Introducing its SSM (Studio Surface Monitor) series, ATC announced the availability of SSM12i Pro and SSM25i Pro as two new wall-/ceiling-mount passive studio monitors — making use of a shallow cabinet depth, proprietary mounting hardware, and reinforced cabinet to target surround and immersive audio installations, especially those in smaller control rooms — alongside R4-150 Pro, produced as a new four-channel power amp to compliment them.
SSM series speakers feature a very shallow cabinet — SSM12i Pro’s measures just 147mm/5 13/16”, while SSM25i Pro’s is only slightly deeper at 198mm/7 13/16” (mounted flat and including the mounting hardware in both cases). The speaker can be configured to mount not only in a vertical (portrait) orientation but also horizontally (landscape) — a valuable feature when ceiling mounted as the acoustic source height is maximised while also creating greater clearance to the users in the control room below them. They also feature a mounting system that fixes flat to a wall or ceiling and allows the cabinet to pivot away from the mounting surface so aiming the speaker towards the listening position, resulting in a superior response and more precise imaging.
Obviously keen to ensure that these new loudspeakers can comfortably operate at their full potential, ATC is also announcing availability of R4-150 Pro as a new four-channel, 5U/19” power amplifier to compliment them. This shares technology with ATC’s acclaimed P1 Pro dual-mono power amplifier — herein quad-mono in operation, courtesy of four toroidal transformers. The new 5U chassis conveniently saves 2U of rack space compared to using two P1 Pro. Put it this way: R4-150 Pro is capable of 150W continuous output from each of its four channels (benefitting from Class A-B MOSFET output stages) — ideal for the dynamic content found in immersive mixes. Moreover, it also features ultra-high CMRR (Common-Mode Rejection Ratio) low-noise balanced inputs via 4x XLR while the output connections are via 4x Neutrik NL4. With fan-less convection cooling, R4-150 Pro operates silently — perfect when installed in control rooms, while thermal and D.C. offset protection and remote power on/off trigger inputs allow for flexible and reliable installation.
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