Relay Xo Active Balanced Remote Output AB Switcher
Product Information:
- Product Name: Relay Xo
- Manufacturer: Radial Engineering Ltd.
- Features:
- 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: Provides electrical isolation and
plenty of ‘stay-put’ friction to keep the Relay Xo in one
place. - OUTPUT SELECT: Switches 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.
- Remote Link: Used to link the switching of additional 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
Product Usage Instructions:
- Before making any connections, ensure that volume levels are
turned off or down and/or power is turned off to avoid turn-on or
power-on transients that could harm sensitive components. - To connect a source device such as a microphone or wireless mic
receiver, use a balanced XLR cable to connect the device to the
MIC/LINE INPUT jack on the Relay Xo. - Connect the A and B outputs of the Relay Xo to two inputs on a
mixer using balanced XLR cables. - If using multiple Relay Xo units in a stereo or multichannel
switching system, use the REMOTE LINK feature to link the switching
of the additional units. - Use the OUTPUT SELECT switch to toggle between the Relay Xo’s
outputs. The LED indicators will display which output is
active. - To activate OUTPUT-B, press the select switch inward or close a
remote switch. The B LED will illuminate when the output is
active. - To activate OUTPUT-A, ensure that the switch is in the outward
position or that a remote switch is open. The A LED will illuminate
when the output is active. - If ground loops are causing hum and buzz, use the GROUND LIFT
switch to disconnect pin-1 (ground) on the input XLR jack. - To prevent accidental power disconnection, use the CABLE CLAMP
to lock down the AC adapter cable. - Plug in the included 15VDC power adapter to power on the Relay
Xo. There is no power switch on the device.
FEATURES
1. JR1 REMOTE: Locking XLR and ¼” combo jack used to connect a remote switch. Use with footswitches, MIDI contact closures or the Radial JR1.
2. REMOTE LINK: Used to link the switching of additional Relay Xo units. Allows stereo and multichannel switching systems.
3. 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.
4. 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.
5. 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.
6. CABLE CLAMP: Prevents accidental power disconnection by locking down the AC adapter cable.
7. POWER JACK: Connection for the included 15 volt (400mA) AC power adapter
8. FULL-BOTTOM NO-SLIP PAD: This provides electrical isolation and plenty of `stay-put’ friction to keep the Relay Xo in one place.
9. OUTPUT SELECT: This switch toggles the Relay Xo’s outputs. Two LED indicators display which output is active.
10. GROUND LIFT: Disconnects pin-1 (ground) on the input XLR jack to help reduce hum and buzz caused by ground loops.
Radial Engineering Ltd.
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®
True to the Music
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
Tip
Sleeve
Cable Shield
Open Switch
12 3
Cable Shield
Open Switch
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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 [email protected] 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 XoTM
Radial Engineering Ltd.
Relay XoTM
www.radialeng.com
®
True to the Music
TM
REMOTE AB SWITCHER
USER GUIDE
Radial Engineering Ltd. 1845 Kingsway Ave, Port Coquitlam, BC V3C 1S9 tel: 604-942-1001 · fax: 604-942-1010 email: [email protected]
Relay XoTM User Guide – Part# R870 1275 00 / 08_2022 Specifications and appearance are subject to change without notice. © Copyright 2014 all rights reserved
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 [email protected] 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.
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.
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.
Wireless Receiver
Simple footswitches and contact-closure devices like MIDI controllers use ¼” cables to connect to the Relay Xo.
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.
JR1-M Momentary
BA
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.
AB
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.
Radial Engineering Ltd.
Relay XoTM
The JR1 uses either ¼” or locking XLR cable to connect to the Relay Xo.
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.
JR1-M or JR1-L Radial Engineering Ltd.
¼” Link Cables
Relay XoTM
In-ear Transmitter
In-ear Monitor Mixer
FOH Mixer
House PA System
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.
Wireless Receiver
JR1-L Latching
Radial Engineering Ltd.
Digital Effects
Dry Ch.
Wet Ch.
FOH Mixer
House PA System
Relay XoTM
