Radial Engineering SGI-44 Manual

Radial Engineering Ikke kategoriseret SGI-44

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True to the Music

Radial Engineering Ltd.

JX44 Owner’s Manual

RADIAL SGI-44 BALANCED GUITAR INTERFACE

When used in combination with the JX44 the optional SGI-44 can either be used

as a bi-directional long haul eects loop or as a single ended driver from a guitar

to the JX44 and your amps. Balanced audio connections between the JX44 and

SGI-44 allow distances up to 100 meters (300 feet) using standard XLR mic cable.

This is accomplished using a proprietary hybrid active drive circuit with Jensen

transformer isolation to transfer the signal between units without introducing noise

or signal loss.

A recessed DRAG control is provided at the SGI-44 input allowing for the most

natural tone when driving the JX44 directly from a guitar. As an added convenience,

the SGI-44 is equipped with a buered tuner output. Connecting your tuner here

will remove it from your signal chain to prevent digital clock noise from bleeding

into your guitar sound.

HOW IT WORKS

When active, the SGI LOOP on-board the JX44 is global to all instrument inputs.

The SGI interface converts instruments to a proprietary balanced low impedance

signal. The converted signal is then output at the TX (transmit) jack on the back

of the JX44.

The SGI-44 receives the signal at its RX (receive) jack and converts it to

unbalanced high impedance for connection to eect pedals. The hi-Z output from

the pedals is connected back to the SGI-44 where it is re-converted to a balanced

low impedance signal and returned to the JX44 to complete the SGI LOOP

(Fig.35). In the block diagram below you can see the SGI LOOP is inserted in the

signal path after the inputs and before the local EFX eects loop.

INPUTS

A THRU D

EFX SEND

EFX RECV

SGI TX

SGI RX

AMPLIFIER OUTPUTS

1 THRU 4

LOCAL

EFX LOOP

SGI LOOP

JX44

USING THE SGI-44

Begin by connecting the included 15VDC power supply to the SGI-44. The power

connection includes a cable clamp feature to prevent accidental power loss.

Loosen the clamp screw, loop the power cable through and re-tighten so it looks

like the photo below. Once connected the POWER LED will illuminate.

Next, make the balanced connection between the JX44 and the SGI-44 using

good quality XLR mic cables. The TX (transmit) output from the JX44 connects to

the RX (receive) input on the SGI-44 Connect your eect pedals to the (Fig.36).

SGI-44’s ¼” hi-Z guitar jacks . Finally, connect the TX output from the SGI-(Fig.37)

44 to the RX input on the JX44 to complete the loop.

Once the loop is connected depress the ON switch located

in the SGI section of the rear panel. The SGI LOOP LED

in the SYSTEM MONITOR illuminates when the interface

is active. Both the on-board SGI and the SGI-44 are

transformer isolated to eliminate noise caused by ground

loops. If you hear hum or buzz after connecting try toggling the LIFT switches on

the SGI-44 and on the rear panel of the JX44 at the SGI section. If you don’t hear

your pedals double check your connections.

Fig.36 - Balanced XLR connections between

the JX44 and SGI-44.

Fig.37 - Hi-Z guitar, eect and tuner connections.

Fig.35 - The complete SGI LOOP.

True to the Music

Radial Engineering Ltd. JX44 Owner’s Manual

EXAMPLE 1: WIRELESS GUITAR AND LONG HAUL PEDALBOARD

In this application the JX44 is located near the player’s wireless receivers and

guitar ampliﬁ ers. The SGI-44 and JR5 reside on the player’s pedalboard. The

signal starts at the guitar through the wireless link to the receiver. From the

receiver it ﬂ ows into the JX44 inputs. At this point the SGI LOOP circuit sends the

signal out to the pedals and back again via the SGI interface. The artist can enjoy

the freedom of the wireless guitar and have their pedals out front at their feet along

with the JR5 to control amps.

Up to

300

feet

EXAMPLE 2: REMOTE AMPS IN THE STUDIO

Playing guitar in the control room while recording your amps out in the studio can

be particularly advantageous. It allows you to hear the guitar sound exactly as it

will be recorded over the studio monitors. To accomplish this, connect your guitar

to the SGI-44 ¼” guitar input and make a single balanced connection from the SGI-

44 to the to the RX jack on the back of the JX44 using an XLR mic cable. In the

control room the SGI-44 lets you connect eect pedals and tuners. In the studio

the JX44 receives the SGI signal and drives the ampliﬁ ers.

Connecting is easy because the SGI interface uses balanced XLR connections

that are 100% compatible with studio patchbays and tie lines. You can take this

setup one step further and add the JR5 footswitch for selecting the amps remotely

from the producers chair.

Up to

300 feet

EXAMPLE 3: LONG HAUL PASSIVE GUITAR CONNECTION

The SGI-44 is ideal for the purists who prefer a real cable over a wireless system

to make a long distance connection between the guitar and the JX44. The Radial

class-A driver and DRAG control combine forces allowing you to dial in the tone

that sounds the most natural despite the long cable run. Add the JR5 footswitch

and you can control your setup remotely from the base of your vocal mic stand.

Up to

300

feet

IHG

C DBA

SGI-44 FEATURES AND FUNCTIONS

F. TUNER OUTPUT - Separately buered

1/4” high impedance output for electronic

tuner.

G. DRAG™ - Load correction function for

passive pickups.

H. POWER LED - Indicates the power

supply is connected.

I. INPUT - 1/4” jack receives signal from the

output of your eects or guitar.

J. OUTPUT - 1/4” jack sends signal to the

input of your eect pedals or amp.

A. RECEIVE - Female XLR receives a

proprietary balanced signal from the

JX44’s SGI-TX output.

B. LIFT - Disconnects the pin-1 ground at

the RECEIVE XLR to reduce noise from

ground loops.

C. TRANSMIT - Male XLR transmits a

proprietary balanced signal to the JX44’s

SGI-RX input.

D. CABLE CLAMP - Prevents accidental

power disconnect.

E. POWER - Connection for the included

15VDC power supply.

Produkt Specifikationer

Mærke:	Radial Engineering
Kategori:	Ikke kategoriseret
Model:	SGI-44

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