Radial engineering Relay Xo Active Balanced Remote Output AB Switcher User Guide
- June 13, 2024
- Radial engineering
Table of Contents
True to the Music
Relay Xo Active Balanced Remote Output AB Switcher
User Guide USER GUIDE
Radial Engineering Ltd.
1845 Kingsway Ave, Port Coquitlam, BC V3C 1S9
tel: 604-942-1001
fax: 604-942-1010
email: info@radialeng.com
OVERVIEW
Thank you for purchasing the Radial Relay Xo, a simple yet effective switching
device designed to toggle a microphone or other balanced audio signal between
two channels on a PA system. As with all products, getting to know the feature
set is essential if you intend to get the most out of the Relay.
Please take a minute to read through this short manual. If you are left with
unanswered questions, feel free to send us an email at
info@radialeng.com and we will do our best to
reply in short order. Now get ready to remotely switch to your heart’s
content!
The Relay is basically a 1-in, 2-out straight-wire switcher for balanced
audio.
There is no transformer or buffering circuitry in between the input and
outputs.
This means the Relay Xo can not introduce distortion or noise into the source
signal and allows it to be used with mic or line level sources. A link feature
allows multiple Relay Xo units to be combined and switch stereo or
multichannel audio systems.
Switching can be done on the Relay Xo, via remote footswitch or by MIDI
contact closure.
MAKING CONNECTIONS
Before making any connections, make sure volume levels are turned off or down
and/or power is turned off. This will help you avoid turn-on or power-on
transients that could harm more sensitive components like tweeters. There is
no power switch on the Relay. Simply plug in the included 15 VDC supply and
it will spring to life. A cable clamp next to the power jack can be employed
to prevent accidental disconnection.
The audio input and outputs employ balanced XLR connections wired to the AES
standard with pin-1 ground, pin-2 hot (+), and pin-3 cold (-). Connect your
source device such as a microphone or wireless mic receiver to the Relay Xo
input jack. Connect the A and B outputs to two inputs on a mixer.
Switching between the outputs can be done using the OUTPUT SELECT push button on the side panel. Start by setting up channel-A. Set the AB selector switch set to the A position (outward). Speak into the mic while slowly bringing up the volume levels. To set up the channel-B depress the AB selector switch to toggle the output. The LED indicators illuminate to display the active output.
REMOTE CONTROL
The Relay Xo’s outputs may be toggled remotely using an external ‘latching’ or ‘momentary’ switch connected to the ‘JR1 REMOTE’ jack. This combo jack features a locking XLR and ¼” input. The ¼” connection works with any standard footswitch such as a momentary sustain pedal or a latching amplifier channel switch. It can also work with any device equipped with a ¼” contact-closure output like a MIDI controller.
Both the combo jack’s XLR and ¼” connection work with the optional Radial JR1 footswitches. The JR1 footswitches are also equipped with locking XLR jacks allowing you to use either type of cable. Locking connectors are beneficial on busy stages as it reduces the opportunity for a connection to come lose during a performance. The JR1 footswitches are available in momentary (JR1-M) or latching (JR1-L) formats to address various needs on stage and include A/B LED status indicators.
Because footswitches are either momentary or latching it’s important to
understand how the Relay Xo works with these two types of switches. A
momentary footswitch, like the JR1-M or a keyboard sustain pedal, will toggle
to output-B only while held down. Once the momentary footswitch is released
the Relay Xo will toggle back to output-A. A latching footswitch, like the
JR1L or an amplifier AB channel selector switch will toggle the Relay each
time it is pressed. One press will toggle to output-B. Pressing again with
toggle back to output-A.
MULTI-CHANNEL SWITCHING
Two or more Relay Xo units can be switched in tandem by simply bridging the
devices together using a standard ¼” patch cable. The LINK feature allows
switching of stereo and multi-channel audio systems from a single switch.
Connect a footswitch to the first unit or use the side panel OUTPUT SELECT
switch.
Connect the ¼” LINK jack on the first unit to the JR1 REMOTE jack on the
second.
You can connect as many successive units as you like this way.
USING THE RELAY XO FOR A TALK-BACK SYSTEM
A momentary footswitch, like the optional JR1M, is recommended when using the
Relay Xo as a talk-back or communication mic switcher as this requires holding
the footswitch ‘on’ to speak with other band members or the crew.
Releasing the footswitch reverts back to normal. This avoids accidentally
leaving the Relay on ‘communication mode’ which could otherwise prove to be
embarrassing if left on.
USING THE RELAY XO TO SWITCH MIXER CHANNELS
Using a latching switch, like the optional JR1L, is suggested when switching
between audio channels on a PA system. Switching channels lets you alternate
between a dry channel for communication with the audience and a wet channel
with echo and reverb for singing.
FEATURES
-
JR1 REMOTE: Locking XLR and ¼” combo jack used to connect a remote switch. Use with footswitches, MIDI contact closures or the Radial JR1.
-
REMOTE LINK: Used to link the switching of additional Relay Xo units. Allows stereo and multichannel switching systems.
-
MIC/LINE INPUT: Balanced XLR input.
The Relay Xo signal path is 100% passive.
Audio signals will pass through unchanged without added noise or distortion. -
OUTPUT-B: Alternate balanced XLR output.
This output is active when the select switch is pressed inward or when a remote switch is closed.
The B LED illuminates when the output is active. -
OUTPUT-A: Main balanced XLR output.
This output is active when the switch is in the outward position or when a remote switch is open.
The A LED illuminates when the output is active. -
CABLE CLAMP: Prevents accidental power disconnection by locking down the AC adapter cable.
-
POWER JACK: Connection for the included 15 volt (400mA) AC power adapter
-
FULL-BOTTOM NO-SLIP PAD: This provides electrical isolation and plenty of ‘stay-put’ friction to keep the Relay Xo in one place.
-
OUTPUT SELECT: This switch toggles the Relay Xo’s outputs. Two LED indicators display which output is active.
-
GROUND LIFT: Disconnects pin-1 (ground) on the input XLR jack to help reduce hum and buzz caused by ground loops.
Relay Xo specifications
Audio circuit type: ……………………………………….. Passive balanced A/B switcher
Switch: ………………………………………………………. Electronically controlled relay
XLR input and outputs: ………………………………… AES standard; pin-1 ground, pin-2 (+),
pin-3 (-)
Ground lift: …………………………………………………. Lifts pin-1 on the XLR input
Power: ………………………………………………………. 15V/400mA, 120V/240 power adapter included
Wiring diagram for custom JR1 REMOTE switch
RADIAL ENGINEERING 3 YEAR TRANSFERABLE LIMITED 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 finish 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. In the unlikely event that a defect is uncovered, please call
604-942-1001 or email
service@radialeng.com to obtain an RA number (Return Authorization number)
before the 3 year warranty period expires. 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 warranty shall not apply if the product has
been damaged due to abuse, misuse, misapplication, accident or as a result of
service or modification by any other than an authorized Radial repair 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.
Relay Xo™ User Guide – Part# R870 1275 00 / 08_2022
Specifications and appearance are subject to change without notice.
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