RF Venue COMBINE4 Antenna Combiner
RF Venue·Model COMBINE4·rf-venue-combine4
Photos
Manufacturer product photography — the drawn faceplate above stays true to panel layout; these show the hardware itself.
About the RF Venue COMBINE4
RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. Venue's COMBINE4 is a brand-agnostic passive antenna combinerThe transmit-side twin of a distro: merges several IEM transmitters into one antenna without letting them intermodulate. that merges four transmitter outputs into one antenna feed. Its half-rackThe standard slice of rack height: 1U = 1.75″. A 3U box takes three slices; half-rack gear pairs two units side by side in one. form factor saves valuable rack space, and the passive design keeps things simple with no power requirements. A solid choice for smaller IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. rigs where you want to reduce antenna clutter on stage without investing in a full active combiner.
The COMBINE4 handles the transmit-side antenna problem for IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. racks: four transmitters, each wanting to radiate, in a rack where four whip antennasThe stock quarter-wave stick antenna that screws straight onto a receiver — fine for a channel or two in a small room. would intermodulate into a mess of phantomThe +48 V a console sends up the mic cable to power condenser mics and active DI boxes — invisible to gear that doesn’t need it. carriers. It passively combines the four RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. outputs into one feed for a single transmit antenna — no power supply, no active gainHow much the preamp amplifies the incoming signal. Too low and you’re hunting through hiss; too high and peaks clip. stage to fail mid-show, just careful passive combining with the isolation between ports doing the real work of keeping transmitters out of each other's output stages.
Passive is the load-bearing word: with no amplifier making up the combining loss, the unit trades a few dB of output for total reliability and zero added intermodIntermodulation — ghost frequencies created when transmitters mix in each other’s electronics. Why multi-channel wireless is calculated, not guessed. — the correct trade for IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. transmit, where receivers are human-worn and close. Being brand-agnostic, it doesn't care whether the four inputs are Shure, Sennheiser, or a mixed rack, which is exactly the real world of rental inventory.
It pairs naturally with a helicalA directional antenna (paddle, LPDA, helical) aimed at the stage — focuses coverage where the performers are and rejects RF from elsewhere. or LPDA transmit antenna remoted above the stage clutter, and its half-rackThe standard slice of rack height: 1U = 1.75″. A 3U box takes three slices; half-rack gear pairs two units side by side in one. width means the standard RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. row is this plus a DISTRO4 side by side in 1U: transmit combining on one side, receive distribution on the other, one antenna run each way.
In the rack
- Send the combined output to one remoted helicalA directional antenna (paddle, LPDA, helical) aimed at the stage — focuses coverage where the performers are and rejects RF from elsewhere./paddle — height and sightline to the performers matter more than gainHow much the preamp amplifies the incoming signal. Too low and you’re hunting through hiss; too high and peaks clip..
- Passive loss is by design; set transmitter power accordingly rather than reaching for an amplified combinerThe transmit-side twin of a distro: merges several IEM transmitters into one antenna without letting them intermodulate..
- Mount beside a DISTRO4 in one 1UThe standard slice of rack height: 1U = 1.75″. A 3U box takes three slices; half-rack gear pairs two units side by side in one. row for the classic transmit-plus-receive RFRadio Frequency — the wireless part of wireless. RF planning is why big rigs scan, coordinate, and combine antennas instead of hoping. shelf.
4-to-1 passive antenna combinerThe transmit-side twin of a distro: merges several IEM transmitters into one antenna without letting them intermodulate. for IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists./wireless transmitters.
I/O Ports (10)
| Port | Connector | Direction | Signal | Channels |
|---|---|---|---|---|
| Input 1 | BNC | input | antenna | — |
| Input 2 | BNC | input | antenna | — |
| Input 3 | BNC | input | antenna | — |
| Input 4 | BNC | input | antenna | — |
| Combined Out | BNC | output | antenna | — |
- Power (IEC) (IEC C14)
- DC Out 1 (12V) (DC BARREL)
- DC Out 2 (12V) (DC BARREL)
- DC Out 3 (12V) (DC BARREL)
- DC Out 4 (12V) (DC BARREL)
Deciding between two?
Rack space, watts, weight and every connector, side by side.
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When you need a combiner vs a distro, active vs passive, cable choice and length math, and how to scale a 4-pack rig into an 8 or 12-pack without intermod nightmares.
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