Wharfedale Pro SL424 User Manual
SL424USB Studio/Live Mixer
OPERATING MANUAL AND USER GUIDE
www.wharfedalepro.com
OPERATING MANUAL AND USER GUIDE
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IMPORTANT WARNINGS & SAFETY INSTRUCTIONS
1. Read these instructions
2. Follow all instructions
3. Keep these instructions
4. Heed all warnings
5. Do not use this apparatus near water
6. Clean only with dry cloth.
7. Do not block an y ventilation openings. Install in a cc or da nc e with the manufacturer ’s
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including ampliers) that produce heat.
9. Do not defeat the safety purpose of a polarised or grounding plug. A polarised plug has two
blades with one wider than the other. A grounding plug has two blades and a third grounding
blade. The wide blade or the third blade is provided for your safety. If the provided plug does
not t into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched, particularly at the plug, receptacle and
or the point where it exits from the apparatus.
11. Only use attachments/accessories specied by the manufacturer.
12. Only use a stand, tripod, bracket or rack specified by the manufacturer, or sold with the
apparatus. When a rack is used, use caution when moving the rack and apparatus combination
to avoid tip-over or injury.
13. Unplug the apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualied personnel. Servicing is required when the apparatus has been
damaged in any way including but not limited to power supply cord or plug damage, liquid
ingress, foreign objects in the chassis, exposure to rain/moisture or impact damage. In addition
the unit must be serviced when you experience any abnormal operation.
15. CAUTION: These servicing instructions are for use by qualified service personnel only. To
reduce the risk of electric shock, do not attempt to perform any servicing other than that
contained in the operating instructions unless you are qualied to do so. In addition opening the
casing will result in your warranty becoming null and void.
16. Do not install this apparatus in a conned space such as a book case or similar unit. Good
ventilation should be maintained around the apparatus. Any vents, air-inlets or fans should not
be obstructed by objects such as paper, table-cloths, curtains etc.
17. WARNING: To reduce the risk of re or electric shock, do not expose the apparatus to rain or
moisture. The apparatus should not be exposed to dripping or splashing and objects lled with
liquids, such as vases, should not be placed on the apparatus.
18. WARNING: The mains plug/appliance coupler is used as a disconnect device, the disconnect
device shall remain readily operable.
SL424USB
19. The lightning ash with arrowhead symbol within an equilateral triangle is intended to alert the
user to the presence of non-insulated “dangerous voltage” within the product’s enclosure that
may be of sufcient magnitude to constitute a risk of electric shock.
- Warning: To reduce the risk of electric shock, do not remove the cover (or back) as there are
no user-serviceable parts inside. Refer servicing to qualied personnel.
- The exclamation point within an equilateral triangle is intended to alert the user to the
presence of important operating and maintenance instructions in the literature accompanying
the appliance.
20. (Protective earthing terminal) The apparatus should be connected to a mains socket outlet
with a protective earthing connection.
ATTENTION: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
Multi-Channel Mixer
21. Correct Disposal of this product. This marking indicates that this product should not be
disposed with other household wastes throughout the EU. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, recycle it responsibly to
promote the sustainable reuse of material resources. To return your used device, please use
local return and collection systems or contact the retailer where the product was purchased.
They can take this product for safe environmentally friendly recycling.
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OPERATING MANUAL AND USER GUIDE
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TABLE OF CONTENTS
1. Important Warnings and Safety Instructions ......................................... 1
2. Introduction ........................................................................................... 4
3. About the SL424USB Mixer .................................................................. 4
4. SL424USB Overview ............................................................................ 4
5. Features ............................................................................................... 5
6. SL424USB Front Panel ........................................................................ 6
7. Wiring Example .................................................................................... 6
8. Setting Up ............................................................................................. 7
9. Connections/Wiring .............................................................................. 7
10. USB Interface ...................................................................................... 9
11. Wiring Diagram .................................................................................. 10
12. Dimensional Drawings ....................................................................... 11
13. Block Diagram ................................................................................... 12
14. Specications .................................................................................... 13
15. Warranty ............................................................................................ 13
SL424USB
INTRODUCTION
The Wharfedale Pro SL424USB Professional Mixer is the result of many years of experience in the
use, design and manufacture of professional sound reinforcement products. We take great pride in
engineering and building every Wharfedale Pro product and wish to thank you for entrusting us with
your sound.
From the time Gilbert Briggs built his first loudspeaker in 1932, to the present, Wharfedale
Professional products have maintained the same standard of quality in components, workmanship
and performance. Wharfedale are one of a few present day manufacturers that design, engineer
and build all of their own electronics.
Please take a few minutes to read this manual completely in order to ensure that you get the most
out of your SL424USB Mixer.
Multi-Channel Mixer
ABOUT THE SL424USB MIXER
The SL424USB is a high quality mixer designed to provide the best sound and features in a
compact package. It is designed to provide transparent and accurate mixing capability in an easy to
use package.
The mixer features 4 microphone/line inputs (channels 1-4). Each of these channels features low,
mid and high EQ, balanced inputs, and a full duplex USB playback and recording interface.
The stereo channels (channels 5/6 and 7/8) allow you to mix external devices into the show with
ease.
Easy to transport and quick to set up, the SL424USB Mixer is the ideal choice for the serious
professional.
SL424USB OVERVIEW
The SL424USB Mixer is a full featured multi-channel mixer designed to deliver the highest quality
sound for the best value. It is an ideal solution when you are looking for a high quality, cost effective
compact audio mixer for personal studio and live applications.
This 8-channel model was built to suit a variety of applications, from desktop recording and
AV production to smaller live performances. The Wharfedale SL424USB mixer offers a no-
nonsense mixing platform for use anywhere quality sound is required. The layout of the controls is
straightforward, so rst time users can be up and mixing in no time. Features like Mic and line inputs
and outputs, accurate 6-segment meters, Stereo Effects returns, Aux sends, Control Room outputs
for Left and Right Channels (to go to a separate amplier, perhaps in a recording control room) 3
band EQ, phantom power as well as a 1/4” headphone output provide added mix and monitoring
exibility.
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