SCS120 Pro Subwoofer

 

The ATC Studio Control Subwoofer (SCS) series are high-performance active subwoofers designed to partner ATC’s Professional monitors. They are suited for stereo, multi-channel surround, and immersive audio systems. The SCS120 Pro uses a meticulously optimized sub-bass driver engineered to reproduce the lowest three octaves of the audio band, featuring a short voice coil operating within an exceptionally long magnetic gap to deliver high sound pressure levels with very low distortion.

 

Each subwoofer includes a front-mounted panel with two status LEDs indicating power/limiting and mute conditions. The subwoofer output can be muted via a latching footswitch connected to a ¼” (6.35 mm) jack socket, with the ability to mute multiple daisy-chained subwoofers via a mute ‘Thru’ connection. A 300W Class AB convection-cooled amplifier is integrated (or remote-mounted in the case of in-wall models), offering two balanced inputs, buffered unfiltered outputs, 21 dB gain range, three low-pass frequency settings, polarity switch, and continuously variable 0-180° phase control. The low-pass filter can be bypassed by setting it to ‘Off’ (320 Hz) for external processing. Fault monitoring for panel temperature and DC offset is included, with a red LED indicating faults.

 

 

A 120-litre sealed cabinet design equipped with the ATC SS75-375SC 15” (375 mm) sub-bass driver for higher SPL and greater bass extension, making these subwoofers best suited to mid/larger studio installations. The SCS120 Pro is a free-standing subwoofer with a rear-mounted amplifier integrated into the cabinet.

 

Key Features:

ATC HAND-BUILT HIGH-EXCURSION 15”/375MM SS75-375SC SUBWOOFER DRIVER

EXCEPTIONAL BALANCE OF HIGH SPL CAPABILITY, LOW CUT-OFF AND LOW DISTORTION

IDEAL PARTNER TO SCM45A/SCM50ASL/SCM100ASL/SCM110ASL/SCM150ASL/SCM200ASL/SCM300ASL

ATC DISCRETE MOSFET CLASS AB POWER 300W AMPLIFIER

STEREO BALANCED XLR INPUTS & STEREO ‘LINK’ XLR BALANCED OUTPUTS

LEVEL, LOW-PASS FREQUENCY & PHASE USER CONTROLS

REMOTE MUTING VIA FOOTSWITCH*

HAND-BUILT IN ENGLAND AND COVERED BY A 6 YEAR WARRANTY

 

PRODUCT MANUAL PDF LINK

 

DATA SHEET PDF LINK

 

ACOUSTIC SPECIFICATIONS
Drive Unit: ATC SS75-375SC 8Ω
Low Frequency Cut-off: 20Hz (-6dB, half space, low pass filter set at 80Hz)
Low Pass Filters: 50Hz, 65Hz, 80Hz, 320Hz. (-6dB, 4th order Linkwitz Riley)
Max SPL: 113dB continuous, 119dB peak (IEC Weighted Pink Noise, measured at 1m, half space, low pass filter set at 80Hz)
Sensitivity: 85dBC, ref. -17dBu (single channel driven, Gain +6dB, Level 0dB, pink noise, low pass filter set at 80Hz)
ELECTRONIC SPECIFICATIONS
Balanced Input: 2 x Rear Panel Mounted Female XLR, pin 2 hot
Input Impedance: Approx. 20kΩ (differential)
Input CMRR:` 90dB at 200Hz
Input Sensitivity: 1.12Vrms for full power (single channel driven, Gain 0dB, Level 0dB)
Gain Control: 0, +6dB, +10dB
Level Control: 0dB -11dB in 1dB steps. Total range 21dB with use of Gain switch
Phase Control: 0-180° ref. Input
Polarity Control: In-phase/Out-of-phase ref. Input
Low Pass Filters: 4th Order Linkwitz Riley
Output Impedance: Approx. 100Ω (differential)
Amplifier Type: Grounded Source MOSFET based Class A-B, convection cooled
Output Power: 300W in to 8Ω
THD+N: <0.003%/-90dB, at 100Hz, 300W into 8Ω over 90kHz bandwidth
Frequency Response: <2Hz (-3dB) – 320Hz (-6dB, set by panel-controlled LP filter)
Limiter: ATC Active FET Momentary Gain Reduction, active limiter indicated on front panel
Electronic Amp Protection: Amplifier D.C Offset and over-temperature (both indicated on rear panel)
Power Consumption: Idle 16W/60VA, 1/8th Power 170W/230VA, Full Power 500W / 600VA
Mains Input: 220-230V, 115V – Factory set. Please observe panel markings and labels.
Heat Output: Idle 47.8 BTU/hr, 1/8th Power 458.9 BTU/hr, Full Power 682.4 BTU/hr.
Additional: Mute via ¼”/ 6.35mm Jack socket, controlled via latching footswitch.
PHYSICAL SPECIFICATIONS
Product Weight: 98.1lbs
Product Dimensions: (H x W x D): 25 1/8 x 19 5/8 x 22 6/16 inches (heatsink protrudes a further 40mm / 1 9/16 inches from rear).
Shipping Crated Weight: 160.94 lbs
Shipping Crated Dimensions: (H x W x D): 35 x 25.2 x 31.5