QSC AP-4122m



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12-inch coaxial 2-way, 90° conical DMT



  • DMT™ (Directivity Matched Transition) in 2-way models ensures smooth, coherent power response across the listening plane
  • 3” diaphragm compression driver (1.75" on AP-4122m) delivers a clean and powerful high frequency response
  • M10 fittings and yoke mount fittings offer flexible deployment options for a variety of applications
  • Pole cup (AP-5122m and AP-4122m)
  • Two M20 pole attachment points on AP-212sw
  • Clean industrial design with unadorned grilles complement most decors and settings
  • NL4 Speakon connector (two on AP-4122m and AP-212sw) and covered barrier strip terminals (except AP-4122m and AP-212sw)
  • Bi-amp / passive switchable (passive only on AP-4122m), except AP-212sw subwoofer
  • Constructed from 15-ply Baltic birch plywood (15 mm Baltic birch plywood on AP-4122m and AP-212sw)
  • 16-gauge powder coated steel grilles
  • Available in black (RAL 9011) and white (RAL 9010) (black only on AP-4122m and AP-212sw)
  • Complete EASE, CAD & BIM information available online

Frequency response (-10 dB)

55 Hz - 20 kHz

Rated noise power / voltage1

325 watts / 36 volts rms

Broadband sensitivity2

96 dB SPL

Coverage angle

90? conical DMT

Directivity factor (Q)


Directivity index (DI)


Recommended crossover


Maximum SPL at 1 m (passive)

121 dB continuous3
127 dB peak4

Rated impedance


HF transducer

45 mm (1.75-inch) voice coil, compression driver

LF transducer

305 mm (12-inch) driver with 64 mm (2.5-inch) voice coil

Optional accessories

AP-YM12M Yoke mount 
M10 Kit-W eye bolt

Enclosure details


Input connector

Two NL4 connectors

Enclosure material

15 mm Baltic birch plywood

Attachment points

Eleven M10 threaded inserts


Black (RAL 9011)


16-gauge powder coated steel

Dimensions (H×W×D)

22.5-inch × 15.1-inch × 14.5-inch / 510 × 385 × 370 mm

Net weight

18.1 kg (39.7 lb)

As part of QSC’s ongoing commitment to product development, specifications are subject to change without notice.

1 2 hour rating using IEC60268 noise based on minimum impedance 
2 Mid-band based on nominal impedance; 2.83 V at 1 m for 8? loudspeakers or 2 V at 1 m for 4? 
3 Calculated as the nominal sensitivity plus 10× the log of continuous rated power in volts squared divided by nominal impedance 
4 Calculated as the continuous calculated max output plus 6 dB

Synchrony Financial

Progressive Leasing

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