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CVR Pro-Audio is a manufacturer specialized in producing line array speaker, pa speaker, subwoofer, stage monitor, power amplifier and speaker management.

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FM-Series

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POWER AMPLIFIER

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1.Power supply design

Each equipment includes independent logic high rate of power supply, which can control electrical circuit to adjust power output and voltage from time to time, and to respond the request of signal and load, so it can get the best power match under the wide range of load, so to ensure the power amplifier will not be overheating.

2.Power output grade

Adopt the balance output circuit, the same as fully symmetrical Bridge Road:compared with the normal single end of land output circuit, the same work voltage can generate the output power in 4 times, that is to say, in order to get the same output power, the work power voltage of power amplifier is much lower thannormal OCL model. The output power tube is with wide safety work area under the condition of low voltage, so it is with higher power and reliability compared with normal OCL output model. Most importantly, The distortion of it is much Lower and can output better tone quality.

3.Sign Voltage Range

There is a limited voltage device within each input channel. By checking the output sign and controlling the input sign, so the power amplifier output will not be at the state of clipping in long time, and can protect the speaker. It can automatically control the input sign when the power amplifier is overheat, so can reduce the heat and keep safety.

4.Perfect protection function

Power amplifier provides various protecting function, such as .direct current protection, internal stoppage protection, input overload protection, filter of radio frequency distraction, output short circuit protection, mismatching load and high frequency overload protection, radiator and over temperature protection for radiator and transformer, over electricity protection. And the over temperature protection for output electricity is achieved by gradually lower the output signal. Only when the temperature keeps rising to the extremity, can it cut off the output electricity supply of this channel, so avoid the stop of play.

5.Heat dissipation system

There is an independent heat dissipation system for each channel, two groups of non-polar speed adjusted Fan. The sealed air go through the radiator to strengthen the effect of heat dissipation, and at the same time, avoid the the dust and smog of stage to pollute the circuit board to ensure the equipment is in good working condition, and the temperature can get balance in some ranges.

Model	FM-460	FM-4100	FM-4130	FM-4160
8ΩStereo Power	4x600W	4x1000W	4x1300W	4x1600W
4ΩStereo Power	4x900W	4x1500W	4x1950W	4x2400W
Input impedance	＞20k/＞10k	＞20k/＞10k	＞20k/＞10k	＞20k/＞10k
Damp factor	400	400	400	400
Frequency response	20Hz-20KHz±0.5dB	20Hz-20KHz±0.5dB	20Hz-20KHz±0.5dB	20Hz-20KHz±0.5dB
THD+N（Rated Power,4ohm/KHz)%	0.05%	0.05%	0.05%	0.05%
Signal Noise Ration(dB)	-105dB	-105dB	-105dB	-105dB
Degree Seperation	-60dB	-60dB	-60dB	-60dB
Input Connectors	XLR	XLR	XLR	XLR
output Connectors	Speakon &touch-proof binding posts		Speakon &touch-proof binding posts
Power Requirement	220V-240V,50Hz-60Hz	220V-240V,50Hz-60Hz	220V-240V,50Hz-60Hz	220V-240V,50Hz-60Hz
Conformation	CNC high reliability steel plate combined with aluminum plate		CNC high reliability steel plate combined with aluminum plate
Dimensions	483x88x396mm	483x88x396mm	483x88x396mm	483x88x396mm
Net Weight	18kg	21kg	22kg	24kg
Gross Weight	20kg	23kg	24kg	26kg

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