MiPRO ACT-545 Quad Channel True Diversity Wireless Microphone System


Mipro ACT 545 Wireless receiver


  • EIA standard metal chassis,  a newly designed LCD, rotary control knob and buttons on the control panel with similar operation and display modes of ACT-800 Digital Series.
  • LCD screen automatically shifts colors to identify “Working” and “Standby” mode.
  • Most reliable 24 MHz narrowband true diversity receiving circuit equivalent to ACT-7 Series.
  • Long-distance and stable reception without signal dropout, greatly decreases intermodulation distortion and increases interference-free compatible channels.
  • Industry’s first “PiloTone & NoiseLock” circuits and the RF interference warning indicator for proper adjustments of the SQ level to avoid interference.
  • MIPRO Auto Scan and ACT™ function provides the transmitter’s frequency with precise and rapid sync to the receiver.
  • 7 preset groups with a total of 80 pre-saved frequencies.
  • User-defined group allows users to choose and save up to 16 channels from 961 available frequencies.
  • Output level is pre-adjusted to equal the microphone capsule’s sensitivity.
  • Switchable output levels for best sound quality options, free from distortion.


Channel  Quad
Chassis  1U EIA Standard metal chassis
Frequency Range UHF 480 ~ 934 MHz (country dependent)
Bandwidth 24 MHz
Receiving Mode True diversity receiving
Sensitivity 6 dBμV at S/N > 80 dB
Frequency Response 50 Hz ~ 18 kHz
Dynamic Range > 111 dBA
Audio Output Balanced: +16dB / 0dB / -6dB, Unbalanced: +10dB / 0dB / -6dB
Antenna Detachable. 50K TNC female connector provides bias for the MIPRO antenna systems.
Power Supply External 100~240V AC switching power supply
Dimensions (W × H × D) 420 × 44 × 219 mm (W×H×D)
Weight Approx. 2.4 kg
Note Refer to actual product in the event of product discrepancy.
Frequency range  and maximum deviation comply with the regulations of different countries.

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