Colour Evo |
| Height | 717 mm | 431 mm |
| Width | 304 mm | 229 mm |
| Depth | 425 mm | 427 mm |
| Weight | 41.1 kg | 39 kg |
| Enclosure | bass-reflex-front | bass-reflex-front |
| Drivers | 1× 25 mm tweeter (soft dome), 1× 75 mm midrange (soft dome), 1× 234 mm woofer (cone) | 1× 27 mm tweeter (pure beryllium inverted dome), 1× 165 mm mid-bass (W sandwich cone) |
| Frequency — low | 40 Hz | 44 Hz |
| Frequency — high | 25000 Hz | 40000 Hz |
| Sensitivity | 85 dB | 89 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 100–1500 W | 25–200 W |
| MAP (USD) | $25,999 / pair | $20,998 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | atc.audio ↗ | focal.com ↗ |
| Product page | Open product page ↗ | Open product page ↗ |
Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.

