Screen Channel Loudspeakers

A built-in tilt to the high-frequency horns on 3- and 4-way systems provides more even convergence with the mid-range pattern, ensuring optimum seating-area coverage.

The Digital Cinema Series (DCS) includes 2-way, 3-way, and 4-way screen channel loudspeakers. It’s a diverse collection, but every model embodies QSC attention to detail in design and construction. The result is the smartest loudspeaker line in cinema, starting with a host of innovations built into our screen channel lines.

The pan-tilt mechanism for mid-high components makes quick work of assembling and aligning screen channel systems. The assembly is labeled for repeatability and features a notched tilt adjustment to maintain vertical alignment.

An exclusive integrated sight that works even after the screen has been installed, CineSight allows fast, accurate aiming without having to remove the driver.

The broad-range mid-frequency driver in 3- and 4-way DCS systems keeps key speech frequencies together for superb dialog intelligibility.

New features and functions

The 2.1 firmware release is a critical update that addresses mixer stability and reliability issues. It is highly recommended for all TouchMix owners and users.

  • Support for Android devices
  • Support for MIDI-over-USB Footswitches
  • Option to Omit Output Settings from Scene Recall
  • Multi Language Info System - In addition to English, the mixer’s built-in Info system and demo screens now include user selectable options for Chinese (Mandarin), French, German, Russian and Spanish
  • Auxiliary buses may now be assigned to the Main Left and Right outputs, allowing any auxiliary to function as a sub-group.

A built-in tilt to the high-frequency horns on 3- and 4-way systems provides more even convergence with the mid-range pattern, ensuring optimum seating-area coverage.

Model-specific DSP presets in our DCP, DXP, DCM, BASIS™ and Q-SYS™ processors optimizing our loudspeakers for great performance right out of the box.

The driver protection and equalization network in our screen channel systems improves reliability by protecting HF drivers against damaging DC or low frequency signals.

Born To Fly

The ultimate flown cinema speaker

Whether they’re Large Format or simply large, the biggest auditoriums often call for dome and point-source speakers to be suspended from above rather than resting on platforms. Built around the same driver technology that goes into our top-line 3-way and 4-way screen channel loudspeakers, QSC’s SC-423C-F and SC-424-8F deliver no-compromise audio fidelity in a package that is expressly designed for the unique requirements of suspension.

  • Tough birch-ply enclosure patterned after our rugged tour-grade loudspeakers makes the SC-423C-F and SC-424-8F light but strong. 
  • M10 attachment points supported by internal steel brackets accommodate all common suspension systems to ensure safe and easy installation. 
  • Consistent external dimensions in horizontal or vertical orientation facilitate maximum hanging flexibility for high- and low-frequency cabinets.

SELECT A MODEL

2-Way Passive

Model SC-1120 SC-1150 SC-312XC SC-322XC
Low Component LF: 12" (305 mm) woofer,
2.5" voice coil
 LF: 15 in. (380 mm) woofer LF-3115 LF-3215
High Component HF: Compression driver with
1.75" (44 mm) voice coil
HF: Compression driver with 1.75"
(44 mm) voice coil
HF-75Cx1 HF-75Cx2
Frequency Range (-6dB) 48 Hz to 19 kHz 43 Hz to 19 kHz 32 Hz - 16 kHz 32 Hz - 16 kHz
Nominal Coverage 90 degrees Axisymmetric 90° H x
+15° to -35° V
Impedance
Rated Noise Power1  300 W RMS 400 W RMS 150 W RMS 300 W RMS
Sensitivity2 95.5 dB 96 dB 95 dB 97.5 dB
System Dimensions (HWD) inches 27.2 x 19.5 x 11.7 27.2 x 30 x 11.7 34.59 x 30 x 20.25 51.71 x 30 x 20.25
System Dimensions (HWD) mm 690 x 497 x 297 690 x 762 x 297 876.6 x 762 x 514.4  1313.5 x 762 x 514.4
  Details Details Details Details

1 8 hours of 6 dB crest factor IEC 268 noise spectrum / 2 hours of 6 dB crest factor pink noise, AES method.
2 Based on nominal impedance, measured in half space 1 W @ 1 m

