QSC MP-A20V 2-Ch FlexAmp Contractor Power Amplifier 70V / 100V / 8 Ohm / 4 Ohm 200 WPC he MP-A Series music and paging amplifier family builds on a 50 year legacy of QSC amplifier dependability and quality while offering an incredible amount of flexibility for business music and paging applications.
FlexAmp Technology simplifies system design by allowing a single high channel count amplifier to meet the needs of systems that would typically utilize multiple amplifiers of different power levels. It achieves this by allowing the installer to configure each pair of channels (e.g. ch 1-2, or 3-4, etc.) to deliver up to 400W combined output power, in any mix. This makes for an amazing amount of flexibility, especially when paired with the output mode switch that offers settings for 4 ohms, 8 ohms, 70V and 100V.
Additional capabilities of the MP-A series include an 80 Hz highpass filter available on each output, as well as a remote input for putting the amplifier into standby mode for fire safety systems and an amplifier status signal on the remote output for system verification.
For an example of versatility of the MP-A Series, imagine the MP-A40V in a typical restaurant scenario. Output A of the amplifier is set up for a 20W 70V load for a pair of ceiling loudspeakers in the bathrooms while output B is set up in 4 ohms mode for driving one or two Lo-Z subwoofers with up to 38W. Output C is set up with the highpass filter engaged for driving 250W into 70V ceiling loudspeakers in the main dining room, while output D is driving 150 W into 8 ohms surface- mount loudspeakers on the patio.
MP-A Series amplifiers are extremely efficient with class-D output circuitry and switchmode power supplies. In addition, all models offer seamless Standby mode when not in use for 28 minutes and auto-ramp circuitry that ensures quiet and fast power up from Standby when signal is present. This combination of output topology and energy saving circuitry make for extreme efficiency and low operational costs. The 1RU chassis means that the MP-A Series amplifiers are perfect for installations with rack space restrictions.
Specifications:
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Channels: 2
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Output power (both channels driven): 8 ohms: 200WPC, 4 ohms: 200WPC, 70/100V: 200 WPC
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SNR: 100 dB
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Distortion:<0.01%
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Input sensitivity at 8ohms: 1.23V (+4 dBu)
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Output circuitry: Class D
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Frequency response: 20 – 20,000 Hz
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Damping factor: 100
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Input impedance:10 kohms balanced, unbalanced
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Max input level: 12.3V (+24 dB)
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Input connectors:2 x 3.5 mm 3-pin Euro-style
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Output connectors: 1 x 5.0mm 4-pin Euro-style
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Certifications: UL, CE, RoHS/WEEE compliant, FCC Class B (conducted and radiated emissions)
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Power requirements: 100-240 VAC, 50-60 Hz
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Weight: 7.7 lbs.
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Dimensions: 1.75" H × 19" W × 14.8" D
Constant Voltage (70-Volt) Audio Systems
Audio distribution systems, especially those commonly used in department stores, warehouses, restaurants, etc., require that many loudspeakers be driven from a single audio amplifier over long runs of speaker wire. The "constant voltage" or "high impedance distribution" audio systems can be complex to understand at first, however, provides many advantages. Learn how to design your own 70-volt or 25-volt loudspeaker system.
