135/ 162This speaker ships with a side photo, so you can compare its true depth in the Profile view of the comparator.

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ATC · Classic · Bookshelf
SCM20ASL
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Product description
The active version of ATC's compact Classic standmount — a 150 mm Super Linear mid/bass and the 25 mm S-Spec soft-dome tweeter in a sealed cabinet, driven by on-board Class A/B bi-amplification (200 W bass, 50 W treble) via balanced XLR.
Units
| Type | Bookshelf |
|---|---|
| HiFi ladder position | #135 of 162 bookshelf |
| Power | Active |
| Height | 450 mm |
| Width | 250 mm |
| Depth | 411 mm |
| Weight | 24.3 kg |
| Enclosure | sealed |
| Drivers | 1× 25 mm tweeter (soft dome), 1× 150 mm mid-bass (cone) |
| Frequency response | 55–25000 Hz |
| MAP (USD) | $6,990 / pair |
| Amplification (per driver) | tweeter 50 W (class AB) · mid-bass 200 W (class AB) |
| Total amp power | 250 W |
| Max SPL @ 1 m | 108 dB |
| Hi-res audio | — |
| Wired inputs | XLR balanced |
| Streaming / wireless | — |
| Outputs | — |
| Room correction | — |
| Primary + secondary pair | No |
| Wireless inter-speaker link | — |
| Latency | — |
| Idle power | — |
| Max consumption | — |
| Where to buy | Check availability ↗ |
| Manufacturer | atc.audio ↗ |
| Product page | Open product page ↗ |
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