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Analog Snake

Radial Catapult TX4

The Radial Catapult TX4 is the transmit end of Radial's modular Cat5 snake system, collecting four XLR feeds onto a single shielded Cat5 run in a rugged floor-box format. Both male and female XLRs on each channel mean it works for sends or returns, and the thru connectors can split a feed to a monitor console at the same time. Pair it with an RX4 or Catapult Rack RX and you have a four-channel analog snake over cable you can buy anywhere.

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Photos

Manufacturer product photography showing the hardware, controls, and physical form.

Photo: Radial Engineering1 / 2
Signal channels
8Balanced analog paths end to end
Cable runs
18 channels per Cat cable
Rack space
Outside rackPlan a shelf, tray, or stage position
Power draw
UnverifiedPower requirement is not verified in the catalog
Catalog estimate
~$235Current listings stay in the price tracker

01 · What it does—and what that changes in your rig.

Product overview

Start with the payoff, then work through how it functions, where it fits, and the details that change a real build.

The payoff

8 channels. 1 cable runs. Outside rack.

The Catapult TX4 is the send end of Radial's passive Cat5 snake system — its one job is to collect four balanced XLR signals and put them down a single Cat5 cable to an RX4 or Catapult rack receiver on the other end. No power, no conversion, no latency, just a clever passive multiplexing scheme inside a rugged steel chassis. In a monitor world where stage real estate is tight and running four separate XLR lines across a stage is a mess nobody wants to deal with, consolidating to a single Cat5 is genuinely useful. This is the floor-box half of that solution.

Signal channels
8Balanced analog paths end to end
Cable runs
18 channels per Cat cable
Rack space
Outside rackPlan a shelf, tray, or stage position
Radial Catapult 4-channel Cat 5 snake module — angled view
Photo: Radial EngineeringOutside rack · Unverified
Function

How it works in the path

The thru connectors are the detail worth understanding at load-in. Each channel has both a female XLR input and a male XLR thru, which means the TX4 can sit between a source and a local destination simultaneously — feed it from a splitter, pass one output to a floor wedge amp or local IEM transmitter, and send the other down the Cat5 run to the rack. That saves a splitter on channels where you only need two destinations. The passive design also means any standard Cat5 or Cat6 cable works, which matters on a festival where you're borrowing cable from a stranger's trunk.

Best fit

Where it earns its place in the system

This belongs in your rig if you're running a compact IEM or monitor setup and want to minimize the cable run to the rack without committing to a full digital snake ecosystem. It's a smart, affordable answer for four-piece bands, small theater, or fly dates where packing light matters. It is not the right call if you need more than four channels — you'd stack TX4 units, which gets awkward — or if your infrastructure already has a proper analog or digital multicore sorted. And if you're working rooms where cable runs regularly exceed 100 meters, verify your specific Cat5 cable quality before counting on clean audio.

In the rack

Details worth deciding before load-in.

  • Label the Cat5 output end of the cable at both ends with channel assignment before the gig — when your RX4 is buried in the rack and your TX4 is under a keyboard stand, you will not remember which pair is which under pressure.
  • Use the XLR thru outputs to feed local IEM transmitters on stage, keeping the Cat5 run carrying clean splits to the rack without needing a separate passive splitter box for those channels.
  • Carry a short stock of standard Cat5e patch cables in your kit — the TX4's value is that any IT cable works, so a busted run is a hardware-store fix, not a gear emergency.
  • The TX4 is floor-box format rather than rack-mount despite the catalog noting rackmountability — plan its physical placement at stage level near the inputs, not inside the rack itself, and secure it with gaff so it doesn't travel during the set.

02 · Know the whole path before you buy.

Signal path

Learn the route as a block diagram: source, product function, transport, and destination. Select any block to see what enters, what changes, and what leaves.

Interactive block diagramAuto-looping · hover, focus, or tap to hold a stage
Port-type signalProduct functionSystem boundary
Follow one signal from source to destination

Each block answers the same three questions: what arrives, what changes here, and what leaves.

01 · Source handoff · selected
01 · Source handoff

Console, split, or playback outputs

4 balanced analog channels enter as separate lines before any cable grouping happens.

