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MD Powered Series Loudspeakers | Dimensions |
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Side | Front | |
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35"
889 mm
20.5"
521 mm
Back | Top | |
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18"
457 mm
60°
Handles shown included on black versions only
PM Power Modules
QSC’s PM series are the most compact, lightweight and efficient loudspeaker power modules currently available. They have been specifically developed to meet the headroom and voltage swing requirements of
Users familiar with existing powered speaker technology expect to see a large heat sink, taking up most of the speaker’s rear panel. Such products run hot at full power, and may not be capable of sustained high output operation in all positions or climate conditions due to thermal limitations.
The linear amplifier technology utilized in most current powered loudspeaker designs is capable of acceptable audio performance, but inherent inefficiencies limit the maximum power of these systems to the 300 to 500 watt range.
much as 700 watts (as in QSC’s HPR speakers), but still requires a large, heavy heat sink.
Existing amplifier technologies forced compromises upon the loudspeaker designer that QSC engineers found unacceptable. The resulting specification called for an amplifier package measuring no more than 4.4" x 14.6" x 7" (112 mm x 371 mm x 178 mm) and weighing only 8 lbs (3.6 kg) yet capable of continuously delivering double or triple the amount of power traditionally feasible in a package of this size. Our engineers combined the lessons QSC has learned from three generations of PowerLight technology power supplies with a unique, patent pending approach to “Class D” amplification to create the PM series power modules.
Until now available Class D solutions have been constrained by voltage limitations, and thus remained below the 500 watt (at 8 ohms) barrier, and many designs have also suffered from imperfect audio quality. QSC has broken through these barriers, with ratings exceeding 800 watts into standard 8 ohm loads, and 1400 watts into 4 ohms. Peak voltages can reach 120 volts, at up to 30 amps of current (3600 watts of “peak power”). At the same time, advanced internal
pristine across the entire frequency range. QSC has finally opened the door to combining the horsepower potential of Class D with no compromise audio performance.
For the MD powered models, speaker response is
The PM modules are built on a solid aluminum,
Specifications subject to change without notice.
QSC and the QSC logo are registered trademarks of QSC Audio Products Inc. in the U.S. Patent and Trademark office and other countries. ModularDesign is a trademark of QSC Audio Products Inc. All other trademarks are the property of their respective owners. *US Patent #7,279,967. Other patents may apply or be pending.
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: | qscaudio.com |
MD Powered Spec Sheet 12/04/07