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Everything In Music Since 1958
Everything In Music Since 1958

Radial Catapult TX4 4 Channel Cat 5 Audio Snake - Transmitter

Out of Stock
Original price $275.99
Original price $275.99 - Original price $275.99
Original price $275.99
Current price $229.99
$229.99 - $229.99
Current price $229.99
About Inventory Status

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In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions

Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

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Connect Audio From One Room To Another With Pre-Wired Networks - The Radial Catapult RX4 4 Channel Audio Snake Transmitter

The Radial Catapult is a 4-channel audio snake that lets you send analog or AES digital audio signals over standard Cat 5 or Cat 6 shielded twisted pair cable. This allows stage techs to take advantage of the relatively low cost of this abundantly available cable for return snakes or for transporting balanced audio across a large stage. For the system contractor, the Catapult lets you take advantage of pre-wired networks to connect audio from one room to another.

Six configurations are offered with a choice of three input modules and three output modules. Each input module features four XLR inputs, four XLR thru-puts along with two Neutrik Etherconâ„¢ outputs to connect the Cat 5 cable to the desired output module. These are equipped with RJ45 type Ethercon input and thru-put plus two sets of XLR outputs. These may be ordered without transformers for sub-snakes or to transmit AES audio signals; with mic isolation transformers for signal splitting between FOH, monitors or the recording system, or with line level isolation transformers to eliminate system noise. A ground lift switch is provided at each end for the Ethernet cable connection to help eliminate hum and buzz caused by ground loops.

As with all Radial products, the Catapult is constructed with solid 14-gauge steel to handle the rigors of live touring and is finished in a powder-coat finish to keep your Catapult looking good for years! Inside, a two-sided PCB is used to mount the connectors and transformers doubling up the solder joints for maximum durability.


As with all audio systems, it is good to turn your audio system off or turn system levels down to zero before making connections. This will avoid connection or power-up transients from damaging more sensitive components such as tweeters.


To use the Catapult in the simplest form, connect the TX4 and the RX4 together using Cat 5 or Cat 6 cable. In order to pass 48V phantom power to feed your condenser mics or active direct boxes, the cable must have a shield. If you are transmitting line level signals, the shield is not required due to the twisted pair configuration, but it will still be beneficial as shielded cables are less susceptible to noise. As the twisted pairs are tightly wound together in a compact jacket, it's a good idea to send similar level signals together over the same wire as this will reduce crosstalk from higher signal levels (such as +4dB line levels) polluting lower output signals (such as -30dB mic levels). TX and RX modules are equipped with two sets of XLRs to enable greater connectivity. This is basically a simple Y-jack that can be handy in certain situations.


Twisted pair cable was invented by Alexander Graham Bell in 1881. Twisting the wires in a pre-determined ratio creates a magnetic field that rejects noise. Early telephones could transmit a signal several kilometers before it had to be boosted. By 1900, the entire American telephone line network was either unshielded twisted pair or open wire with transposition to guard against interference. Today, most of the millions of kilometres of twisted pairs in the world are outdoor landlines, owned by telephone companies, used for voice service, and only handled or even seen by telephone workers.

The same unshielded twisted pair configuration is employed in Cat 5 and Cat 6 Ethernet cable. This makes it effective for transmitting audio signals. The benefits of using Cat 5 cable are numerous: the huge installed networks, ready availability from a host of suppli

INPUT - XLR-F inputs used to connect a mic, instrument or mixer to pass the signal to the RX module.

THRU - XLR-M thru wired in parallel with the option of mic or line level transformer isolation.

GROUND LIFT - Lifts the Catt 5 cable ground path to help eliminate troublesome ground loop noise.

14-GUAGE STEEL - Designed to handle the rigors of the road while proving extra shielding for the internal audio signals.

BUMPER - Used to protect the Ethernet and ground lift switch from damage.

CIRCUIT BOARD - Double-sided military spec for greater durability and full ground plane to reduce radio frequency interference.

TRANSFORMER - High performance transformer deliver great tone without noise.

RADIAL PUSH SWITCH - Road proven Radial switches feature extra durable metal outer casing. Rated at 20,000 cycles.

HANDLE - Protective steel handle makes it easy to pick-up and drop wherever needed.

LIFT - Lifts the Cat 5 cable ground path to help eliminate troublesome ground loop noise.

IN/OUT - Standard Ethernet connection for shielded Cat 5 cable depending on the model used to send/receive audio from Catapult modules.

THRU - Parallel connection from XLR outputs used to feed additional Catapult modules.

BUMPER - Used to protect the Ethernet connectors and ground lift switch from damage. Transformer isolation models True to the Music ® Radial Engineering Ltd. Catapult™ Audio Snake

LINE TRANSFORMER - TX4L and RX4L modules are transformer isolated at the XLR outputs and at the Ethernet THRU connector to provide line level isolation to eliminate hum and buzz.

POWDER COAT - Durable finish keeps your Catapult looking great for years.


  • Specifications are subject to change without notice.
  • Audio circuit type: Passive splitter, transformer based
  • Frequency response: 7Hz ~ 20KHz
  • Total harmonic distortion: 0.0005% @ 1kHz
  • Dynamic range: 140dB
  • Maximum Input: +35dBu
  • Minimum load impedance: 100 ohms
  • Common mode rejection: >103dB


  • XLR configuration: Hot = 2, Cold = 3, Ground = 1
  • Handle: Makes it easy to move your catapult
  • Ground lift: Disconnects ground on RJ45 connector


  • Construction: 14 gauge steel chassis & outer shell
  • Finish: Durable powder coat
  • Size: L: 8 1/8 x W: 4 1/8 x H: 2
  • Weight: 2.6 LBS
  • Shipping size: L: 11 x W: 5 x H: 2.75
  • Shipping weight: 2.9 LBS
  • Warranty: Radial 3-year, transferable


  • TX4: Transmit with 4 XLR ins & 4 XLR outs
  • RX4: Receive with 8 XLR outs
  • TX4M: Transmit 4 ins & 4 mic-level isolated outs
  • RX4M: Receive 4 outs & 4 mic-level isolated outs
  • TX4L: Transmit 4 ins & 4 line-level isolated outs
  • RX4L: Receive 4 outs & 4 line-level isolated outs

Manufacturer: Radial Engineering
SKU: I433844-N-0-WHXX
UPC: 676101044351

We are Chuck Levin's Washington Music Center

Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

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