Radial Engineering SB-15 Tailbone User's Guide
StageBug™ SB-15 Tailbone
USER GUIDE
Thank you for purchasing your very own StageBug SB-15 Tailbone voltage converter
with active instrument buffer! We are excited about producing a personal device that
can fit in your instrument case and be ‘at the ready’ anytime you need to power your
Tonebone pedals with common 9 volt power bricks. Although the SB-15 is designed
to be plug & play easy to use, please take a minute to read this short manual. It will
give you insight on how to get the most out of your SB-15 Tailbone.
OVERVIEW
The Radial StageBug SB-15 Tailbone is a combination voltage converter and buffer
that enables the user to power any Tonebone pedal from two 9 volt DC power
supplies. It is designed to work with standard 9 volt ‘center-negative’ pedal power
supplies that feature multiple power outputs. The SB-15 Tailbone also features a built
in instrument buffer with DRAG
15V OUT: Power
output for Radial
Tonebone pedal.
¼” BUFFER OUT:
High-Z buffered
instrument output.
USING THE VOLTAGE CONVERTER
Before making connections, it is good practice to turn your amp’s volume down to
ensure loud transients are not passed on to sensitive loudspeakers. Like the majority
of guitar pedals, the SB-15 uses standard 2.1mm barrel jacks for the DC
connections. Connect two DC cables from your power brick to the SB-15’s IN-1 &
IN-2 jacks. Next, connect a DC cable from the 15 volt OUT jack to your Tonebone
pedal and you’re set to go.
12AX7
TUBE
TM
DRIVE
1
HIGH LOW
BRIGHT
FLAT
DARK
TOP END
TRIMODE
DRIVE-2
FILTER
HIGH
12dB
MED
7dB
LOW
OUT
DRIVE GAIN
MID BOOST
2
1
TRUE BYPASS
LEVEL-2
15VDC · 400mA
CLASSIC DISTORTION
INSERT
2
OUTPUT
LEVEL-1
TOGGLE
Load correction
®
DRIVE-1
CH.1 INTERMEDIATE DRIVE
Made in Canada
INPUT
™
control.
DRAG
for the buffer
™
:
9V IN1: Accepts 9 volt
center-negative power
supply.
9V IN2: Accepts a
second 9 volt power
supply.
¼” BUFFER IN: High-Z
instrument input for
guitar and bass.
DC OUTPUTS
9V9V9V9V
FILTER LEVEL DRIVE
FILTER LEVEL DRIVE
9V Pedals15V Tonebone Pedal
USING THE INSTRUMENT BUFFER
When driving very long cables or a chain of true bypass effect pedals, you may notice
your guitar sounds dull compared to a straight connection to your amp with a short
cable. This high frequency loss is caused by high capacitance and resistance from
the cables in your signal chain and the various connections through your pedals.
Insert the SB-15 buffer using standard ¼” cables. Placing it ahead of these loads will
restore the clarity and impact of your instrument for a much more natural tone.
INSERT
2
OUTPUT
CH.1 INTERMEDIATE DRIVE
TOP END
DRIVE GAIN
MID BOOST
2
1
Made in Canada
1
TRIMODE
INPUT
TOGGLE
TRUE BYPASS
®
DRIVE-1
DRIVE-2
LEVEL-2
LEVEL-1
HIGH LOW
FILTER
12AX7
FILTER LEVEL DRIVEFILTER LEVEL DRIVEFILTER LEVEL DRIVE
TUBE
15VDC · 400mA
TM
HIGH
BRIGHT
12dB
DRIVE
MED
FLAT
7dB
LOW
DARK
OUT
CLASSIC DISTORTION
True bypass pedals SB-15 Buffer
FILTER LEVEL DRIVE FILTER LEVEL DRIVE
Amp
Amp 1
FILTER LEVEL DRIVE FILTER LEVEL DRIVE
FILTER LEVEL DRIVE FILTER LEVEL DRIVE
Amp 2
Drive a chain of true bypass pedals and a long cable to your amp.
Electronic Tuner
AB/Y Switcher
SB-15 Buffer
Drive two amps and a tuner through a Radial BigShot AB/Y switcher.
USING THE DRAG CONTROL
Radial’s DRAG™ load correction allows you to dial in just the
right amount of loading for your pickups to create the same
impedance relationship as when plugging directly into your
DRAG
™
amplifier. Start with the DRAG™ control set to the 12 o’clock
position. Turning it clockwise will brighten the tone while
turning it counter-clockwise will darken it. Strum a chord and
BrighterDarker
slowly turn the DRAG control until the tone sounds right to
you. Use your guitar pick like a screwdriver to easily adjust
the recessed control.
To view the 3-year transferable warranty details and
product specifications please visit www.radialeng.com
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