Arrives as
4 analog channels
Connector
XLR female
Direction
Into this product

03 · What this product asks of the rest of the system.

Compatibility

Treat connector names as the start of the check—not the answer. These are the boundaries that determine a complete working path.

Best fit · Analog Snake

Use it as analog snake tracked outside rack rails; follow the manufacturer’s mounting and form-factor guidance.

Plan the companion path

Complete both ends with a compatible sender, receiver, or breakout. Match connector, channel wiring, direction, and shielded-cable requirements.

Connector boundary

Documented connectors: XLR female, XLR male, RJ45. Match connector, direction, and signal type—not shape alone.

04 · Every connector, grouped by job.

I/O ports

Switch the product view and the documented port inventory updates with it—hardware and data stay side by side.

Every connector, grouped by job.

Switch panels to keep the hardware view and the documented port list in sync.

Front panel
front connector map for Radial Catapult TX4EXTERNAL UNIT · FRONTNo documented front ports
Rear panel
rear connector map for Radial Catapult TX4EXTERNAL UNIT · REARXLR femaleinputXLR femaleinputXLR femaleinputXLR femaleinputXLR maleoutputXLR maleoutputXLR maleoutputXLR maleoutputRJ45output
All documented ports for Radial Catapult TX4
PortPanelConnectorDirectionSignalChannels
XLR In 1rearXLR female inputanalog audio—
XLR In 2rearXLR female inputanalog audio—
XLR In 3rearXLR female inputanalog audio—
XLR In 4rearXLR female inputanalog audio—
XLR Thru 1rearXLR male outputanalog audio—
XLR Thru 2rearXLR male outputanalog audio—
XLR Thru 3rearXLR male outputanalog audio—
XLR Thru 4rearXLR male outputanalog audio—
Cat5 OutrearRJ45 outputanalog audio—

Showing 9 of 9 documented physical ports.

05 · Compare the decision, not just the price.

Alternatives

The rows are organized around fit, power, I/O, and system role so a cheaper unit cannot hide a more expensive workflow.

Compare
Radial Catapult TX4 and RX4 — 4-channel Cat 5 audio snake pair
Radial Catapult Mini RX — unit with 4-channel male XLR breakout fan
Radial Catapult Mini TRS
Radial Catapult Mini TX — unit with 4-channel XLR breakout fan
Fit📐 Outside rack📐 Outside rack📐 Outside rack📐 Outside rack
Power⚡ Unverified⚡ Unverified⚡ Unverified⚡ Unverified
Weight⚖️ 3.5 lb⚖️ 2.2 lb⚖️ 2.2 lb⚖️ 2.2 lb
I/O🔌 9🔌 5🔌 5🔌 5
Estimate💵 ~$235💵 ~$125💵 ~$125💵 ~$125
Deep diveCurrent selectionFull comparison →Full comparison →Full comparison →

06 · Resolve the questions that can change the purchase or build plan.

Planning questions

Short, source-backed answers surface rack fit, power, cabling, and connection details before they become surprises.

Where does the Radial Catapult TX4 live in a complete rig?

The catalog assigns it no rack units. Builder tracks it as non-rack gear; follow the manufacturer’s mounting, case, and form-factor guidance.

How much power does the Radial Catapult TX4 draw?

Its power requirement is not yet verified in the catalog.

What connections does the Radial Catapult TX4 have?

9 documented physical ports, including XLR In 1, XLR In 2, XLR In 3, XLR In 4, XLR Thru 1, XLR Thru 2.

07 · See this gear inside a complete system plan.

Builder preview

Builder keeps non-rack gear in the same bill of materials, budget, dependency, and connection plan as the rack-mounted system around it.Open in Builder
Catapult TX4 tracked in a complete system planA simplified plan shows the gear tracked outside rack rails, with its documented connection path continuing to a planned destination.Tracked outside rack railsRadialCatapult TX4CONNECTED GEARnext signal destinationExternal system gear · no rack units assigned

08 · Related gear, in the order you may need it.

Planning guides for analog snake systems.