KL-8
Keyboard Mixing Station
True to the Music
Radial Engineering Ltd.
1588 Kebet Way, Port Coquitlam BC V3C 5M5
tel: 604-942-1001 • fax: 604-942-1010
www.radialeng.com
email: info@radialeng.com • web: www.radialeng.com
Specications and appearance are subject to change without notice.
Copyright © 2019 Radial Engineering Ltd.
Owner’s Manual
www.radialeng.com
Radial KL-8 Owner’s Manual
Keyboard Mixing Station
Table of Contents
Overview..................................................................................................2
Features ..................................................................................................3-4
Getting Started ........................................................................................5
Headphones and Cue Switches ..............................................................6
Stereo Insert for Volume Pedals & Eects ..............................................6
Auxiliary Send and Receive.....................................................................7
Aux Return Assign Switch .......................................................................7
Digital Connections..................................................................................8
Switching Between Redundant USB Devices .........................................8
Recording Mode vs. Live Mode ...............................................................9
MIDI In and Out .......................................................................................10
Linking Multiple KL-8 units.......................................................................11
Specications ..........................................................................................12
Warranty .................................................................................................. Back Cover
INTRODUCTION
Thank you for purchasing the KL-8, a powerful rackmount mixer specically designed to provide
complete control over a professional keyboard setup, both on-stage and in the studio.
We encourage you to read through this manual to familiarize yourself with the many features available
on the KL-8, allowing you to get the most out of this versatile mixing station. If you have any questions,
please visit www.radialeng.com to nd more resources including frequently asked questions, how-to
videos, and updated drivers for use with Windows computers. You can also submit your own questions
if you are still in need of additional information and we will do our best to respond promptly.
1
Specications and appearance are subject to change without notice.
Copyright © 2019 Radial Engineering Ltd.
www.radialeng.com
True to the Music
OVERVIEW
The KL-8 is a powerful mixing station created with pro keyboard players in mind, with a number of features designed
specically to streamline and enhance any keyboard setup.
You can connect up to four keyboards in mono or stereo, each with their own with level controls and LED indicators,
along with the ability to bring them in and out of the signal path to keep noisy keyboards muted until they are needed.
A stereo aux send/receive channel is available to feed rackmount reverbs and delays or eects pedals. It can also
be used as an additional input for a fth keyboard, or recongured to allow an alternative audio source such as a
click track to feed the headphones and stage monitors.
Both the Main outputs and Monitor outputs are provided over transformer-isolated balanced XLRs, with ground lift
switches to eliminate hum and buzz from ground loops. The Main outputs are also transformer-isolated to further
reduce noise. Both sets of outputs can also be summed to mono for use with systems that have limited channel
availability.
Dual 1/4” headphone outputs are also included for local monitoring and testing. A cue system allows any keyboard
input to be muted from the overall mix and fed directly to the headphones to silently check patch settings without
feeding signal to the audience.
The KL-8 is also a powerful digital interface, with MIDI and USB connections that make it easy to control a laptop
soft-synth, utilizing high quality 24bit/192kHz digital audio converters. Redundant USB connections mean that you
can have a backup laptop plugged in and ready to go should your primary source fail; this is especially helpful for
keyboard players who are also controlling playback for backing tracks during the performance. An optional JR1-L
remote footswitch can be employed to switch between the USB inputs at a moments notice.
Finally, stereo insert points on the KL-8 allow a single volume pedal to control all of your keyboard outputs, and
a link feature can be used to connect multiple units together and expand the KL-8 inputs to suit even the largest
keyboard rigs.
Utilizing the many connectivity options available on the KL-8
Radial Engineering Ltd. KL-8™ Owner’s Manual
2
True to the Music
MAIN OUT: Used to set the KL-8 output
level to the PA system. ON activates these
outputs, MONO sums the left and right
channels together.
¼” TRS
PHONES:
headphone outputs
with level control.
MONITOR OUT:
Used to adjust the
output level feeding a
powered monitor on
stage.
AUX RETURN:
Adjusts the level of the
aux return inputs.
CH-4/USB INPUT: Additional
controls for a fouth keyboard
and audio over USB from a
laptop.
CUE: Used for silent auditioning
through the headphones, muting
the channel from the Main and
Monitor outputs.
USB SELECT:
Switches between
primary and backup
USB connections.
AUX SEND:
Adjusts the amount
of signal that each
keyboard feeds to
the aux outputs.
VU LEDS: Visual
indicators to show
when signal is pres-
ent or clipping.
INPUTS 1-3: Input chan-
nels with individual level
control for three mono or
FRONT PANEL FEATURES
3
Radial Engineering Ltd. KL-8™ Owner’s Manual
stereo keyboards.
ON: Activates the input
channel. Can be used to
keep noisy keyboards out
of the signal path until they
are needed.
True to the Music
AUX SEND/RECEIVE:
1/4” jacks for connecting to
an external eects device.
INPUT CH 1-4: Stereo
inputs used to connect
the analog outputs of your
keyboards to the KL-8.
INSERT: 1/4” TRS connec-
tions allow you to connect
a volume pedal or a stereo
eects device and have it
aect all input channels.
MONITOR OUTPUTS:
Balanced XLR outputs used to
feed a pair of powered speakers
for on-stage monitoring.
MAIN OUTPUTS: Balanced
and transformer-isolated XLR
outputs are used to feed the
PA system.
USB ASSIGN: Changes the routing of
the audio to and from the USB connec-
tions for use on stage (LIVE) or in the
studio (RECORDING).
LINK: 1/4” TRS
connections allow
multiple KL-8’s to
be linked together
for larger keyboard
setups.
REMOTE INPUTS:
Connect the optional
JR1-L remote footswitch
to select the active USB
input or activate / deac-
tivate the aux send and
receive.
USB: Redundant USB
connections interface with
Mac or PC computers for
high quality digital audio
playback.
MIDI: n and out
connections for easy
integration with MIDI
REAR PANEL FEATURES
Radial Engineering Ltd. KL-8™ Owner’s Manual
controllers.
POWER: Locking connection
for external switching power
supply.
4
Loading...