2-Way Bi-amp

Model SC-412C SC-322C SC-422C
Low Component LF-4115  LF-3215 LF-4215
High Component HF-75C HF-75C HF-75C
Frequency Range (-6dB) 32 Hz - 16 kHz 32 Hz - 16 kHz 32 Hz - 16 kHz
Nominal Coverage 90° H x
+20° to -35° V
90° H x
+20° to -35° V
90° H x
+20° to -35° V
Crossover Frequency (Hz) 24 dB/octave 700 700 700
System Dimensions (HWD) inches 34.59 x 30 x 20.25 51.71 x 30 x 20.25 51.71 x 30 x 20.25
System Dimensions (HWD) mm 876.6 x 762 x 514.4 1313.5 x 762 x 514.4 1313.5 x 762 x 514.4
  Details Details Details

3-Way Bi- or Tri-amp

Model SC-21501 SC-413C SC-323C SC-423C  SC-423C-F  SC-423C-8 SC-433C SC-443C
Low Component 2150-LF LF-4115  LF-3215  LF-4215 LF-4215-F  LF-4215-8 LF-4315 LF-4215 x 2
High Component 2150-HF  MH-1075C MH-1075C  MH-1075C  MH-1075C-F  MH-1075C MH-1075C MH-1075C
Frequency Range
(-6dB)
38 Hz - 20 kHz  32 Hz - 16 kHz 32 Hz - 16 kHz 32 Hz - 16 kHz 32 Hz - 16 kHz 32 Hz - 16 kHz 32 Hz - 16 kHz 32 Hz - 16 kHz
Nominal Coverage 90° H x
40° V
90° H x
+20° to -30° V 
90° H x
+20° to -30° V
90° H x
+20° to -30° V
90° H x
+20° to -30° V
90° H x
+20° to -30° V
90° H x
+20° to -30° V
90° H x
+20° to -30° V
Crossover Frequency
(Hz) 24 dB/octave
500/2200 250/1700 250/1700 250/1700 250/1700 250/1700 250/1700 250/1700
System Dimensions
(HWD) inches
55.6 x 30 x 14.5 57.43 x 30 x 20.25 74.55 x 30 x 20.25 74.55 x 30 x 20.25 V: 80 x 31.5 x 19
H: 40 x 63 x 19
74.55 x 30 x 20.25 92 x 30 x 20.25 110.3 x 30 x 20.25
System Dimensions
(HWD) mm
1412 x 762 x 368 1458.7 x 762 x 514.4 1893.6 x 762 x 514.4 1893.6 x 762 x 514.4 V: 2032 x 800 x 483
H: 1016 x 1600 x 483
1893.6 x 762 x 514.4 2337 x 762 x 514.4 2801.7 x 762 x 514.4
  Details Details Details Details Details Details Details Details

1 SC-2150 is passive or bi-amp only; not designed for tri-amp operation.

4-Way Tri- or Quad-Amp

Model SC-414 SC-324 SC-424 SC-424-8 SC-424-8F1 SC-434 SC-444
Low Component LF-4115 LF-3215  LF-4215 LF-4215-8  LF-4215-8F LF-4315 LF-4215 x 2
High Component MHV-1090  MHV-1090 MHV-1090 MHV-1090  MHV-1090F MHV-1090 MHV-1090
Frequency Range
(-6dB)
33 Hz - 20 kHz 33 Hz - 20 kHz 33 Hz - 20 kHz 33 Hz - 20 kHz 33 Hz - 22 kHz 33 Hz - 20 kHz 33 Hz - 20 kHz
Nominal Coverage 90° H x +20° to -30° V 90° H x +20° to -30° V 90° H x +20° to -30° V 90° H x +20° to -30° V 90° H x +20° to -30° V 90° H x +20° to -30° V 90° H x +20° to -30° V
Crossover Frequency
(Hz) 24 dB/octave
250, 1700, 6K 250, 1700, 6K 250, 1700, 6K 250, 1700, 6K 250, 1700, 6K  250, 1700, 6K 250, 1700, 6K
System Dimensions
(HWD) inches
57.43 x 30 x 20.25 74.55 x 30 x 20.25 74.55 x 30 x 20.25 74.55 x 30 x 20.25 V: 80 x 31.5 x 19
H: 40 x 63 x 19
92 x 30 x 20.25 110.3 x 30 x 20.25
System Dimensions
(HWD) mm
1458.7 x 762 x 514.4 1412 x 762 x 368 1893.6 x 762 x 514.4 1893.6 x 762 x 514.4 V: 2032 x 800 x 483
H: 1016 x 1600 x 483
2337 x 762 x 514.4 2801.7 x 762 x 514.4
  Details Details Details Details Details Details Details

Tri-amp only; not designed for quad-amp operation.