Introduction
Congratulations and thank you for your purchase of this professional, powered loudspeaker product. To get the most from your investment, we rec- ommend you review all the information provided in this User Manual.
The Modular Design (or “MD”) self-powered loudspeakers provide excellent sound, power amplification on-board, and a multitude of models with common cabinet design making installation easier. Multiple pick points and minimal weight increase over non-powered versions enable the pow- ered MD series to solve more application challenges than competing designs. Available in black or white, they are the perfect solution for house-of- worship, performing arts center, and arena applications that demand flexible and excellent-sounding system solutions. Handles are provided on black-colored enclosures, while white-colored enclosures omit handles for a cleaner appearance.
All models are self-powered, using highly efficient class-D amplifiers and switch-mode power supplies. AC line connection is fast and easy; a lock- ing, quick-disconnect Neutrik PowerCon® ensures reliable AC mains connection while providing an easy-to-remove power cord for cabinet mobility. Audio is input to the self-powered loudspeaker via an XLR connector with an additional XLR output for daisy-chaining. Features vary by model, so please refer to the specifications for specific model information.
MD-LP shown (MD-SP similar)
1- Filter Switch
2- Gain Adjuster
3- Green Signal and Red Clip Indicator LEDs
4- Input and Output XLR connectors
5- Handles, only on black enclosures
6- Cooling Fan
7- AC Mains Entrance
8- Blue Power ON LED Indicator
9- Serial Number Plate
10- Power Switch (AC Mains Switch)
NOTE! Handles are provided on black-colored enclosures only! White-colored enclosures are not equipped with handles.
Installation
There are fifteen (15) load-rated pick points on the MD-LP enclosure and sixteen (16) on the MD-SP enclosure. As shipped from the factory, each pick point has a strength rated flat head bolt installed. These bolts are load bearing components of the enclosure. Do not remove these bolts except to replace a bolt with a forged-shoulder eye bolt. If a flat head screw is lost, contact QSC’s Technical Services department for a replacement.
Ensure all pick-point fasteners are installed and tightened to 40 in-lb (4.519 N-m) to maintain enclosure’s rated strength. Air leaks resulting from missing hardware will degrade the loudspeaker’s performance.
For eye bolt suspension, use only 3/8-inch, 16 threads per inch forged shoulder eye bolts, QSC part number SR-000096-00. Contact QSC Tech- nical Services department for complete information.
Before placing, installing, rigging, or suspending any speaker product, inspect all hardware, suspension, cabinets, transducers, brackets and associated equipment for damage. Any missing, corroded, deformed, or non-load rated component could significantly reduce the strength of the installation, placement or array. Any such condition severely reduces the safety of the installation and should be immedi- ately corrected. Use only hardware which is rated for the loading conditions of the installation and any possible short-term, unexpected overloading. Never exceed the rating of the hardware or equipment.
Consult a licensed, Professional Engineer regarding physical equipment installation. Adhere to all regulations regarding the safety and operation of flying equipment.