5-zone MP3 volume independently adjustable amplifier FT-B2850MF

This amplifier provides 360W output with five independently adjustable zones, Bluetooth 5.0, and supports lossless music playback via USB. It includes FM radio, automatic mute features, and robust protection against short circuits and overheating. Designed for medium to small public places, it offers comprehensive control over volume, bass, and treble.
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Description
  • High-grade aluminum 2U black brushed panel, beautiful and elegant
  • The internal PCB adopts double-sided SMT patch circuit, and the performance is more stable and reliable
  • Five-way signal input (three-way microphone, two-way line.
  • Built-in five-zone output, each zone power can be adjusted independently
  • Built-in Bluetooth 5.0 wireless audio reception, the receiving distance can reach 10 meters in an open space
  • Built-in USB flash drive socket, support lossless music format, automatic playback function when powered on
  • Built-in FM radio function, can automatically store channels
  • Five-digit fluorescent display, full-function touch button
  • Equipped with 100V, 70V constant voltage output and 4~16Ω constant resistance output
  • Total volume adjustment function, each input channel volume is adjusted independently
  • Treble and bass are adjusted independently
  • MIC1 automatic mute is equipped with an adjustment switch, the adjustable range is:0 to -30dB
  • Five-unit LED level display, dynamic and clear
  • With perfect output short circuit protection and over-temperature protection functions
  • Built-in signal mute circuit to better reduce output noise
  • With one auxiliary audio output interface, it is convenient to connect to the next amplifier
  • The output adopts industrial fence-type terminal block, which is more reliable
  • The cooling fan temperature control starts
  • Very suitable for broadcasting in medium and small public places
Parameter
Rated output power500W
Output mode4-16 ohms(Ω) fixed resistance output 70V(14 ohms(Ω)) 100V(20ohms(Ω)) constant voltage output
Microphone inputMIC1/MIC2/MIC3:600 ohms(Ω) 10-15 mV, unbalanced
Line inputAUX1/AUX2:10k ohms(Ω) 200-470 mV, unbalanced
Auxiliary output0.775V (0 dB)
Zone control5 zone control output (100V)
Frequency response60 Hz~ 15k Hz (± 3 dB)
Nonlinear distortion THD<0.5% at 1kHz, 1/3 rated output power
Signal-to-noise ratio S/NLine:85 dB, MIC:> 72 dB
Tone adjustment rangeBASS:100 Hz (± 10 dB), TREBLE:12k Hz (± 10 dB)
Silent suppression capabilityWhen MIC1 is input, MIC2, MIC3, AUX1, AUX2 signals are attenuated by 0~30 dB
Output adjustment rate< 3 dB, from no signal static working state to full load working state
Function controlfive volume adjustments, one high and low frequency adjustment, one silent adjustment, and one power switch
Cooling methodDC 12V FAN forced air cooling method
Indicator lightPower:‘POWER’, level display:‘2, 4, 6, 8, 10’
ProtectionAC FUSE×8A AC FUSE×1, load short circuit, over temperature
Power cord(3×0.75 mm2)×1.5M (standard)
Power supplyAC 220V ± 10% 50-60Hz
Power consumption675W
Machine size89(H)×483(W)×366(D)mm
Net weight15.58kg
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FT-B2850MF
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