RF Venue COMBINE4 Splitter per antenna

4-Channel Active IEM Transmitter Combiner for Cleaner Wireless Performance

The RF Venue COMBINE4 is an active in-ear monitor transmitter combiner that merges the RF output of up to four IEM transmitters into a single transmit antenna. It replaces the tangle of whip antennas that sprout from the back of a monitor rack, delivering fewer dropouts and lower intermodulation distortion between adjacent carriers.

What Sets the COMBINE4 Apart

Unlike passive splitters, the COMBINE4 actively amplifies and conditions each transmitter's signal before recombining them, preserving transmit power and range. It also redistributes DC power back to all four connected transmitters, and a broadband RF design covers the full 470–960 MHz UHF spectrum for compatibility with every major manufacturer's wireless IEM system.

RF Performance and Signal Handling

Active circuitry keeps intermodulation products between adjacent IEM carriers to a minimum — the main cause of dropouts in multichannel IEM setups.

• Number of Channels: 4 — supports up to four IEM transmitters in one unit
• Frequency Band: 470–960 MHz — full UHF spectrum coverage for global wireless IEM use
• System: UHF — compatible with all professional UHF wireless IEM systems
• Type: Active Antenna Combiner — amplifies and conditions signals rather than passively mixing them

Power Distribution and Rack Integration

A single AC input feeds the whole assembly, with DC power redistributed to all four connected transmitters through the bundled DC jumpers — removing wall-wart clutter from the rack.

• Power Consumption: 60 W
• Rackmountable: Yes (1RU full rack width) — installs in standard 19-inch equipment racks
• DC Distribution: 4 DC jumpers included — powers each transmitter from the combiner

Connectivity and Included Accessories

Everything needed to wire up a four-channel IEM rig ships in the box.

• Package Content: BNC Cable, DC Cable, Power Cord — full cabling kit included for immediate deployment
• Antenna Output: BNC — connects a single transmit antenna
• Switch: Yes — power switch for the entire combiner
• Adapter Included: No — antenna sold separately to match venue and frequency plan