Radial Engineering SB-48UB POWERBAR User Guide

FEATURES

1. ¼” OUT – Unbalanced ‘guitar level’ output used to feed a stage
amp or guitar effects pedals using standard coaxial cable.

2. XLR-M OUTPUT: Used to connect the mic signal to the mixing
console or preamp. Equipped with a capacitor to block other sourc­es of phantom power to prevent damage to your mic or direct box.

3. XLR-F INPUT : Used to connect your microphone to the StageBug
SB-48UB. Phantom power is generated inside the SB-48UB and in­jected into the mic capsule via the XLR-F connectors and mic cable.

4. +12/48V SWITCH: Used to change the phantom supply from
the standard +48 volts to +12 volts for speciality microphones.

5. POWER INPUT AND LED: The power jack accepts the included
15VDC/400mA power adapter . The LED illuminates when the power
supply is connected and the SB-48UB is active.

6. CABLE CLAMP: Used to lock down the power supply cable and
prevent accidental disconnection.

7. FULL-BOTTOM NO-SLIP P AD: This provides electrical isolation
and plenty of ‘stay-put’ friction to keep the SB-48UB in one place.

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STAGEBUG SB-48UB SPECIFICATIONS

Circuit type: Non-radiating phantom power supply
Number of channels: Single channel for one microphone
XLR connector: Lo-Z balanced microphone level output;

¼” connector: Hi-Z unbalanced instrument level output;

Phantom output: Switchable +48 / +12 volts DC
Power supply: 15VDC / 400mA external supply included

To meet the requirements of California Proposition 65, it is our responsibility to inform you of the following:

WARNING: This product contains chemicals known to the State of California to cause cancer ,
birth defects or other reproductive harm.

Please take proper care when handling and consult local government regulations before discarding.

TRANSFERABLE LIMITED WARRANTY

RADIAL ENGINEERING LTD. (“Radial”) warrants this product to be free from defects in material
and workmanship and will remedy any such defects free of charge according to the terms of this
warranty. Radial will repair or replace (at its option) any defective component(s) of this product
(excluding fi nish and wear and tear on components under normal use) for a period of three (3)
years from the original date of purchase. In the event that a particular product is no longer available,
Radial reserves the right to replace the product with a similar product of equal or greater value. In
the unlikely event that a defect is uncovered, please call 604-942-1001 or email service@radialeng.
com to obtain an RA number (Return Authorization number) before the 3 year warranty period
expires. The product must be returned prepaid in the original shipping container (or equivalent) to
Radial or to an authorized Radial repair center and you must assume the risk of loss or damage. A
copy of the original invoice showing date of purchase and the dealer name must accompany any
request for work to be performed under this limited and transferable warranty. This warranty shall
not apply if the product has been damaged due to abuse, misuse, misapplication, accident or as a
result of service or modifi cation by any other than an authorized Radial repair center.

THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE FACE HEREOF
AND DESCRIBED ABOVE. NO WARRANTIES WHETHER EXPRESSED OR IMPLIED, INCLUD­ING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANT ABILITY OR FITNESS
FOR A PARTICULAR PURPOSE SHALL EXTEND BEYOND THE RESPECTIVE WARRANTY
PERIOD DESCRIBED ABOVE OF THREE YEARS. RADIAL SHALL NOT BE RESPONSIBLE OR
LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSS ARIS­ING FROM THE USE OF THIS PRODUCT. THIS WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS, WHICH MAY VARY DEPENDING ON
WHERE YOU LIVE AND WHERE THE PRODUCT WAS PURCHASED.

AES standard pin-1=ground, pin-2=hot (+),
pin-3=cold (-)

tip=hot, sleeve=ground.

RADIAL ENGINEERING 3 YEAR

True to the Music

®

True to the Music

SB-48UB

POWERBAR

UNBALANCED/BALANCED

48V PHANTOM SUPPLY

USER GUIDE

Radial Engineering Ltd.
1588 Kebet Way, Port Coquitlam BC V3C 5M5
tel: [phone] • fax: [phone]
[e-mail] • www.radialeng.com

Radial Engineering Ltd.

