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ATC Loudspeakers
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ATC Loudspeakers SCM20ASL Pro (pair)



The ATC Loudspeakers SCM20ASL Pro brings together the experience and tradition of 20 years of ATC design with the latest advances in materials technology, and a radical design of speaker cabinet. The result is a highly portable active monitor capable of high volume and unerring accuracy - the ultimate transportable monitor system. By employing a Super Linear magnet in a new version of the renowned 150mm mid/bass drive unit, along with a 25mm tweeter, the SCM20ASL Pro delivers true reference monitoring that you would expect only in a large 3-way monitor.

The active 2-way design incorporates two separate amplifier blocks in each cabinet - 250W for bass/mid and 50W for high frequencies - and will deliver continuous SPLs of up to 108Db/1M. Right up to the highest volume, however, the matched amp and driver system maintains ultra-low distortion, solid stereo imaging, and a high degree of linearity.

A rear panel selector provides five different LF boost settings, as well as a flat Reference setting, tailoring the SCM20ASL Pro's low end response to different monitoring environments. The elegant lines of the die cast aluminium cabinet are functional as well as aesthetic, incorporating a carry handle and large cooling fins, and providing superb structural integrity. Universal Omnimount fixings are built into the cabinet, for flying or wall mounting.


About ATC Loudspeakers' PRO series monitors

Manufactured in-house to exacting tolerances, ATC's drive units are legendary for their many design innovations. Hand-wound, short voice coils use only high density edge wound, flat OFC wire and operate in precision long magnetic gaps. Front and rear magnetic venting not only reduces airflow noise, but increases power handling and long term reliability. Massive, motor assemblies offer no-compromise optimisation for each voice coil diameter.

The unique "Soft Dome" technology in the form of the latest SM-150s was originally developed by ATC in 1976 and is featured in the SCM 50, 100, 150, 200 and 300. Its arrival revolutionised professional studio monitoring for all time. Remarkable today, as then, it remains the only mid-range devise capable of giving ultimate performance. The "Super Linear Technology" found in the professional range 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 drive units.

With clever use of revolutionary materials developed for the communications industry, the problem has been solved for all time in the form of ATC "SL" drive units.They are unique not only in their ability to accurately reproduce piano, but also in precise manner in which they articulate male voices.This is hardly surprising given the reduction of third harmonic distortion by 10-15 dB between 100Hz and 3kHz achievable with this system.

Each drive unit in ATC professional monitors is powered by its own grounded source amplifier, optimised for its relevant bandwidth. Each amplifier, working substantially in Class A, features an even order filtered active crossover individually aligned and phase-corrected for unmatched stereo imaging. Each professional product is backed by a 6 year warranty, 24 hour spares turn round and factory technical support.


ATC Loudspeakers SCM20ASL Pro (pair)'s specifications

  • Max Continuous SPL: 108dB
  • ATC Bi-Power: 1@250W/1@50W per speaker
  • ATC custom built internal amplifiers
  • Crossover: 2.5kHz, 4th order, active, internal
  • Bass: Single 6.5" ATC custom built SL driver
  • Hi: Single 1" dome tweeter, wave guide loaded
  • Actual H/W/D (inches): 17.6/10.6/12.2
  • Actual Weight 66lbs
  • Shipping Weight: 70lbs in carton

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