AKG RMU4X PRO Rack Mount Kit for WMS420 WMS450 WMS470 Receivers

AKG RMU4X PRO: A Rack Kit That Brings the Antennas With It

The AKG RMU4X PRO is a professional rack mount kit for mounting a wireless receiver into a standard 19 in rack, supplied complete with front mount cables and antenna splitter cables. RMU denotes a rack mount unit in AKG's naming, and this member of the family is explicitly a kit rather than a finished unit, because the receiver is bought separately and the kit changes only how that receiver is installed and cabled. Compatibility covers the WMS420, WMS450 and WMS470 receivers, one receiver per kit, with two kits combining to mount a pair side by side in a single rack unit of height. Including the antenna cabling is what distinguishes it from plain brackets, since the awkward part of racking a receiver is almost never the metalwork. It is the kit an integrator reaches for when the antennas have to end up somewhere other than the back of the rack.

Front Mount Antenna Cables and the Problem They Solve

Antenna connections on these receivers live on the rear panel, and the front mount cables in this kit move them to the front, which is one of the most consequential decisions in any rack build. Rear-mounted antennas sit inside the rack behind a metal frame, surrounded by amplifiers, power supplies and cable looms, which is close to the worst radio environment a designer could choose; bringing the connections forward lets the antennas stand clear of the rack in open air, or lets short coaxial cables run out to remote antennas placed where the performers actually are. A rack in a cupboard with rear antennas will drop out where the same rack with front antennas holds a solid link, and no amount of gain later in the chain recovers signal the rack itself absorbed. Installers who have chased dropouts in a closed equipment cabinet tend to specify front-mount cabling on every job afterwards.

Splitter Cables, Two Receivers and One Antenna Pair

Also supplied are antenna splitter cables, which allow a pair of receivers to share a single antenna pair rather than each carrying its own aerials. Sharing matters because antennas in close proximity interfere with one another and consume front-panel space that a rack does not have: two receivers with four whip antennas produce a thicket of aerials competing for the same signal, whereas two receivers fed from one well-placed pair behave predictably and free up the panel. That is also why the kit's capacity is expressed as one receiver each with two kits filling 1U, since a side-by-side pair in a single rack unit is the configuration the splitter cabling is designed around. Houses of worship, conference venues and rental inventories build receiver pairs this way as a standard block, then repeat the block as the channel count grows.

Which Receivers It Fits, and What Is Not in the Box

Fitment is stated by AKG as the WMS420, WMS450 and WMS470 receivers, spanning three generations of its analog UHF platforms, and one kit handles one receiver. The receiver itself is not included, which is the defining property of a kit rather than a unit, and neither are antennas, since the cabling provided brings existing antenna connections forward or splits them rather than replacing the antennas themselves. AKG publishes no bracket material, screw complement or cable length for the kit, so none of those figures is stated here; the 1U figure for a side-by-side pair is consistent across both the manufacturer's two-kits statement and independent tier-1 retail documentation. Anyone planning a rack elevation should confirm the receiver model first, then order one kit per receiver, which is the arithmetic that trips up buyers expecting a single kit to handle a pair.