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ATC Loudspeakers SCM12 Pro 2-Way Passive Monitor - Pair

Compact high-performance 6-inch, 2-way passive studio monitor suited for critical near-field listening

Product Description

The ATC SCM12 Pro is a passive two-way studio monitor that combines outstanding clarity and class-leading dynamic range in a compact, affordable package. Equipped with a state-of-the-art CLD mid/bass driver and a dual-suspension tweeter, SMSC12 Pro monitors deliver balanced, neutral sound with a wide sweet spot. With high-performance components a compact footprint, SMSC12 Pro monitors are ideal for critical near-field listening in small-to-medium control rooms.


The ATC SMSC12 Pro features a one-inch soft dome tweeter with an innovative dual suspension design for silky smooth highs up to 22 kHz. Unlike conventional tweeters, ATC’s dual suspension tweeters offer far greater control of the voice coil and dome motion—especially at higher sound pressure levels. By reducing internal distortion, this groundbreaking design delivers detailed highs with improved clarity and definition. ATC’s dual suspension tweeters also significantly reduce listener fatigue, allowing you to work on long mixing projects without losing perspective.


SMSC12 Pro studio monitors are equipped with ATC’s legendary six-inch Constrained Layer Damping (CLD) mid/bass driver. With a 1.75-inch diameter voice coil, and a Finite Element Analysis (FEA) optimized high-energy symmetric gap motor system, CLD drivers deliver an extended dynamic range for powerful, distortion-free low-end even at high SPLs. ATC’s Constrained Layer Damping technology uses multiple laminated fabric cones to form a stiff, light, driver cone for smoother on- and off-axis frequency response and minimal distortion.


SMSC12 Pro studio monitors feature a high-performance passive crossover with 250 VDC metalized polypropylene capacitors and hand-wound air-cored type inductors for minimal signal loss and distortion. While SMSC12 Pro studio monitors are designed to work with any traditional power amp, they perform best when paired with ATC’s 150 W per-channel P1 Pro dual-mono power amplifier. With class-leading power output and outstanding sonic resolution, ATC power amps deliver unparalleled performance.


  • Compact high performance 2-way studio monitor
  • Ideally suited for critical near-field listening applications in all control rooms and LCR surround monitoring in small-to-medium control rooms
  • Proprietary ATC 150 mm/6 in CLD Mid/Bass Driver
  • Proprietary ATC 25 mm/1 in Dual Suspension Tweeter
  • 6 year warranty


  • Drivers: HF ATC 1˝/25 mm dual suspension Soft Dome (SH25-76 6 Ohm) / LF ATC 6˝/150 mm Constrained Layer Damping (CLD) (SB50-150CLD 8 Ohm)
  • Amplitude Linearity: 80 Hz – 16 kHz (±2 dB)
  • Cut Off Frequencies: 56 Hz – 22 kHz (-6 dB freestanding)
  • Dispersion: ±80° Coherent Horizontal, ±10° Coherent Vertical
  • Maximum Continuous SPL: 108dB (per pair @ 1m)
  • Crossover Frequency: 2.2 kHz
  • Recommended Power Amplifier: 75 to 300 Watts
  • Nominal Impedance: 8 Ohm
  • Connectors: Binding Posts/4mm Plugs, bi-wire
  • Cabinet Dimensions (HxWxD): 400 x 238 x 235 mm/15.7˝ x 9.4˝ x9.3˝
  • Weight: 11 kg/24 lbs (per cabinet)

Product Specifications

Condition New
Length 9.3 in
Width 9.4 in
Height 15.7 in
Unit Weight 24 lb
Active or Passive Passive
Monitor Application Near-Field
Speaker Configuration Two-Way
Driver Sizes HF: ATC 1" dual suspension soft dome / LF: ATC 6" Constrained Layer Dampening
Number of Speakers Pair
Input Connectors Speaker
Impedance 8 Ohms
Frequency Range 56 Hz - 22 kHz
Max. SPL 108 dB continuous @ 1 m

Product Reviews

4.9 out of 5 stars.
Review Count (8)

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I absolutely love my ATC speakers! I have a 7.1.4 setup with 3 ATC SCM25’s and 8 scm12 pro’s. The listening field is amazingly transparent, like you don’t feel like the sound is coming from speakers. The accuracy and detail of what I hear while working really enables me to make quick and accurate decisions. VK was incredibly helpful getting me going.

