ATC SCM11 Standmount Speakers – Black Ash

A fine pair of the highly regarded original SCM11 Loudspeakers from British specialists ATC. In the black ash finish, they come in good fully working condition with a couple of minor blemishes – please see photographs. NOTE: The white patches on the drivers are NOT marks –  they are light reflections. The speakers are supplied professionally packaged with grilles, and our standard 3 month warranty.
ATC Say….
Manufactured in house to exacting tolerances, ATC’s drivers are legendary for their many design innovations. For instance, our hand-wound short voice coils use only high density edge-wound flat OFC wire and operate in a precision long magnetic gap. Front and rear magnetic venting not only reduces airflow and noise, but increases power handling and long term reliability. Meanwhile, massive motor assemblies offer no-compromise optimisation for each voice coil diameter. The unique ‘Soft Dome’ technology that features in the mid driver of our SCM 40 floor-standing monitor was developed by ATC in 1976. Its arrival revolutionised professional studio monitoring. Remarkably today, as then, it remains the only mid-range device capable of giving ultimate performance. The Super Linea Technology found in our SCM 19 model is equally ground-breaking. It has long been recognised that the detrimental effects of magnetic hysteresis is a significant factor in the production of distortion in loudspeaker drive units
With the clever use of revolutionary materials developed for the communications industry, the problem has been solved for all time in the form of ATC’s SL drive units. They are unique not only in their ability to accurately reproduce piano, but also the precise manner in which they articulate male voices. This is hardly surprising given the reduction of third harmonic distortion 10-15 dB between 100 Hz and 3 kHz. Constrained Layer Damping (CLD) is a new driver cone technology from ATC that has been integrated into the SCM11 monitor and represents a step-change in driver-to-system performance and reproduction of music. Advantages include reduced harmonic distortion between 300 Hz and 3 kHz compared to a conventional cone; extended resonance frequency response (that eases constraints on cross-over filter slopes); and improvements in off-axis response
Features:
New soft dome HF unit with precision alloy ATC wave guide
Precision undercut bass pole
New “CLD” driver technology with 45mm integral soft dome
In-house, hand-wound precision flat wire coil
Massive, optimised motor assembly
Flat impedance curve allowing easy load for amplifiers
Specifications:
SCM11: 2-way passive
Drivers : HF 25 mm Neodynium, Mid/LF 150 mm
Matched Response: +/- 0.5 dB
Frequency Response (-6 dB): 56 Hz – 22 kHz
Dispersion: ± 80° Coherent Horizontal; ± 10° Coherent Vertical
Sensitivity: 85 dB @ 1 W @ 1 metre
Max SPL: 108 dB
Recommended Power Amplifier: 50 to 300 Watts
Nominal Impedance: 8 Ohm
Crossover Frequency: 2.8 kHz
Connectors: Binding Posts/4 mm Plugs, bi-wire
Dimensions: 380 (H) x 211 (W) x 250 (D) mm
Weight: 8.5 kg

To read a review from US magazine Stereophile please click here