Radial Engineering Twin-Iso Manual

Radial Engineering Ikke kategoriseret Twin-Iso

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Side 1/2

TWIN-ISO SPECIFICATIONS

Audio circuit type .................................Passive line-level isolation, transformer based

Number of channels ............................Stereo (dual mono)

Frequency response ............................10Hz ~ 50KHz (± 1dB)

Dynamic range ....................................135dB

Maximum input ....................................+21dBu @ 1kHz, 1% THD+N

Total harmonic distortion......................0.001% @ 1kHz, +4dBu output

Phase deviation ...................................0.5° @ 100Hz; 3° @ 20Hz

Input/Output impedance ......................600 Ohms, balanced

High pass ﬁ lter .....................................-3dB @ 100Hz (12dB.Oct.)

Ground lift ............................................Disconnects XLR pin-1 at isolated output

XLR conﬁ guration ................................AES standard (pin-2 hot)

Connectors ..........................................XLR-M inputs; XLR-F outputs

Construction ........................................14 gauge steel chassis & outer shell

Finish ...................................................Baked enamel

Size (W x H x D) .................................. 84 x 127 x 48mm (3.3” x 5.0” x 2”)

Weight .................................................0.70 kg (1.55 lbs)

Shipping Size: W x H x D ....................102 x 76 x 165mm (4” x 3” x 6.5”)

Shipping Weight ...................................87 kg (1.92 lbs)

Power ..................................................Passive, no power required

Warranty ..............................................Radial 3-year, transferable

INPUT PANEL

1. Ground lift (inputs) Lifts

the ground pin-1 on both

XLR input connectors.

2. Input-1 & 2 For low

impedance 600 ohms,

balanced line-level signals.

3. Bookend design 14

gauge steel outer shell

creates protective zone

around connectors and

switches.

OUTPUT PANEL

4. Output-1 & 2 600 ohm

line-level transformer-

isolated.

5. Polarity reverse 180°

Polarity reverse phase

reverse switch for

outputs-1 & 2.

6. Full-bottom no-slip pad

This provides electrical

isolation and plenty of

"stay-put" friction to keep

the Twin-Iso in one place.

CONSTRUCTION

7. Ultra rigid steel I-beam

enclosure eliminates

stress that could torque

the PC board and cause

solder joint failure.

8. Radial Eclipse

transformers offer

outstanding audio

performance.

9. Military-grade double-

sided PCB with plated

through-holes is bolted to

welded steel standoffs.

10. Sturdy high-cycle PCB

mounted switches are

rated for long life.

www.radialeng.com

Radial Engineering Ltd.

1588 Kebet Way, Port Coquitlam BC V3C 5M5

Tel: 604-942-1001 Fax: 604-942-1010

email: info@radialeng.com

Twin-Iso™

True to the Music

Radial Twin-Iso User Guide - Part #: R870 1025 00

Appearances and speciﬁ cations subject to change without notice.

2 3

Twin-Iso™ User GuideRadial Engineering Ltd. Twin-Iso™ User GuideRadial Engineering Ltd.

RADIAL LIMITED THREE YEAR

TRANSFERABLE WARRANTY

RADIAL ENGINEERING LTD. (“Radial”) warrants this product to be free from defects in

material and workmanship and will remedy any such defects free of charge according

to the terms of this warranty. Radial will repair or replace (at its option) any defective

component(s) of this product (excluding ﬁ nish and wear and tear on components under

normal use) for a period of three (3) years from the original date of purchase. In the

event that a particular product is no longer available, Radial reserves the right to replace

the product with a similar product of equal or greater value. To make a request or claim

under this limited warranty, the product must be returned prepaid in the original shipping

container (or equivalent) to Radial or to an authorized Radial repair center and you

must assume the risk of loss or damage. A copy of the original invoice showing date of

purchase and the dealer name must accompany any request for work to be performed

under this limited and transferable warranty. This limited warranty shall not apply if the

product has been damaged due to abuse, misuse,misapplication, accident or as a

result of service or modiﬁ cation by any other than an authorized Radialrepair center.

THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE FACE

HEREOF AND DESCRIBED ABOVE. NO WARRANTIES WHETHER EXPRESSED

OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL EXTEND

BEYOND THE RESPECTIVE WARRANTY PERIOD DESCRIBED ABOVE OF THREE

YEARS. RADIAL SHALL NOT BE RESPONSIBLE OR LIABLE FOR ANY SPECIAL,

INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSS ARISING FROM THE USE

OF THIS PRODUCT. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS,

AND YOU MAY ALSO HAVE OTHER RIGHTS, WHICH MAY VARY DEPENDING ON

WHERE YOU LIVE AND WHERE THE PRODUCT WAS PURCHASED.

