Radial Engineering SB-5W WallDI User's Guide

FEATURES

®

True to the Music

®

True to the Music

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1. LEVEL: Let’s you adjust the volume level of your source
device.

2. MONO: Mixes the left and right inputs together and
outputs a mono signal to the PA system.

3. LIFT: Disconnects the audio ground of both channel outputs
to eliminate hum and buzz created by ground loops.

4. 3.5MM INPUT: Stereo mini-phone jack lets you connect
mobile devices such as laptop computers, MP3 players
or tablets. Plugging in here will deactivate the RCA
connectors.

5. RCA INPUT: A stereo pair of RCA inputs lets you connect
a wide range of consumer electronics such as CD/DVD
players and digital players/recorders.

6. STEEL ENCLOSURE COVER: Protects the audio circuit
from electro-magnetic and radio interference.

7. HEAVY DUTY FRAME: The PCB and cover mount to a
ridgid 14-guage steel L-frame that’s powder-coated for
long life.

8. OUTPUT TERMINALS: Balanced left and right mic-level
outputs connections are made via two screw-down
terminals.

9. TIE-WRAP HOLD-DOWNS: Slots cut in the steel frame
for tie-wraps (included) help secure the cable and provide
strain relief for the connectors.

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RADIAL SB5W WALL MOUNT DIRECT BOX SPECIFICATIONS

Frequency response �����������������������������������������20Hz to 18kHz +/- .5dB

Total harmonic distortion ����������������������������������0.01% THD 20Hz to 20kHz

Stereo input ������������������������������������������������������Unbalanced high-Z -10dB

Input connections ����������������������������������������������RCA and 3.5mm TRS

Stereo output ����������������������������������������������������AES standard balanced 600-Ohm,

mic-level, pin-2 hot

Output connection ���������������������������������������������Screw terminals

Input level����������������������������������������������������������Variable from innity

Power requirement��������������������������������������������None, completely passive

Mounting �����������������������������������������������������������Fits single gang electrical junction box

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.

RADIAL ENGINEERING 3 YEAR

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 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 [e-mail] to obtain a 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 modi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 MERCHANTABILITY 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.

SB5W

Wall Mount

Direct Box

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.

Radial Engineering Ltd.

SB5W Direct Box

SB5W™ User Guide - Part No. R870 1218 00 • © Copyright 2014 all rights reserved.

Specications and appearance are subject to change without notice.

SB5W Direct Box™

™

www.radialeng.com

Thank you for purchasing the Radial SB5W stereo direct box. This innovative
direct box is designed to t a standard single-gang electrical wall plate and
provides the A/V integrator with an elegant means of connecting a stereo
audio source such as a laptop computer, CD player or tablet to a professional
audio system. Although the SB5W 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 best use the Radial SB5W direct box and get the most out of it.

CONNECTIONS

Starting with the left channel terminal, push the BLACK wire into the negative
connection and screw down tight using a small slotted screwdriver. Insert the
other color wire (sometimes white or red) into the positive connection and screw
it down tight. The drain wire or shield is inserted into the ground connection and
tightened. Repeat for the right channel.

USING THE SB5W DIRECT BOX

Before connecting a device to the SB5W,
turn the audio level control fully counter­clockwise to the off position. This will help
avoid loud transients that can damage
more sensitive components like tweeters
and startle your audience.

INSTALLATION

The SB5W ts a standard single gang electrical wall plate and should be
installed in accordance with the electrical codes in your region. It is the

responsibility of the installing contractor to comply with electrical codes
and regulations with regards to installing and terminating the SB5W. The

SB5W is classied as a low voltage device and should never be installed in
the same electrical junction box alongside high-voltage class-1 electrical
power devices. Please consult your local electrical authority before installing.

The SB5W is completely passive and no power source is required. Signal
connections are made using standard twisted pair audio cable. This usually
comes in a shielded format with two insulated conductors (18AWG to 26AWG)
and a ground conductor often called the drain wire. The cable itself should
comply with all electrical codes as regulated in your area.

WHITE OR RED (+)

GROUND (DRAIN)

BLACK (-)

Shielded twisted pair audio cable with drain wire.

FOIL SHIELD

Run two twisted pair cables from the PA mixer/amplier to the location where
the SB5W is to be installed. Mark one of the cables with tape or magic marker.
This will help to indicate one cable as the left channel. Pull about 20cm (8”)
of cable through the electrical junction box to allow easy manipulation while
installing. Strip back the cable insulation by 1cm (½”) and tin the bare wire
ends with solder to prevent corrosion.

Next, remove the protective metal cover from the SB5W using a Phillips
screwdriver and locate the audio output terminals on either side and labeled
‘LEFT’ and ‘RIGHT’. The output terminals are balanced and have three
screw-down connections, one labeled negative (-); another labeled ground
(G); and a third labeled positive (+).

Left output Right output

Tie-wrap
inserted into
hold down slots

The included tie-wraps are used with hold-down slots cut into the frame to secure
the twisted pair cable and provide strain relief. Once secure, replace the cover
and t into the electrical junction box.

You will need to terminate the cables at the mixer/amplier using the same polarity.
The following diagrams show balanced terminations for standard XLR and ¼”
TRS phone connectors.

TIP (+)

RING (-)

SLEEVE (G)

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3

- G +

SHIELD/DRAIN

XLR and ¼” TRS Balanced terminations

SHIELD/DRAIN

The SB5W’s output is mic level and therefore should be connected to a microphone
preamp input. At the mixer/amplier, connect the left and right cables from the SB5W
to two mic inputs on the PA mixer/amplier system. If there is only one mic input
available or if the PA system operates in mono you can connect the left channel and
set the SB5W to mono mode by depressing the MONO switch on the front panel.

The SB5W features stereo RCA and 3.5mm TRS input jacks to connect an
unbalanced audio source. The RCA jack allows consumer electronics like
CD/DVD players to connect to the PA system while the 3.5mm jack works
well with mobile devices like smart phones and tablets.

After connecting your device, start playback and slowly turn up the level
control on the SB5W to a comfortable listening volume. Be aware your device
may also have its own volume control that you may need to adjust. It is very
difcult to overload the SB5W, however it is possible to overload the input
on the mixer/amplier. If you hear distortion, turn the level control down or
adjust the volume on your device.

USING THE GROUND LIFT

Sometimes when connecting your device to the PA system via the SB5W
direct box you can encounter noise like hum and buzz caused by ground
loops. If you encounter noise after connecting depress the ground LIFT switch
on the front panel. This disconnects the signal ground between the source
device and the PA system eliminating ground loop noise. The LIFT switch is
recessed to prevent tampering. Use a small screwdriver to access the switch.

USING THE MONO SUM

The MONO switch on the front panel sums the left and right inputs together.
When this switch is fully depressed the SB5W will output the same mono
signal at both screw terminal outputs. This can be used to connect a stereo
device like a CD/DVD player to a mono only sound system or when only
one input at the mixer is available. The MONO switch is recessed to prevent
tampering. Use a small screwdriver to access the switch.

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

SB5W Direct Box

SB5W Direct Box™ SB5W Direct Box™

™