SCM20A-PRO-MKII - 2-way Active Loudspeaker
The ATC SCM20A Pro mk2 is an active 2-way loudspeaker ideally suited to critical nearfield listening applications in all control rooms, LCR surround monitoring in small-to-medium control rooms, and surround channels in medium-to-large control rooms and provides faster editing with more consistent results on EQ'ing and balancing and less listening fatigue.
ATC’s 150mm/six-inch Super Linear bass/mid driver with a 75mm/three-inch voice coil and a short-coil, long-gap topology combines the high-power handling and low-power compression usually only found in large, high-efficiency systems with the fine resolution and balance of modern highfidelity systems. As a perfect complement the ATC SCM20A Pro mk2 features the ATC’s SH-25-76S 25mm/one-inch soft dome tweeter. With a massive neodymium motor, it provides an unparalleled linear and extended frequency response (-6dB @ 26kHz) and low non-linear distortion.
The amplifier is based on a discrete MOSFET Class A/B design with 200W and 50W continuous power available for the bass and high frequency sections, respectively and includes protection circuits for both DC offset and thermal overload. Controls for sensitivity and a low frequency shelf control help to achieve good balance in difficult acoustic conditions.
The cabinet is constructed from heavily-braced MDF. Highly damped, elastometric panels are bonded and stapled to the cabinet’s inner walls to suppress cabinet panel resonances, while the enclosure’s front panel is heavily radiused to reduce cabinet diffraction, improving the frequency response and imaging.
Features
- Compact very high performance 2-way studio monitor
- Ideally suited to critical near-field listening applications in all control rooms
- LCR surround monitoring in small-to-medium control rooms and surround channels in medium-to-large contol rooms
- Proprietary ATC 150mm/6" Super Linear Mid/Bass Driver
- Proprietary ATC 25mm/1" S-Spec Tweeter
- Discrete MOSFET class A/B bi-amp pack with 200W/50W continuous power output
- 6 year product warranty
Technical Specifications
- Drive unit - Low Frequency (LF): 6.5”/150mm Super Linear with 75mm/3" voice coil (SB75-150SL 8 Ohm)
- Drive unit - High Frequency (HF): 1”/25mm dual suspension Soft Dome (SH25-76S 6 Ohm)
- Amplitude linearity: 80Hz - 20kHz (+/-2dB)
- Cut-off frequencies: 55Hz - 25kHz (-6dB freestanding)
- Horizontal dispersion: +/-80° coherent
- Vertical dispersion: +/-10° coherent
- Maximum continuous: SPL 108dB (per pair @ 1m)
- Crossover frequency 2.1kHz
- Audio input: Rear panel mounted female xlr (pin 2 +ve)
- Input sensitivity: 1V/2V RMS or 2.2/8.2dBu via switch (ref. bass full output)
- Input sensitivity trim: 0dB to -6dB (via rear panel accessed trimmer)
- Total input sensitivity range: 1V/+2.2dBu to 4V/+14.2dBu
- Input impedance: 10kΩ per leg
- LF amp max output power: 200W continuous (1% THD)
- HF amp max output power: 50W continuous (1% THD)
- THD LF amp: 0.0006%/-104.4dB (100Hz, 1dB below rated power)
- THD HF amp: 0.0022%/-93.2dB (10kHz, 1dB below rated power)
- Crossover filters: 2nd order/ 12dB/oct critically damped with phase compensation
- HF upper -3dB point 230kHz
- S+N/N ratio - LF: 112dBA (Max. gain, ref. 40V, IEC ‘A’)
- S+N/N ratio - HF: 109dBA (Max. gain, ref. 20V, IEC ‘A’)
- Low frequency shelf cut/boost: 80Hz, -2dB to +3dB in 1dB steps (via rear panel rotary switch)
- Overload protection: Active FET momentary gain reduction (inc. front panel mounted ‘limit’ LED), Amplifier thermal trip circuit. DC offset protection.
- Mains power requirements: 115/230V, 50/60Hz (internally selectable)
- Mains power consumption: 381Watts/483VA Max
- Weight 28kg/61.6lbs (per cabinet)
- Dimensions (B x H x T): 250 x 450 x 343 mm
