QSC MD-FP122/66 User manual

The MD (ModularDesign) Series Powered
Loudspeakers combine the superb loudspeaker
performance of MD with the latest generation
of QSC’s legendary amplification and signal
processing technologies. For more detail about
the PM modules, see the rear page.
MD Powered 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 Powered is appropriate
anywhere there is a need for dependable high
performance loudspeakers with predictable
coverage, extended frequency response and the
precision of integrated power amplification and
signal processing. For design/build contractors
and electroacoustic design consultants, the MD
Powered 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 self-powered MD
family includes six models: five models with
12" LF sections, and five with 15" LF sections.
Nominal coverage patterns of 60˚ x 40°, 60˚ x 60°
90° x 40°, 90˚ x 60° and 120° x 40° are available
with either low-frequency complement. In
addition, two low-frequency only MD Powered
systems, the MD-LP115 and MD-LP118, share
the common form factor of the full-range
systems. All share the same 35" tall, 30°
trapezoidal enclosure as their passive MD
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. 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.
Features of the MD Powered Series
• PM1000PowerModuleofferstate-of-the-artintegrationof
 amplificationandsignalprocessinginanextremelycompact,
 lightweightpackage
• 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(handleson
 blackonly)
• 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
MD Powered Series
ModularDesign™ Loudspeakers
MD-FP122/64r | MD-FP122/66 | MD-FP122/94r | MD-FP122/96r | MD-FP122/124r
MD-FP152/64r | MD-FP152/66 | MD-FP152/94r | MD-FP152/96r | MD-FP152/124r
Features of the Patented* PM1000 Power Module
• PM1000provides1000wattsofcontinuouspower,800wattsto
 theLFtransducerand200WtotheHFcompressiondriver
• ClassDswitchingtechnology
• 120Vand230Vmodelsavailable
• AcceptsbalancedXLRinputconnectorwith   
 pass-throughconnector
• Integratedactivecrossover&equalizationelectronics
• Internallimiterspreventoverdrivingthesystem

Specifications subject to change without notice.
MD Powered Series
MD-FP122/64r MD-FP122/66 MD-FP122/94r MD-FP122/96r MD-FP122/124r
Configuration 12" 2-way full-range loudspeaker
Transducers
Low-frequency
High-frequency
12" transducer with 4"
voice coil, ferrite magnet
60° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
12" transducer with 4"
voice coil, ferrite magnet
60° x 60° horn with 1.4"
exit dia., 2.5" voice coil,
neodymium magnet
12" transducer with 4"
voice coil, ferrite magnet
90° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
12" transducer with 4"
voice coil, ferrite magnet
90° x 60° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
12" transducer with 4"
voice coil, ferrite magnet
120° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
Frequency Response (±3dB)155 Hz - 17.5 kHz 55 Hz - 17.5 kHz 55 Hz - 19.5 kHz 55 Hz - 16.5 kHz 55 Hz - 19 kHz
Frequency Range (-10 dB)150 Hz - 18 kHz 50 Hz - 19.5 kHz 50 Hz - 20 kHz 50 Hz - 19.5 kHz 50 Hz - 20 kHz
Maximum Output
Continuous 2
Peak 3
129 dB
139 dB
127 dB
137 dB
128 dB
138 dB
125 dB
135 dB
126 dB
137 dB
Nominal Coverage (-6 dB)460° x 40° rotatable 60° x 60° 90° x 40° rotatable 90° x 60° rotatable 120° x 40° rotatable
Amplifier Module
Power Output 5LF: 800 W / HF: 200 W
Input Sensitivity 1.2 Vrms (+4 dBu)
Input Clipping 7.5 Vrms (+19.5 dBu)
Input Impedance 20k ohms
Input Connector Balanced XLR female (Pin 1: Earth, Pin 2: +, Pin 3: -)
Output (loop-thru) Connector XLR male wired in parallel with input
AC Power Connector Neutrik®Powercon (10' (3 m) #18 AWG 120V North American cordset)
Controls Gain control, 100 Hz high-pass filter, Power on/off
Indicators Clip/Limit (red LED) / Signal (green LED) / AC Power (blue LED)
Protection Thermal limiting, on/off muting, AC inrush current limiting
Operating Voltages Available in 120V or 230V versions (+15% -40%)
AC Power Requirements 6
Pink Noise
(6 dB crest factor)
Typical Program Material
at Full Power
Idle < 0.5 A (< 100 BTU waste heat) / 1/8 power 2.5 A (570 BTU waste heat) / 1/3 power 5.0 A (1380 BTU waste heat)
Full Power 15.0 A (4010 BTU waste heat)
2.5 A (570 BTU waste heat)
Enclosure
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 18" (889 mm x 521 mm x 457 mm)
Weight 88 lbs (40 kg)
All amplifiers are FCC class B (conducted and radiated emissions), UL/CE listed
1) Free Field Response (4pi)
2) Calculated based on sensitivity and continuous amplifier power at onset of limiting
3) Calculated based on sensitivity of transducers and peak output capability of amplifier
4) Coverage: Included angle between -6 dB points, 500 to 3.2k Hz, taken at ISO preferred one-third octave intervals, or for an otherwise specified frequency range
5) Amplifier Power: The maximum sustained power at less than 1% clipping, averaged over the intended frequency range
6) Current values are for 120V, for 230V operation divide by 2
12" Loudspeaker Specifications