SB-48UB

Phantom Supply SB-48UB® Phantom Supply

®

Radial Engineering Ltd.

StageBug SB-48UB™ User Guide • Part# R870 1214 00
© Copyright 2014 all rights reserved •
appearance are subject to change without notice.

Specifi cations and

www.radialeng.com

INTRODUCTION

CO

Thank you and congratulations on your purchase of the Radial
StageBug SB-48UB hi-Z to lo-Z signal converter and phantom power
supply. The StageBug SB-48UB is a unique device that makes it easy
to interface phantom powered microphones and direct boxes with
guitar-centric boxes of all types.

As most users will likely be familiar with the use of phantom power,
this manual has been kept short and to the point. We do however
suggest that you take a moment to give it a quick read so that you
familiarize yourself with the features that are built into the SB-48UB.
For more detailed information, please visit the FAQ section on the
Radial website. This is where we post questions and answers that
come from users after the product is released. If you do not fi nd an
answer, we invite you to send us an email at [e-mail] and
we will do our best to answer your query in short order.

The SB-48UB features a balanced microphone input with 48V phan­tom to power a condenser microphone. What makes it unique is that
it is equipped with both balanced XLR and unbalanced 1/4” outputs.
The unbalanced ¼” output enables the artist to connect a condenser
microphone directly to devices that do not supply phantom power
such as the Radial PZ-Pre instrument preamp, a guitar effects pedal,
or a stage amplifi er. Since both outputs may be used concurrently,
you can also send the dry mic signal directly to the PA system using
the XLR output.

CONDENSER

MIC

GETTING SET

Before connecting the StageBug SB-48UB make sure the sound system and/or
stage amplifi er is turned of f and all levels are set to zero. This will avoid loud tran-
sients caused by the phantom voltage that could damage equipment downstream
such as loudspeakers and tweeters. Do not turn up the volume until all connections
are made and the power supply is plugged in.

There is no power switch. As soon as you plug in the power supply, the SB-48UB
will spring to life and the front panel LED will illuminate. As an added safety feature,
the SB-48UB is equipped with a locking cable clamp that lets you secure the power
supply cable so that it will not accidentally be dislodged. After use, remember to
turn down the volume levels on the PA and/or stage amp before you disconnect
cables or the power supply.

USING THE 12/48V SWITCH

You can change the phantom power voltage from 48 volts to 12 volts using the
set & forget recessed 12/48V switch on the side of the SB-48UB. Use a small
screwdriver to access the switch.

When the switch is in the outward position, the SB-48UB will supply 48 volts of phan­tom power. This is the normal setting for the majority of condenser microphones.
There are however, some miniature clip-on mics that are designed for use with 12
volt supplies. Pushing the 12/48V switch inward will supply the mic with 12 volts
of phantom power. Check the microphone manufacturer’s specifi cation to ensure
this switch is set accordingly.

MAKING CONNECTIONS

Connect the source microphone to the SB-48UB’s balanced XLR
input.

There are two audio outputs to choose from. The unbalanced ¼”
output is designed for guitar type devices such as effects pedals or
stage amplifi ers. It employs a step-up transformer to optimize the
impedance and signal level.

CONDENSER MIC

Using the unbalanced ¼” output with an instrument amplifi er.

AMP

The balanced XLR male output follows the AES standard with pin­1 ground, pin-2 (+), pin-3 (-). This would be used when the PA or
recording system cannot deliver its own phantom power to your
condenser microphone.

CONDENSER MIC

PA SYSTEM

Using the balanced XLR output to feed the PA system.

Once all of the connections are made and the power is on, slowly
turn up the volume to test and make sure everything is working. It
is good practice to always test at low volumes as this can further
avoid loud transients from harming your audio system should a

PA SYSTEM

Radial Engineering Ltd. Radial Engineering Ltd. Radial Engineering Ltd.

AMP RADIAL PZ-PRE

SB-48UB

Phantom Supply SB-48UB® Phantom Supply SB-48UB® Phantom Supply

®

connection be faulty.