Radial Engineering SW4 Users Manual

Radial± Smart Sheet

SW4

±

f o ur c ha n ne l a /b s w it ch e r

SW4 Order No. R800 8110 00

ON: Activates or mutes
the channel. LED indicator
illuminates when on.

A+B (channel-1): Mixes
inputs A and B together so
both can be active at once.

BUS: Sends output to the
master bus. Recessed to
prevent accidental switching.

TRIM: Separate trim controls are used to
match the signal coming into the A/B inputs.
Recessed to prevent accidental change.

AB: Selects active rear-panel
input. Yellow LED indicates
input A, orange LED for B.

The Radial SW4™ is a four channel audio switcher. Each channel can accept two balanced
signals and toggle between them using a front panel switch or remote control. The four
channels are equipped with trim controls to ensure both sources are matched and supported
with LED indicators for signal presence. The channels may be linked together for stereo,
three-way, or 4 channel switching and expanded to more SW4s if needed. All outputs are
transformer isolated and capable of +20dB signal handling at all frequencies without audible
distortion. A 3-position PFL switch on each channel works with the built-in headphone ampli-

er to listen to the active input, the standby input or the built-in stereo bus. Two dedicated ¼”
outputs and a top-mounted mono switch converts the SW4 for use with guitars.

SIGNAL: Signal presence LED
indicator lets you know the signal
is being received by the SW4.

PFL: Pre fade listen lets you select between
the A or B sources. When set to off, the
headphones receive the master bus output.

BUS OUT: Level control
used to adjust the output
of the master bus outputs.

MUTE LED: Works with optional JR2
remote control, turns off all outputs
except the headphone and tuner out.

PFL LED: Will illuminate
when any of the PFL channel
switches are activated.

PHONES:
Headphone may be
set to stereo or mono
depending on your
application.

MASTER OUTPUT: Left and right XLR-male
outputs are fed from the bus. When used in stereo,
channels 1 & 3 are routed left, while channels 2 &
4 are routed right. Top-mounted mono-sum switch
sends all channels to both outputs.

LOCKING XLR POWER:

The external power supply
connects with a locking
connector for reliable power.

REMOTE FOOT SWITCH: Input connection for the optional JR2
footswitch or JR2 DT desktop dual function remote controls. The AB
switch is used to select between the A and B inputs on channel-1 along
with linked channels. The MUTE switch is used to turn off all outputs
except the front panel headphone and tuner (monitor) outs.

1/4” OUTPUTS: Dual hi-Z guitar amp outputs are
transformer isolated to eliminate hum and buzz
caused by ground loops. The top ¼” jack produces
a summed mono output when the bottom jack is
not in use.

CHANNEL 1~4 INPUTS: Balanced
XLR-F A and B inputs accept mic or
line levels. Front panel trim control is
used to match their levels.

JR-2

CHANNEL 1~4 OUTPUTS: Balanced
XLR-M outputs are transformer
isolated to eliminate hum and buzz
caused by ground loops.

JR-2 DT

Switching between wireless systems

The SW4 is great for switching between two or
more wireless systems. Use it for backup or to
enhance the show without taking up more audio
channels. Can also be used on wireless guitars!

Radial Engineering Ltd. • © Copyright 2018 all rights reserved • www.radialeng.com • email [e-mail] • Subject to change without notice • Made in Canada

Switching between stereo sources

Use the SW4 as a safety backup to switch
between two digital playback systems. Connect
the left channels to input-1 and the right
channels to input-2. Link them together for
stereo switching.

Toggling between two consoles

With four channels, you can instantly switch

left, right, front down ll and subs with a push
button. The SW4 gives you +20dB of signal

handling to handle high output systems.