Features And Function Details - Radial Engineering SW4 Owner's Manual

True to the Music
INPUT CHANNEL DETAILS
15. ON: This switch turns the channel output on. When the channel is turned
on, the LED indicator illuminates. When turned off, the channel output is
muted.
16. BUS: This recessed switch routes the output of the channel to the stereo
mix bus. Channel-1 and 3 are routed to the left output, and channel-2 and 4
routed to the right. The LED indicator illuminates when the channel is being
routed to the mix bus.
17. A+B (CHANNEL-1 ONLY): This recessed switch allows both A and B
inputs to be active at the same time. When engaged the LED illuminates
and the A/B select switch is disabled and used to combine sources.
18. TRIM A and B: These 'set-n-forget' level controls are used to match the
input levels of the A and B sources for seamless audio switching.
19. A/B SELECT SWITCH and LEDs: Front panel control for toggling the A
and B inputs. LED indicators display which input source is active.
20. SIGNAL LED: Two signal present LED indicators under each trim control
illuminate when signal is detected at the A and B inputs. Used to confi rm
the source devices are connected and working before switching.
21. PFL SWITCH: This three position switch lets you listen to either the A or
B input through the headphone and auxiliary ¼" mono outputs. An LED
indicator illuminates when the PFL system is active.
22. LINK: This recessed switch ties the A/B switching to the next adjacent
channel. Allows more than one channel to be switched at the same time.
MIX BUS AND HEADPHONE DETAILS
23. BUS OUT: Controls the output level of the stereo mix bus. Features an on/
off switch and LED indicator.
24. MUTE INDICATOR: LED illuminates to show the SW4 is responding to the
MUTE command issued from the optional Radial JR•2 footswitch or DT2
desktop remotes. When active, all outputs except the front panel phones
and ¼" mono are muted.
25. PFL INDICATOR: Indicates the headphones are monitoring the PFL
system and one or more of the channel PFL switches is set to listen to its
A or B inputs.
26. PHONES: Level control and stereo ¼" output for the headphone amplifi er.
Lets you monitor the mix bus or any of the eight inputs via the PFL system.
27. MONO: ¼" headphone mix output used to connect a powered monitor,
guitar amplifi er or electronic tuner. The phones level control is used to
control the loudness.
28. XLR BUS OUTPUTS: Balanced XLR jacks output a stereo or mono mix
of the four input channels. Transformer isolated to prevent buzz and hum
caused by ground loops.
29. ¼" BUS OUTPUTS: Unbalanced ¼" jacks output a stereo or mono mix of
the four input channels. Transformer isolated to prevent buzz.
REAR PANEL DETAILS
30. CHANNEL OUTPUT: Transformer isolated balanced XLR outputs.
31. INPUT-A and B: Balanced A and B XLR inputs for microphone, instrument
or line-level signals. Wired to the AES standard with pin-1 ground, pin-2 hot
(+), and pin-3 cold (-).
32. XLR POWER: Locking 4-pin XLR is used to connect the external power
supply to the SW4.
33. FOOT SW JACK: ¼" jack used to connect the optional Radial JR•2 or
JR•2DT remote controls.
34. LINK JACK: ¼" jack connects to an additional SW4 and passes along
the switching and mute commands. By linking multiple SW4 units you can
switch eight or more A/B channels.
Radial Engineering Ltd.
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SW4 User Guide