By Studio T on June 13, 2022

Fabulous speakers that reveal subtleties and detail with a precise sound stage... Coming from Focal solo6 be with sub6 to the SCM12 I was surprised how low these speakers go without sub. I hooked them up with Hypex UCD400 Stereo Kit- 400W and found them to be a great match. Special thanks to Mike Canarious and Dave Fisk for their help... I had great conversations with them....

By Nelson H on June 9, 2022

Very musical and natural sound! No ear fatigue. I love them

By Jose S on May 2, 2022

I love these speakers. The treble is understated and silky and I can easily work an hour 8 day on them. There is very little awkward transition at the crossover point between the drivers - the midrange is solid and reliable. The low end sounds "bunched up" a bit, not peaky and unreliable, rather a broad, warm and punchy emphasis in the low mids.

I don't recommend them for a primary set of monitors - they present no sub information to speak of (which, as a closed box design, isn't surprising). The leaning towards the low mids gives these monitors are certain lens that is great for certain tasks, not great for others. They are pairing really well with my Genelec mid-fields (which can suffer from an overly clinical sound devoid of low-mid warmth), and Neumann nearfields (which are scooped sounding).

By Jason R on December 23, 2021

These are great, truly professional speakers. Immediately they revealed problems in my mix that I didn’t even hear on my previous speakers. The problems really stand out. Listening to reference recordings were equally revealing. On a classical record with Jacquelin Dupree I heard a musician cough in the back of the orchestra that was quite distracting which I never even heard before. On the Stones “Some Girls” album, a voice in one of the background vocals stood out as clearly not one of the Stones. There is a neutrality to these speakers that is hard to describe, but it is like the sound is coming out of a totally silent, flat background.

By Lawrence A on February 25, 2021

They sound killer. P.S. -Use a Class A amp with them and they will be very happy. Thank you Mark Smak for helping make things smooth in the order process.

By Luke on November 14, 2020

They sound great!

By Keung H on June 18, 2020

Finally can mix for hours. Very musical.

By Valery F on March 13, 2019

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How do you rate this product?
I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
James P.
Thank you so much! Vintage King has been so fair and easy to work with. I can't thank you enough. It feels good to trust such a hefty purchase to folks who are so helpful and knowledgeable. Vintage King is a sound designers dream store.
Noa L.
You guys have excellent customer service and I am excited about the next upgrade I complete on my fifth recording facility. I've been in the studio business for forty plus years. The salesman I worked with at Vintage King was the best of the best. You all rock!
Robby T.
I would recommend Vintage King to any one looking for top-class gear, unbeatable customer service and the best prices on the map!
Jake D.
My experience with Vintage King was excellent. The order was here fast considering it was out of stock. The sales person had SKB send it to me directly and I couldn't have been more pleased.
Michael D.
From the minute I placed my order I was kept well-informed through each step in your process. Even though I was buying a comparatively modest piece of gear, your attention to detail made me feel like I was purchasing a six-figure mixing desk.
Thomas W.
I am a new customer of yours. You guys provided me the absolute best deals in ordering all the equipment to power my brand new recording studio. Your customer service is amazing and i will always deal with you from here on out.
Rob M.
Thanks for your great service and getting this out today. You guys really are the Kings!
Alan B.
Better than expected! Truly impeccable service. Your team was professional, knowledgeable, provided speedy delivery above and beyond standard. Vintage King Audio is definitely my go to for all of my audio and information needs.
James O.