ATC SCS120 Pro

A powerful 15" professional active subwoofer delivering deep, accurate low-frequency extension for serious monitoring environments.

£5,490.00 (Inc VAT)

£4,575.00 (Ex VAT). Shipping calculated at checkout.

Special Order Item

Please be aware that this item may not be returnable, or a restocking fee may apply. For more information, kindly reach out to one of our team.

Product Information
Shipping & Returns

The ATC SCS120 Pro is a serious, high-headroom 15" active subwoofer designed for professional monitoring environments where precision, power and accuracy in the lowest octaves are essential. Hand-built in the UK and engineered around ATC’s own 375 mm long-throw sub-bass driver, the SCS120 Pro delivers deep extension, fast transient response and exceptionally low distortion, making it suitable for high-end mix rooms, mastering studios, post-production, and immersive systems including Dolby Atmos installs.

At the heart of the system is a discrete Class A/B MOSFET power amplifier pushing 300 watts of clean, controlled output. The sealed enclosure design ensures tight, accurate bass without the smearing or overhang often associated with ported subwoofers, making integration with ATC’s mid-field and main-monitor systems seamless and predictable.

Flexible filtering and alignment tools make system matching straightforward. Users can select 50 Hz, 65 Hz, 80 Hz or 320 Hz low-pass crossover points, or bypass the filter entirely if an external controller is preferred. A stepped level control, gain trim, polarity switch and continuously variable phase adjustment from 0–180° give full control over alignment to the main monitors. Balanced XLR inputs and link outputs allow simple integration into stereo, surround, or multi-sub configurations, and a footswitch input provides remote mute if required.

Physically, the SCS120 Pro is built for professional use: robust cabinetry, fanless convection cooling, and ATC’s renowned build quality with a 6-year warranty. At 44.5 kg it’s solid, but compact relative to its output capability, and fits naturally into high-performance studio systems demanding clean extension down to 20 Hz.

Key features include:
• 15" hand-built ATC sub-bass driver
• 300 W Class A/B MOSFET amplifier
• Sealed cabinet for tight, accurate low end
• Selectable 50–320 Hz low-pass filters or bypass
• Full alignment controls including level, phase, and polarity
• Balanced XLR I/O with link outputs
• Suitable for stereo, surround and Atmos systems

Shipping – For next day delivery you must order before 3.30pm

UK Mainland – Orders over £99 qualify for FREE standard shipping (1-3 working days) We also offer a range of chargeable express shipping options for next working day, pre 12pm, pre 10.30am, Saturday deliveries and deliveries on a specific date. Our main UK courier is DPD.

UK Non Mainland – Not eligible for free shipping. These areas include (but are not limited to) Isle of Man, Isle of Wight, Isles of Scilly, Jersey, Guernsey, Northern Ireland, Orkney, Scottish Highlands and Shetland. Shipping costs for these ares will be calculated at checkout.

International/Export – Delivery charges will be calculated at checkout. All orders that are in stock we aim to dispatch from our warehouse within 48 hours. We ship all orders outside of the UK, NI, Isle of Man, Channel Islands via Fedex. All prices and delivery charges are exclusive of VAT for export. The customer is responsible to pay for any additional duties and charges.

Need to return an item? No problem.

If you have an SX Pro account:
Login, go to your Order History find the invoice for the item you want to return, click on the invoice then select “Request a return”, then select the item and quantity you want to return. This will take you to the returns form, simply fill it in and wait for our response.

No account, or orders prior to 31/03/2021
Simply fill out the returns form on this page and wait for our response.

Read more on our returns page

ATC SCS120 Pro

Representative Example

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Shipping – For next day delivery you must order before 3.30pm

Need to return an item? No problem.