Radial Engineering SGI TX

Radial Engineering's SGI TX is the only high-performance line driver TX transmission module for guitars or basses, consisting of a TX transmit unit and an RX receive unit. The complete system can take an unbalanced signal and send it up to 100 meters away using a common balanced XLR cable without loss of signal quality and tone. SGI TX can also be easily installed in guitar set-ups and powered with standard 9V adapters.

Notable features

• TX transmission unit of balanced guitar and bass line driver
• Sends signal up to 100 meters (300ft) without loss
• Jensen transformers for optimal sound quality
• Does not alter the natural timbre of instruments or amplifiers
• Can be powered by standard 9V pedalboard power supplies

Does not alter the timbre of the instrument

SGI TX sends guitar or bass signals over long distances without loss of signal or noise, maintaining the original timbre of the instrument. In the studio, it allows the guitarist to sit in the control room and connect to a distant guitar amplifier. On stage, the SGI TX can be used to transmit guitar amp sound using an offstage isolation cabinet or to manage guitar signals to and from wireless systems, pedalboards, and amplifiers.

Front and rear panel layout

1. Power indicator light
2. Drag control adjusts the sensitivity level of the Pickup
3. Guitar or bass signal input standard 1/4'' jack connector
4. Balanced signal output XLR connector

How it works

The complete SGI system consists of two elements: the SGI-TX transmitter and the SGI-RX receiver. The connection between TX and RX is made via a standard balanced XLR microphone cable. To use it, simply connect your guitar to the input of the SGI-TX and your amplifier to the output of the SGI-RX, and you're done. SGI TX uses a discrete buffer circuit to drive signals over long distances, while the SGI RX captures the signal and converts it to the appropriate impedance to power the amplifier while maintaining the original tone.

Jensen Transformer

The SGI system is now equipped with Jensen transformers that ensure superior audio quality-one on the SGI TX and the other on the SGI RX. These transformers not only serve to provide isolation to prevent hum and ground loop noise, but are a critical part of the circuit that converts the signal at each end of the system. The use of industry-leading Jensen transformers in the SGI contributes to a wider and more linear frequency response, lower noise and distortion, better dynamic range, and higher signal-to-noise ratio. All this helps to transmit audio cleanly over long distances without altering the original signal.

Compatible with pedalboards

SGI TX comes with an included 15 V power supply to power the TX transmitter unit, but it can also be used with standard pedalboard power supplies, making integration with these devices easier. Any 9V to 15V power supply can be used, and both polarities, positive and negative, of the center pin are accepted.

Note: This applies only to the latest model of SGI the one with the Jensen Equipped label on the top of the unit.

Applications of SGI

SGI is the perfect interface for recording in the studio. Now you can sit in the control room and play your guitar, listening to the monitors in the control room as you play. Simply connect your guitar to the SGI-TX, run a balanced cable to the SGI-RX, and play loud!

Using Radial SGI on stage

SGI offers a ready solution for large stages, where high impedance guitar signals are often affected by long cable capacitance or noise from lighting systems. SGI balances the signal and delivers it without noise. Perfect for isolation cabinets, under-stage amplifiers, or quiet remote rooms.

A solution for complex routing systems

SGI can also be used to manage complex onstage configurations. You can route the signal from the wireless receiver to the pedalboard; then, use a second unit to bring the signal back to the guitar amplifier and push the signals to where it is needed without introducing noise.