Radial Engineering SW8 MK2 User Manual - page 7
Radial Engineering Ltd.
SW8
™
MK2 User Guide
5
SWITCHING THE SW8 VIA A REMOTE
It is sometimes preferable to have the playback recorders and SW8 located in a secondary rack off to the side. A common example would
be a keyboard player that is also managing the playback system. To address these situations, the SW8 may be remotely switched using a
common latching footswitch.
The rear panel is equipped with a ¼” CONTACT INPUT jack that will cause the SW8 to switch by merely shorting the tip of the ¼” connector
to ground. Switching can be performed using a typical guitar amp latching footswitch such as the type used to switch channels or turn on a
reverb. You can also cause the SW8 to change inputs using a simple toggle switch or by connecting a contact closure from a MIDI system.
PLAYBACK SYSTEM
CONTROL
LATCHING
FOOTSWITCH
PRIMARY-A
MULTI-TRACK
BACKUP-B
MULTI-TRACK
Using the JR2 Remote
The optional Radial JR2 is a compact footswitch that is equipped with two foot-activated switches, accompanying LED indicators and choice
of XLR or ¼” TRS output connectors. This multipurpose footswitch is unique in that it derives its power from the device that is connected –
which in this case is the SW8. The right footswitch is labelled A/B and the left hand switch is labeled mute. When used with the SW8, the
A/B footswitch switches the SW8 between A and B inputs. The JR2 mute switch actually sets the SW8 into standby mode which is discussed
later in this manual. Simply plug the JR2 into the SW8 using a standard XLR mic cable and turn on the JR2 function by depressing the ON
A/B switch. Test by depressing the right hand A-B footswitch. The LED indicators will follow to let you know the status.
PLAYBACK SYSTEM
CONTROL
PRIMARY-A
MULTI-TRACK
BACKUP-B
MULTI-TRACK
JR2 FOOTSWITCH
CONTROL
STANDBY (MUTE): Holds
auto-switching on inputs-A
while playback is paused.
A-B SELECT: Used to
remotely switch from
inputs-A to inputs-B.
Using the 24V alarm output
In certain situations, creating some sort of visual or audible alarm may be needed. For instance, lighting a beacon or sounding a buzzer can
notify the audio engineer of a problem. Another example may be when using the SW8 as part of an evacuation system to sound an alarm.
The SW8 is equipped with a special 24 volt relay that is designed for this purpose. The relay is connected to an external circuit and power
supply using a standard ¼” jack on the rear panel as illustrated below..
Normally, the relay is in an ‘open’ state preventing current from fl owing through the external circuit. If the drone signal feeding the AUTO-
GATE input falls below the set THRESHOLD level, the relay closes allowing current to fl ow through the external alarm circuit and the front
panel ALARM LED illuminates. When the drone track is restored the relay opens and the alarm turns off.