QSC MD-F122/124r, MD-F122/64r, MD-F122/94r, MD-F152/124r, MD-F152/64r Specification Sheet

MD Series

ModularDesign Loudspeakers

MD-F122/64r | MD-F122/94r | MD-F122/124r | MD-F152/64r

MD-F152/94r | MD-F152/124r | MD-L115 | MD-L118

Features

• All full range models feature a rotatable high-frequency
horn, enabling them to be utilized in a vertical or
horizontal configuration

• Available in either black or white finishes

The ModularDesign™ Series offers exceptional

performance in a wide variety of applications,

including houses of worship, performing arts

facilities, hotels, casinos, night clubs, and sporting

facilities. Specifying MD Series is appropriate

anywhere there is a need for dependable high

performance loudspeakers with predictable

coverage and extended frequency response. For

design / build contractors and electroacoustic design

consultants, the MD Series offers an effective

solution to the myriad of challenges encountered

in the design and implementation of permanently

installed sound reinforcement systems.

Designed as a family of modular, arrayable

loudspeakers, the full-range MD family

includes six models: three models with 12"

LF sections, and three with 15" LF sections.

Nominal coverage patterns of 60˚ x 40°,

90° x 40° and 120° x 40° are available with

either low-frequency complement. In addition,

two low-frequency only MD systems, the

MD-L115 and MD-L118, share the common

form factor of the full-range systems. All share

the same 35" tall, 30° trapezoidal enclosure as

their MD Powered Series counterparts.

The form factor common to all MD loudspeaker

models makes creating full range or combined

full range/low-frequency clusters painless.

The enclosures are designed with 30° angles;

wall-to-wall tight packing enclosures splay the

60° x 40° horns perfectly and provide uniform

coverage in any multiple of 60° to 360°. No

gaps or spacers are required and the radial

form of the front surface of the enclosures

forms a contiguous cylindrical surface for a

clean and aesthetically pleasing appearance.

• All full range and low-frequency enclosures employ the same
overall dimensions and identical attachment point locations

• All models constructed in a trapezoidal design of multi-ply
birch with a powder coated steel grille

Each enclosure is equipped with a total of

fifteen 3/8"-16 threaded attachment points

offering the installer tremendous flexibility in

suspension and mounting.

Low-frequency transducers feature technically

advanced 4" voice coils assembled with

proprietary high temperature adhesives, vented

magnet assemblies and highly optimized

motor design to provide excellent dynamic

range, flat frequency response and a very low

distortion figure.

High-frequency compression drivers feature a

Neodymium magnet motor structure and 65

mm (2.5") aluminum voice coil and titanium

diaphragm plus a pole piece mounted copper

shorting cap for extended HF response.

ModularDesign is a trademark of QSC Audio Products, Inc.

MD Series Loudspeakers

MD-F122/64r MD-F122/94r MD-F122/124r MD-F152/64r

Configuration

Low-frequency 12" transducer with 4" voice 12" transducer with 4" voice 12" transducer with 4" voice 15" transducer with 4" voice
coil, ferrite magnet coil, ferrite magnet coil, ferrite magnet coil, ferrite magnet

High-frequency 60° x 40° rotatable horn with 90° x 40° rotatable horn with 120° x 40° rotatable horn with 60° x 40° rotatable horn with

1.4
neodymium magnet neodymium magnet neodymium magnet neodymium magnet

Frequency Response (-6 dB)1 50 Hz - 18 kHz 50 Hz - 17 kHz 50 Hz - 15 kHz 50 Hz - 16.5 kHz

Frequency Range (-10 dB)1 45 Hz - 18.5 kHz 45 Hz - 20 kHz 45 Hz - 18 kHz 45 Hz - 18.5 kHz

Impedance

Passive 8

Biamp 8Ω LF / 8Ω HF 8Ω LF / 8Ω HF 8Ω LF / 8Ω HF 8Ω LF / 8Ω HF

Sensitivity 2

Passive 95 dB 95 dB 95 dB 96 dB

Biamp 95 dB LF / 110 dB HF 95 dB LF / 109 dB HF 95 dB LF / 107 dB HF 96 dB LF / 110 dB HF

RMS Power Handling

Passive 3 400 W 400 W 400 W 400 W

Biamp 4 500 W LF / 63 W HF 500 W LF / 63 W HF 500 W LF / 63 W HF 500 W LF / 63 W HF

Maximum Output at 1 m

Passive - Continuous 5 121 dB 121 dB 121 dB 122 dB

- Peak 6 127 dB 127 dB 127 dB 128 dB

Biamp - Continuous 5 122 dB LF / 128 dB HF 122 dB LF / 127 dB HF 122 dB LF / 125 dB HF 123 dB LF / 128 dB HF

- Peak 6 128 dB LF / 134 dB HF 128 dB LF / 133 dB HF 128 dB LF / 131 dB HF 129 dB LF / 134 dB HF

Recommended Amplifier Power

Passive

Biamp 1000 W LF / 125 W HF 1000 W LF / 125 W HF 1000 W LF / 125 W HF 1000 W LF / 125 W HF

Nominal Coverage (-6 dB)

Enclosure

Input Connectors Terminal strips

Suspension Points 15 load-rated attachment points that accept 3/8"-16 threaded hardware

Finish Wear resistant textured paint. Available in black and white (handles on black only)

