Lectrosonics M2Ra IEM/IFB Stereo Receiver

The Lectrosonics M2Ra stereo IEM/IFB receiver, a compact digital beltpack, gives performers and crew a detailed wireless monitor feed.

It succeeds the M2R with a stronger front end (an IP3 of +15 dBu) and protection against 48 V phantom power on the headphone jack. One firmware runs it encrypted or unencrypted, and it adds an IFB compatibility mode and D2 and HDM modes for mono digital transmitters. This A1B1 version covers 470.100 to 607.950 MHz in North America.

Monitoring

A 250 mW stereo amplifier drives headphones or earphones down to 10 ohms, loud enough for the stage. It plays stereo, mono from the left or right channel, or mono from both, so it serves as an IEM, an IFB, or a camera-hop receiver. Antenna diversity switches during the digital packet headers for seamless audio, and latency is 1.0 ms from a digital source.

Setup and Build

Two-way IR sync exchanges data with the DCHT and M2T transmitters. With the M2T, the M2Ra joins the Duet system, which Wireless Designer software manages for frequency planning. FlexList mode stores names with their frequencies, so a monitor engineer can find any performer’s mix quickly. The machined aluminum housing has a black hard-anodized finish with laser-etched markings, a high-resolution color LCD, and membrane switches.

Power and Care

Two lithium AA batteries run it for 7 hours. Sweat and other moisture damage the receiver; the optional M2RCVR silicone sleeve protects it on the body.

Features

• Stereo digital IEM and IFB receiver
• IP3 of +15 dBu for tough RF
• 48 V phantom protection on the headphone jack
• AES 256-CTR encryption, or unencrypted, in one firmware
• IFB, D2, and HDM compatibility modes
• 250 mW headphone amplifier, down to 10 ohms
• Stereo or mono from either or both channels
• Two-way IR sync and Wireless Designer support
• High-resolution color LCD
• 7 hours on two lithium AA batteries