Radial Engineering SGI-RX, SGI-TX, SGI Quick Start Guide

R a d i a l S m a r t S h e e t

Order No. R800 1600

S G I™ S T U D I O G U I TA R I N T E R FA C E

Radial SGI Studio Guitar Interface is a transmit (SGI-TX) and receive (SGI-RX) pair of
modules that allows a guitar signal to travel across 300 feet of balanced cable to a distant
amplifi er. The SGI is a unity gain device that features 100% discreet Class-A circuitry for
great sound and transformer isolation to eliminate ground loops.

For the studio, the SGI allows the guitarist to play in the control room while listening to the
studio monitors. For live performance, the SGI allows amplifi ers to be located off stage while
improving sound and reliability over wireless systems.

The guitar connects directly to the SGI-TX which performs level and impedance conversion
and outputs a balanced signal. The output is similar to that of microphones and DI’s allowing
the SGI to be used with studio wiring and concert snake systems. At the far end of the
balanced line sits the SGI-RX which converts the signal back to a hi-Z instrument level
output that connects to pedalboards and amplifi ers. With the SGI, the guitarist can now play
the roles of performer, engineer and producer, while saving immeasurable time during the
recording process. Comes complete with 15VDC power supply for the SGI-TX module. The
SGI-RX is passive and does not require power.

Features

• Active transmit and receive guitar interface

• Class-A circuit for great sound with long cables

• Transformer-isolated at each end to eliminate ground loops

• Drag™ control pickup load correction

Applications

• Connect guitar amps up to 300 feet away (100m)

• Play in the control room and isolate amps in studio

• Locate amps off-stage for live performance

Cool stuff

• Retains original tone of guitar

• Quiet, adds nothing, unity gain input/output

• Uses common XLR mic cables and snakes

• Same buffer circuit used in Radial JD7 Injector

• ‘Plug & Play’ easy-to-use

• 3 year transferable warranty

That’s a lot of cable!

No problem for the SGI

PSU CONNECTOR
15VDC supply.

GROUND LIFT switch
disconnects pin-1 on the XLR out to help
reduce noise caused by ground loops.

XLR TRANSMIT OUTPUT
600Ω, balanced XLR output sends
signal to the SGI-RX using standard
mic cable up to 300 feet.

HEAVY-DUTY WELDED I-BEAM
enclosure of 14 gauge steel.

DRAG CONTROL
allows you to reintroduce the natural
tone that is lost with buffered inputs.

GUITAR INPUT hi-Z standard ¼” jack
for guitar, bass and keys.

GUITAR OUTPUT

1/4” output connects to amps or pedals.

FULL BOTTOM PAD
improves electrical isolation and keeps
the SGI from moving around on busy
stages!

XLR RECEIVE INPUT 600Ω, balanced
input receives signal from SGI-TX unit.

GROUND LIFT switch
disconnects pin-1 on the XLR out to help
reduces noise caused by ground loops.

SGI with Wireless Systems

A no-compromise approach for players with a
wireless and pedalboard. Gives you complete
freedom to place gear where you need it.

From Wireless

To Amplifi er

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SGI with Off-Stage Amps

Isolate loud amplifi ers by placing them way,
way off-stage. Improves stage monitoring by
lowering stage volume.

SGI in the Studio

Connect to an amp in the studio while record­ing in the control room. Lets you monitor your
ultra loud amp through the studio monitors.

Studio
Snake