Integrated amplifier FT-B2807P

This is a 70W power amplifier with multiple signal inputs (three microphones, two lines) and outputs (100V, 70V constant voltage, and 4-16Ω constant resistance). It features independent volume and tone adjustments, automatic mute for MIC1, and built-in protection for short circuits and over-temperature. The device also has a temperature-controlled cooling fan and a stable, reliable PCB design.
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Description
  • High-grade aluminum 2U black oxidized brushed panel, beautiful and elegant
  • The internal PCB is all double-sided SMT patch circuit, the performance is more stable and reliable
  • Five-way signal input (three microphones, two lines.
  • 100V, 70V constant voltage output and 4~16Ω constant resistance output are set
  • 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
  • It has perfect output short circuit protection and over-temperature protection functions
  • Cooling fan temperature control start
  • Rated output power:70W
Parameter
Output mode 4-16 ohms(Ω) constant resistance output 70V(70 ohms(Ω)) 100V(143 ohms(Ω)) constant voltage output
Microphone input MIC1/MIC2/MIC3:600 ohms (Ω) 10-15 mV, unbalanced
Line input AUX1/AUX2:10k ohms (Ω) 200-470 mV, unbalanced
Auxiliary output 0.775V (0 dB)
Frequency response 60 Hz~ 15k Hz (± 3 dB)
Non-linear distortion THD <0.5% at 1kHz, 1/3 rated output power
Signal-to-noise ratio S/N Line:85 dB, MIC:> 72 dB
Tone adjustment range BASS:100 Hz (± 10 dB), TREBLE:12k Hz (± 10 dB)
Silent suppression capability When MIC1 is input, MIC2, MIC3, AUX1, AUX2 signals are attenuated by 0~30 dB
Output regulation rate < 3 dB, from no signal static working state to full load working state
Function control five volume adjustments, one high and low frequency adjustment, one mute adjustment, one power switch
Cooling method DC 12V FAN forced air cooling
Indicator light power:‘POWER’, level display:‘2, 4, 6, 8, 10’
Protection AC FUSE×4A AC FUSE×1, load short circuit, over temperature
Power cord (3×0.75 mm2)×1.5M (standard)
Power supply AC 220V ± 10% 50-60Hz
Power consumption 95W
Machine size 89(H)×483(W)×366(D)mm
Net weight 10.04kg
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FT-B2807P
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