RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
V2 versionDrivers: HF ATC 25mm Neodymium, Mid 75mm ATC Soft Dome, LF ATC 164mm SC Matched Response: ±0.5dB Frequency Response (-6dB): 48Hz-22kHz Dispersion: ±80° Coherent Horizontal, ±10° Coherent Vertical Sensitivity: 85dB @ 1W @ 1metre Max SPL: 112dB Recommended Power Amplifier: 75 to 300 Watts Nominal Impedance: 8 Ohm Crossover Frequencies: 380Hz & 3.5kHz Connectors: Binding Posts/4mm Plugs, tri-wire Dimensions (HxWxD): 980 x 370 x 305mm / 38.58 x 14.56 x 12.01″ (inc. foot plinth, spikes add 25mm to height, grill adds 34mm to depth) Weight: 31kg
At USD4,395 for a used ATC SCM40, this sits squarely in the fair zone against a typical second-hand range of USD3,500–5,500, based on recent global listings and forum chatter—well below new prices hovering around USD6,000–8,000 but not a steal unless it's pristine. Ambitious if there's heavy wear, but reasonable for these pro-grade towers with their legendary SM75-150 mid dome that nails vocals like nothing else.
Before biting, verify the serial numbers match the 2014-or-later curved-cabinet version with the upgraded SH25-76 tweeter, and check for dual-suspension integrity on the mid and tweeter—no rocking or dome issues there. Probe the seller on original grilles, spikes, and any service history, as these 67-pounders demand solid amps and can show cabinet resonances if mishandled.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
ATC (Acoustic Transducer Company), a British engineering powerhouse, was founded in 1974 by innovative loudspeaker designer Billy Woodman. Initially focused on crafting custom drive units for the professional audio sector, the company quickly gained acclaim with its 12-inch PA75-314 driver, renowned for superior power handling and minimal distortion at high sound pressure levels. In 1976, ATC introduced the groundbreaking SM75-150 soft dome midrange driver, revolutionizing dispersion, bandwidth, and clarity in studio monitors.
The brand specializes in high-precision loudspeakers, designing and manufacturing its own drivers—including tweeters, midrange, and bass units—in-house for both professional and home applications. Its SCM series offers a spectrum from compact models like the SCM7 to larger formats, available in active and passive configurations. ATC also produces standalone electronics, such as preamplifiers, power amplifiers, and integrated amps like the SIA2-150, all built to uncompromising standards of accuracy and reliability.
ATC commands a elite position in the high-end hi-fi market, revered by recording studios worldwide for its transparent, detail-revealing monitors and by discerning audiophiles for domestic speakers that deliver reference-grade performance. A professional ethos, advanced materials, and innovations like the Super Linear Driver—slashing distortion in the vocal range—cement its status as a boutique leader, where precision engineering trumps mass production.
See all ATC listings on RADAR.
