The ATC Loudspeakers SCM20SL are passive nearfield monitors. This offering represents ATC's first venture into the U.S. pro market with a passive monitor. Maintaining the strict performance criteria of ATC reference monitors, the SCM20SL offers project and home studios the dynamic range and pristine imaging ATC is known for worldwide.
Designed to fit within the company's highly-regarded line of speakers, the ATC "Passive 20" features the same woofer and tweeter as the active (SCM20ASL) version of the speaker. The SCM20SL passives are housed in a conventional "pro-black" box for easy placement on any meter bridge.
ATC recommends amplifiers with at least 200W per channel of power. The Passive 20 loudspeaker enables ATC speaker fans to own a high performance monitor at half the price of the actives.
The SCM20SL Passive low-frequency section is a hybrid design incorporating a 150mm bass cone with a grafted 75mm soft dome for mid-range assist. The woofer magnet assembly utilizes ATC's unique "SL" technology to greatly reduce third harmonic distortion and reveal mistakes and details. All ATC drivers are manufactured in-house to exacting tolerances and are legendary for their many design innovations.
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.
Studio Economik New 500 series preamp from Geoffrey Daking featuring vintage Trident A Range tone, Jensen input transformer and Class A circuitry. The variable high pass filter is indispensable for tracking sessions!
