Price is for one pair of speakers
“The quality of ATC’s design and construction is apparent upon opening the box. Just by looking at them, you can tell that the utmost care and consideration went into the engineering and design of these monitors – and it’s even more apparent once you start to listen through them. From recording to mixing, the ATCs perform flawlessly on rock, pop, hip-hop, jazz, or orchestral. I know what I’m hearing is what I’m getting.” – Alex Williams, Grammy Award-winning sound engineer
“There’s no getting away from the fact that the SCM25A is an expensive monitor, but the accuracy and quality really does justify the price. This modestly sized monitor maintains the very high standards set by its larger siblings, but in a more compact format, and without giving much away in terms of bass extension. Very impressive — but only audition them if the funds are available in the bank… You won’t want to go back to your old monitors afterwards!” – Sound On Sound
“These monitors are no small investment but they are real- world tools that help me work more efficiently and keep me focused and creative for longer periods of time – while they sit at the heart of every decision I make. For that, I feel the SCMS25As are totally worth it.” – Tape Op
A highly revealing and meticulously crafted monitor speaker, offering outstanding performance even in compact environments
The ATC SCM25A Mk2 is a compact, 3-way active monitor designed for nearfield applications requiring critical listening. It features a 6.5″ bass driver, an ATC 3″ midrange driver, and an ATC SH25-76S 1″ soft dome tweeter, delivering extended bass response and exceptional midrange clarity.
ATC’s proprietary drive units, designed and manufactured in-house, ensure precise performance. The 6.5” (164mm) bass driver handles frequencies below 380Hz, while the 3” (75mm) soft dome midrange driver covers 380Hz–3.5kHz. High frequencies above 3.5kHz are managed by ATC’s SH25-76S Dual-Suspension 1” (25mm) soft dome tweeter, which represents the key upgrade from the Mk1 to the Mk2. The ported enclosure is tuned to 32Hz, with a 3” (75mm) flared port to minimize air noise.
The SCM25A Pro Mk2 is powered by an integrated 3-way Class A/B amplifier mounted on the rear panel, with each driver having its own dedicated amp. Inputs include a balanced 3-pin XLR, with power supplied via an IEC mains inlet. User controls allow for input sensitivity adjustment and bass boost. Fourth-order Linkwitz-Riley crossovers, along with all-pass filters, optimize phase response for improved tonal accuracy, imaging, and off-axis performance. FET peak limiters protect against amplifier hard-clipping. A bi-color LED on the front panel indicates power and limiter status.
Features
- Loaded with ATC’s proprietary handmade dual-suspension drivers
- 6.5-inch short-coil low-frequency driver; 3-inch soft-dome midrange driver; 1-inch soft-dome tweeter
- Wide dispersion vs frequency for excellent stereo imaging over a large listening area
- ATC discrete MOSFET class A/B amp-pack delivers high dynamic range in combination with very low distortion and an extended HF bandwidth
- 4th order active crossovers with all-pass phase compensation ensure outstanding driver integration
- Input sensitivity and bass ‘lift’ user controls
- Hand-built in England and covered by a 6-year warranty
Specifications
Acoustic Specifications
- Drive Units Bass: 1 x SB50-164SC 8Ω
- Mid: 1 x SM75-150 16Ω
- HF: 1 x SH25-76S 6Ω Compact
- Low Frequency Cut-off: 47Hz (-6dB, anechoic).
- High Frequency Cut-off: 25kHz (-6dB).
- Max SPL: 109dB continuous / 115dB peak (Per pair, IEC Weighted Pink Noise, 1m, anechoic).
- Sensitivity: +4dBu ref 92dBC (Bass Boot 0dB, Input Sensitivity 1V, Pink noise).
Electronic Specifications
- Balanced Input: 1 x Rear Panel Mounted Female XLR, pin 2 hot.
- Input Impedance: 20kΩ (differential).
- Input CMRR: >82dB (10kHz).
- Input Sensitivity: 2.2dBu / 1Vrms for full power
- Input Sensitivity Control: Continuously Variable from 2.2dBu – 8.2dBu / 1Vrms – 2Vrms (-6dB)
- Bass Boost Control: Continuously variable from 0dB to +3dB.
- Crossover Filters: 4th Order Linkwitz-Riley at 380Hz and 3.5kHz.
- Frequency Response: <2Hz to >200kHz (-3dB).
- Amplifier type: Grounded Source MOSFET based Class A/B, convection cooled.
- Output Power: Bass 150W (8Ω), Mid 60W (8Ω), HF 32W (6Ω)
- THD+N: <0.003%/-92dB (1kHz, 1dB below rated power, 90kHz BW)
- Limiter: ATC Active FET Momentary Gain Reduction, limiter ‘active’ indicated via front panel LED.
- Mains Input: 220-230V or 115V – Factory set. Please observe panel markings and labels!
- Power Consumption: Idle 24W/35VA. 1/8th Power 117W/159VA. Full Power 255W/324VA.
- Heat Output: Idle 82BTU/hr. 1/8th power 335 BTU/hr. Full Power 358BTU/hr.