User Guide

J-RAK4 and J-RAK8

The optional J-RAK4 and 8 are high density rackshelfs for Radial DI’s and

splitters. The J-RAK4 is a 19” rack chassis that mounts four Radial devices in

one rack space (1RU). The J-RAK8 mounts eight Radial DI’s in two rack spaces

(2RU). Devices can be mounted with either the input side or output side facing

the front. Ideal way of organizing your DI’s for studio or touring.

J-RAK4

J-RAK8

J-CLAMP

The optional J-CLAMP can mount a single Radial

device to virtually any surface. Perfect for hiding

away inside racks on podiums or under tables.

Constructed of 14 gauge steel with a baked

enamel ﬁ nish.

TWIN-ISO BLOCK DIAGRAM

LEFT IN LEFT OUT

RIGHT IN RIGHT OUT

POLARITY

GND LIFT

POLARITY

WELCOME

Congratulations on your purchase of the Radial Twin-Iso stereo (dual mono)

line-level isolator. The Twin-Iso is a handy device that will allow you to isolate

audio equipment and eliminate troublesome noise caused by ground loops.

The Twin-Iso employs two high-performance Radial Eclipse isolation

transformers to ensure the best signal transfer is enjoyed without artifacts or

distortion. This makes the Twin-Iso a perfect choice where multiple consoles

need to be sub-mixed, when isolating ampliﬁ er distribution racks and for

connecting remote speaker towers. The Twin-Iso can also eliminate ground

loop problems where equipment must be connected to alternate power

sources such as generators.

As with all Radial products, the Twin-Iso is made with 14 gauge steel and

features an internal welded I-beam frame for maximum rigidity. Switches

and jacks are protected by our unique bookend construction, making the

Twin-Iso virtually impossible to damage even in the most abusive touring

environments.

We have purposely written this manual to be short, as most users will likely

be familiar with the Twin-Iso’s applications. We do suggest that you take a

moment to read through this document to familiarize yourself with the features

that have been built in. For more detailed information, please visit the Radial

website. This is also where we post questions and answers that come from

users after the product is released. If you do not ﬁ nd an answer, we invite you

to send us an email at info@radialeng.com and we will do our best to answer

your query in a prompt and professional manner.

INTRODUCTION

The Radial Twin-Iso has been designed to provide electrical isolation

between two line-level devices such as between two mixing consoles, remote

speakers, crossovers and ampliﬁ er racks. Use the Twin-Iso anywhere source

and destination devices may cause system noise because of different ground

potentials (often referred to as ground loops).

So-called ground loops are caused by differing voltage references from various

pieces of equipment that, when connected together, can introduce a 60 cycle

hum in the sound system. Although there are various solutions that can be

engineered to eliminate noise, the simplest and most effective is to isolate the

source and destination with an audio transformer.

The Twin-Iso employs two high-quality Radial Eclipse transformers to do the

task. We engineered the Eclipse line of transformers to handle high input

levels without saturation while transfering the full signal without introducing

phase distortion or group delay. Although the cost is higher, a good quality

transformer will assure the signal remains true to the source, resulting in better

sound.

When you ﬁ rst pick up the Radial Twin-Iso, you will immediately notice the

weight. This ‘hefty’ device employs a welded steel I-beam internal construction

to assure the internal PC will not torque, which of course could develop into

cold solder joints, the single biggest cause of circuit failure.

The Radial Twin-Iso is equipped with two XLR inputs and two XLR outputs. Each

channel is 100% isolated from the other to eliminate cross-talk or interaction,

thus allowing two completely different audio sources to use the Twin-Iso at the

same time. Although the Twin-Iso is designed for +4dB professional line-level

signals, the transformers will actually handle over 20dB without choking.

Each of the Twin-Iso’s outputs feature a 180° polarity reverse switch to ensure

both consoles are ‘in phase’ and pushing the speakers in the same direction.

This allows the Twin-Iso to feed a sub-group or auxiliary input of a console

where polarity reversals are generally not provided. Finally, the Twin-Iso is

equipped with a ground lift switch to further reduce system noise should it be

present.

USING THE TWIN-ISO

As with all Radial products, using the Twin-Iso is simple and straight forward.

Make sure the sound system is turned off and all levels are set to zero before

making audio connections. This will avoid any pops in the sound system that

could cause damage to speakers.

The Twin-Iso is completely passive and does not require a power supply of

any kind. Connect the source device to the Twin-Iso inputs. Connect the Twin-

Iso outputs to the destination device. Turn the system up slowly and listen for

noise. If you encounter noise, simply depress the ground lift switch. That’s all

there is to it.

Twin-Iso™ User Guide Twin-Iso™ User Guide Twin-Iso™ User Guide

Radial Engineering Ltd.Radial Engineering Ltd.Radial Engineering Ltd.

Using the Twin-Iso to isolate two mixers

Using the Twin-Iso between mixer and amp racks

Using the Twin-Iso to eliminate noise

Produkt Specifikationer

Mærke:	Radial Engineering
Kategori:	Ikke kategoriseret
Model:	Twin-Iso

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