Mipro ACT-525

A Solid Base for ACT-500 Series RF Configurations

Designed in an EIA rack format with a metal chassis, this receiver fits into a system logic: it is intended to be paired with compatible transmitters and accessories from the ACT-500 series and to scale from a "simple" use (a single receiver in a rack) to denser configurations. Its UHF PLL-synthesized architecture aims for RF stability and flexibility, with frequency selection and automation features that facilitate preparation for a stage, theater, or corporate event.

Who Is This UHF Receiver For?

This model is particularly suited for live performances (bands, DJs, TV sets, conferences), equipped venues (halls, auditoriums, places of worship), and service providers who need reliable reception and time-saving setup. True diversity, fine squelch (SQ) management, and the autoscanner help secure the link when the radio environment becomes challenging. Finally, the balanced audio connectivity and optional network expansion (Dante) make it a relevant receiver for more "installation" or broadcast audio chains.

Key Features: RF Stability, Control, and Readability in Real Conditions

True Diversity Reception and Interference Rejection

The true diversity reception mode uses two reception paths to optimize signal stability. Additionally, the dual "PiloTone & NoiseLock" circuits are designed to minimize unwanted interference and contribute to cleaner audio reproduction, especially when multiple RF systems coexist.

Frequency Management: Autoscanner, Memories, and Agility

The UHF PLL synthesis technology targets better RF stability, reduced spurious emissions, and greater frequency agility. The one-touch autoscanner quickly searches for a clear, interference-free channel. On the management side, the receiver offers 80 predefined unconditional channels plus 8 user-defined channels that can be saved and recalled, convenient for standardizing frequency plans by venue or tour.

Squelch Adjustment: Adapting Range or Robustness

The adjustable SQ allows increasing sensitivity to gain reception distance or decreasing it to limit the acceptance of unwanted signals. When the interference indicator lights up, adjusting the SQ helps find a consistent compromise between range and immunity to interference depending on the stage, venue, and RF density.

Audio and Output Levels: Console / Broadcast Integration

The rear panel includes the balanced XLR output, the unbalanced 6.35mm Jack output, and a level switch. This approach facilitates adaptation to the input level of a console, processor, or interface, minimizing the risk of saturation or too weak a signal depending on the audio chain.

Control, Monitoring, and Network Expansion

For management, the USB interface simplifies connection to a computer. The MIPRO ACT-BUS allows remote control of up to 64 channels, a major advantage for multi-receiver racks. An optional Dante network interface is also announced, designed for environments where audio over IP and network distribution are prioritized.

Clear Display and Setting Security

The backlit LCD screen displays the group, channel, frequency, RF and audio power, antenna A/B, transmitter battery status, interference warning indicator, and panel lock. A visual cue easily differentiates operating mode (green) and standby mode (red) during performance to avoid handling errors under stress.

Technical specifications

Dimensions	420 x 44 x 219 mm (W x H x D)	Frequency response	50 Hz to 18 kHz
Weight	approximately 2.0 kg	Dynamic range	> 111 dBA
Frequency range	UHF	Balanced audio output	+16 dB / 0 dB / -6 dB
Bandwidth	24 MHz	Unbalanced audio output	+10 dB / 0 dB / -6 dB
Reception mode	true diversity	Display	backlit LCD (group, channel, frequency, RF and audio power, antenna A/B, transmitter battery, interference warning, panel lock)
Sensitivity	6 dBuV @ S/N > 80 dB	Status indication	operating mode (green) and standby mode (red)
RF technology	UHF PLL-synthesized (RF stability, reduced spurious emissions, frequency agility)	Rear outputs	balanced XLR, unbalanced 6.35mm Jack
Autoscanner	one-touch (search for a clear channel)	Switch	output level (rear panel)
Channels	80 predefined unconditional channels + 8 user-defined channels (save and recall)	DC power input	rear panel
Interference rejection circuits	"PiloTone & NoiseLock"	PC interface	USB
Compatibility	FSA	Remote control	MIPRO ACT-BUS (up to 64 channels)
Squelch adjustment	adjustable (higher sensitivity to increase range or lower to reduce interference)	Audio network	Dante interface (optional)
Antenna	detachable	Power supply	external switching 100 to 240 V AC
Antenna connector	50-ohm female TNC (provides bias for MIPRO antenna systems)	Compatible with	ACT-500H / ACT-500T / BC-T(UHF) / MT-92A