Grille Powder-coated perforated steel with black foam backing

Dimensions (HWD) 35" x 20.5" x 16.67" 35" x 20.5" x 16.67" 35" x 20.5" x 16.67" 35" x 20.5" x 16.67"
(889 mm x 521 mm x 423.4 mm) (889 mm x 521 mm x 423.4 mm) (889 mm x 521 mm x 423.4 mm) (889 mm x 521 mm x 423.4 mm)

Weight 86 lbs (39 kg) 86 lbs (39 kg) 86 lbs (39 kg) 85 lbs (38 kg)

1) Free Field Response (4π)

2) 1W, 1M Free-Field (4π) except MD-L115 and MD-L118, which are groundplane measurements

3) Measured per AES1984

4) AES1984 50 - 500 Hz (LF), 1 - 10 kHz x (HF); Power = V 2 / Zmin

5) Calculated based on sensitivity and continuous power handling capacity

6) Calculated based on sensitivity and 6 dB peak-to-average ratio of signal used for continuous power handling test

" exit dia., 2.5" voice coil, 1.4" exit dia., 2.5" voice coil, 1.4" exit dia., 2.5" voice coil, 1.4" exit dia., 2.5" voice coil,

Ω 8Ω 8Ω 8Ω

800 W 800 W 800 W 800 W

60° x 40° 90° x 40° 120° x 40° 60° x 40°

Specifications subject to change without notice.

Specifications

MD-F152/94r MD-F152/124r MD-L115 MD-L118

Configuration

Low-frequency 15

" transducer with 4" voice 15" transducer with 4" voice

coil, ferrite magnet coil, ferrite magnet

High-frequency 90° x 40° rotatable horn with 120° x 40° rotatable horn with

1.4

" exit dia., 2.5" voice coil, 1.4" exit dia., 2.5" voice coil,

15" long-throw woofer with
4" voice coil, aluminum
demodulating ring

neodymium magnet neodymium magnet

Frequency Response (-6 dB)1 50 Hz - 17 kHz 50 Hz - 17 kHz 48 Hz - 1.8 kHz 55 Hz - 2.2 kHz

Frequency Range (-10 dB)1 45 Hz - 20 kHz 45 Hz - 20 kHz 35 Hz - 1.9 kHz 45 Hz - 2.5 kHz

Impedance

Passive 8

Ω 8Ω 8Ω 8Ω

Biamp 8Ω LF / 8Ω HF 8Ω LF / 8Ω HF − −

Sensitivity 2

Passive 96 dB 96 dB 96 dB 98 dB

Biamp 96 dB LF / 109 dB HF 96 dB LF / 107 dB HF − −

RMS Power Handling

Passive 3 400 W 400 W 900 W* 900 W*

Biamp 4 500 W LF / 63 W HF 500 W LF / 63 W HF − −

Maximum Output at 1 m

Passive - Continuous 5 122 dB 122 dB 125.5 dB 127.5 dB

- Peak 6 128 dB 128 dB 131.5 dB 133.5 dB

Biamp - Continuous 5 123 dB LF / 127 dB HF 123 dB LF / 125 dB HF − −

- Peak 6 129 dB LF / 133 dB HF 129 dB LF / 131 dB HF − −

Recommended Amplifier Power

Passive 800 W 800 W 1800 W 1800 W

Biamp 1 000 W

Nominal Coverage (-6 dB)

LF / 125 W HF 1000 W LF / 125 W HF − −

90° x 40° 120° x 40° − −

Enclosure

Input Connectors Terminal strips

Suspension Points 15 load-rated attachment points that accept 3/8"-16 threaded hardware

Finish Wear resistant textured paint. Available in black and white (handles on black only)

Grille Powder-coated perforated steel with black foam backing

Dimensions (HWD) 35" x 20.5" x 16.67" 35" x 20.5" x 16.67" 35" x 20.5" x 16.67" 35" x 20.5" x 16.67"
(889 mm x 521 mm x 423.4 mm) (889 mm x 521 mm x 423.4 mm) (889 mm x 521 mm x 423.4 mm) (889 mm x 521 mm x 423.4 mm)

Weight 85 lbs (38 kg) 85 lbs (38 kg) 90 lbs (41 kg) 89 lbs (40 kg)

1) Free Field Response (4π)

2) 1W, 1M Free-Field (4π) except MD-L115 and MD-L118, which are groundplane measurements

3) Measured per AES1984

4) AES1984 50 - 500 Hz (LF), 1 - 10 kHz x (HF); Power = V 2 / Zmin

5) Calculated based on sensitivity and continuous power handling capacity

6) Calculated based on sensitivity and 6 dB peak-to-average ratio of signal used for continuous power handling test
* AES1984-2, 40 - 400, 2 hours; Power = V 2 / Zmin

18" long-throw woofer with
4" voice coil, aluminum
demodulating ring

Specifications subject to change without notice.

MD Series Loudspeakers

Top

5"

127 mm

5.6"

142.2 mm

20.5"

521 mm

60°

127 mm

9.24"

234.7 mm

Dimensions

5"

8.88"

225.6 mm

1.75"

44.5 mm

15.75"

400.1 mm

35"

889 mm

15.75"

400.1 mm

Front Side Back

Specifications subject to change without notice.

1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: [phone]

MD Series Spec Sheet 04/06/06

qscaudio.com