15" Loudspeaker Specifications
Specifications subject to change without notice.
MD-FP152/64r MD-FP152/66 MD-FP152/94r MD-FP152/96r MD-FP152/124r
Configuration 15" 2-way full-range loudspeaker
Transducers
Low-frequency
High-frequency
15" transducer with 4"
voice coil, ferrite magnet
60° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
15" transducer with 4"
voice coil, ferrite magnet
60° x 60° horn with 1.4"
exit dia., 2.5" voice coil,
neodymium magnet
15" transducer with 4"
voice coil, ferrite magnet
90° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
15" transducer with 4"
voice coil, ferrite magnet
90° x 60° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
15" transducer with 4"
voice coil, ferrite magnet
120° x 40° rotatable horn
with 1.4" exit dia., 2.5"
voice coil, neodymium
magnet
Frequency Response (±3dB)150 Hz - 17.5 kHz 50 Hz - 19.5 kHz 50 Hz - 19.5 kHz 50 Hz - 19 kHz 50 Hz - 19 kHz
Frequency Range (-10 dB)145 Hz - 18 kHz 45 Hz - 20 kHz 45 Hz - 20 kHz 45 Hz - 20 kHz 45 Hz - 20 kHz
Maximum Output
Continuous 2
Peak 3
129 dB
139 dB
127 dB
138 dB
128 dB
138 dB
126 dB
136 dB
127 dB
137 dB
Nominal Coverage (-6 dB)460° x 40° rotatable 60° x 60° 90° x 40° rotatable 90° x 60° rotatable 120° x 40° rotatable
Amplifier Module
Power Output 5LF: 800 W / HF: 200 W
Input Sensitivity 1.2 Vrms (+4 dBu)
Input Clipping 7.5 Vrms (+19.5 dBu)
Input Impedance 20k ohms
Input Connector Balanced XLR female (Pin 1: Earth, Pin 2: +, Pin 3: -)
Output (loop-thru) Connector XLR male wired in parallel with input
AC Power Connector Neutrik®Powercon (10' (3 m) #18 AWG 120V North American cordset)
Controls Gain control, 100 Hz high-pass filter, Power on/off
Indicators Clip/Limit (red LED) / Signal (green LED) / AC Power (blue LED)
Protection Thermal limiting, on/off muting, AC inrush current limiting
Operating Voltages Available in 120V or 230V versions (+15% -40%)
AC Power Requirements 6
Pink Noise
(6 dB crest factor)
Typical Program Material
at Full Power
Idle < 0.5 A (< 100 BTU waste heat) • 1/8 power 2.5 A (570 BTU waste heat) • 1/3 power 5.0 A (1380 BTU waste heat)
Full Power 15.0 A (4010 BTU waste heat)
2.5 A (570 BTU waste heat)
Enclosure
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 18" (889 mm x 521 mm x 457 mm)
Weight 88 lbs (40 kg)
All amplifiers are FCC class B (conducted and radiated emissions), UL/CE listed
1) Free Field Response (4pi)
2) Calculated based on sensitivity and continuous amplifier power at onset of limiting
3) Calculated based on sensitivity of transducers and peak output capability of amplifier
4) Coverage: Included angle between -6 dB points, 500 to 3.2k Hz, taken at ISO preferred one-third octave intervals, or for an otherwise specified frequency range
5) Amplifier Power: The maximum sustained power at less than 1% clipping, averaged over the intended frequency range
6) Current values are for 120V, for 230V operation divide by 2

MD Powered Series Loudspeakers Dimensions
qscaudio.com
Specifications subject to change without notice.
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: [phone]
MD Powered Spec Sheet 12/04/07
18"
457 mm
35"
889 mm
TopFrontSide Back
20.5"
521 mm
60°
Handles shown included
on black versions only
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 high-end
professional loudspeaker
systems. The PM1000 features
two channels producing 800
watts (LF) and 200 watts
(HF) respectively, while the
PM1400 delivers 1400 watts
into a single channel.
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.
Multi-tier linear technology can extend this to as
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 error-correction keeps audio quality
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 fine-tuned with high order crossover slopes,
signal alignment and LF rolloffs as well as
multiple parametric equalizer sections. The
internal processing also includes long-term
power limiting, allowing higher levels of
amplifier drive to the speaker without damaging
overloads.
The PM modules are built on a solid aluminum,
three-sided extrusion that functions as a chassis,
heat sink and mounting flange. Because of
their high conversion efficiency, PM modules
normally dissipate only about 25 to 50 watts
of input power as heat, and are basically a
passively cooled design. However, in order
to keep the exposed surfaces within required
temperature limits, and prevent thermal
overload in extremely hot environments, a
temperature controlled fan is mounted to the
heat-sink assembly and comes on only when
heat sink temperature reaches 122º F (50 C),
ensuring that “the show goes on” even under
extreme conditions.
PM Power Modules
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.