The ATC SCM40 ranks #181 out of 188 total Large Size Floorstanding Speakers for sound quality. See all Passive Home rankings for every top pick.
Brand: ATC
Prices on this page were last checked October 7, 2026 at 9:25 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#181 ATC SCM40: $7,999.00 per pair Estimated Acoustic Frontiers eBay
Same family: the ATC SCM19 (bookshelf, rated 2.4/5).
Pros: A 3-way tower built around ATC’s 75mm soft dome midrange, the pro-audio driver that gives ATC its reputation for clean, dynamic vocals, with a 25mm tweeter and a 164mm woofer (crossovers at 380Hz and 3.5kHz). Each pair is matched to ±0.5dB and the cabinet is a heavy 31kg.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from the measured ATC SCM19, which showed too little bass, a forward midrange to treble balance and a 4dB resonance near 700Hz. Sensitivity is a low 85dB and ATC recommends 75 to 300 watts, and bass is rated only to 48Hz (-6dB).
| Crossover Frequency | 380Hz, 3.5kHz |
|---|---|
| DIY Kit | No |
| Dimensions | 38.6”H x 14.6”W x 12”D (980 x 370 x 305 mm) |
| Drivers | 25mm soft dome tweeter, 75mm soft dome midrange, 164mm woofer |
| Frequency Response | 48Hz - 22kHz -6dB (manufacturer specified) |
| Impedance | 8 ohms nominal (manufacturer specified) |
| Maximum SPL | 112dB (manufacturer specified) |
| Sensitivity | 85dB (1W/1m, manufacturer specified) |
| Weight | 68.3 lbs (31 kg) each |
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- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.