LTO S-8 User Manual

User's Manual

LTO

R

www.altoproaudio.com

Version 2.0 Dec. 2002

English

8-CHANNEL MIXING CONSOLE

S-8

1

SAFETY RELATED SYMBOLS

CAUTION

RISK OFELECTRIC SHOCK

DO NOTOPEN

Protective Grounding

Make sure to connect the protective grounding to prevent any
electric shock before turning ON the apparatus.

Never cut off the internal or external protective grounding wire
or disconnect the wiring of protective grounding terminal.

The symbol is used to indicate that some hazard­ous live terminals are involved within this apparatus,
even under the normal operating conditions.

The symbol is used in the service documentation
to indicate that a specific component shall be only
replaced by the component specified in that docu­mentation for safety reasons.

Protective grounding terminal.

Alternating current /voltage.

Hazardous live terminal.

ON: Denotes the apparatus is turned on.

OFF: Denotes the apparatus is turned off, because it uses

the single pole switch, be sure to unplug the AC power to
prevent any electric shock before you proceed with your
service.

WARNING: Describes precautions that should be
observed to prevent the danger of injury or death to
the user.

CAUTION: Describes precautions that should be
observed to prevent danger of the apparatus.

WARNING

Power Supply

Ensures the source voltage matches the voltage of the
power supply before turning ON the apparatus.
Unplug this apparatus during lightning storms or when
unused for long periods of time.

External Connection

The external wiring connected to the output hazardous live
terminals requires installation by an instructed person, or the
use of ready-made leads or cords.

Do not Remove any Cover

There are maybe some areas with high voltages inside,
to reduce the risk of electric shock, do not remove any
cover if the power supply is connected.
The cover should be removed by qualified personnel
only.
No user serviceable parts inside.

Fuse

To prevent a fire, make sure to use fuses with specified stan­dard (current, voltage, type). Do not use a different fuse or
short circuit the fuse holder.
Before replacing the fuse, turn OFF the and dis-apparatus
connect the power source.

Operating Conditions

This apparatus shall not be exposed to dripping or spl­ashing and that no objects filled with liquids, such as
vases, shall be placed on this apparatus.
To reduce the risk of fire or electric shock, do not expose
this apparatus to rain or moisture.
Do not use this apparatus near water.
Install in accordance with the manufacturer's instructions.
Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including amp­lifiers) that produce heat.
Do not block any ventilation openings.
No naked flame sources, such as lighted candles, should
be placed on the apparatus.

IMPORTANT SAFETY INSTRUCTIONS

Read these instructions.

Heed all warnings.

Follow all instructions.
Keep these instructions.

Only use attachments/accessories specified by the manu­facturer.

Power Cord and Plug

Do not defeat the safety purpose of the polarized or
grounding type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety.
If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched
particularly at the plug, convenience receptacles, and
the point where they exit from the apparatus.

Cleaning

When the apparatus needs a cleaning, you can blow off
dust from the apparatus with a blower or clean with a rag
etc. Don't use solvents such as benzol, alcohol, or other
fluids with very strong volatility and flammability for cleaning
the apparatus body.
Clean only with a dry cloth.

Servicing

Refer all servicing to qualified personnel. To reduce the
risk of electric shock, do not perform any servicing other
than that contained in the operating instructions unless
you are qualified to do so.
Servicing is required when the apparatus has been dam­aged in any way, such as the power supply cord or plug
is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been
dropped.

2

PREFACE

Dear Customer:

Thanks for choosing LTO S-8 8-Channel Mixing Console and thanks for choosing one of the results of LTO AUDIO
TEAM's work and researches.

For our LTO AUDIO TEAM, music and sound more than a job...are first of all passion and let us say...our obsession!
We have been designing professional audio products for a long time in cooperation with some of the major brands in
the world in the audio field.

The LTO line presents unparalleled analogue and digital products made by Musicians for Musicians in our R&D centers
in Italy, Netherlands, United Kingdom and a large range of state of the art algorithms which have been developed by
our Software Team for the last 7 years.

Because we are convinced you are the most important member of LTO AUDIO TEAM and the one confirming the
quality of our job, we like to share with you our work and our dreams paying attention to your suggestions and your
comments.

Following this idea we create our products and we will create the new ones! From our side, we guarantee you and we
will guarantee you also in future the best quality, the best fruits of our continuous researches and the best prices.

Our LTO S-8 8-Channel Mixing Console has 5 Mono (these are provided with Ultra Low Noise microphone pre­amplifiers and Phantom Power at +48 Volt) and 2 stereo input channels, and each of them is provided with a 3 bands
graphic equaliser for bass, middle and treble controls, as well as 2 Auxiliary Bus. There is even a stereo input available
to be assigned directly to the main MIX or to the other outputs: Control Room and Headphone. So, in total you have
14 inputs on you S-8.

Nothing else to add, but we would like to thank all the people that made the LTO S-8 8-Channel Mixing Console a
reality available to our customers, and thank our designers and all the LTO staff, people who make possible the
realization of products containing our idea of music and sound and are ready to support you, our customers, in the
best way, conscious that you are our most important member.

Thank you very much

LTO AUDIO TEAM

3

TABLE OF CONTENTS

1.INTRODUCTION.........................................................................................................................................................4

2.FEATURES.................................................................................................................................................................5

3.READY TO START?....................................................................................................................................................6

4.CONTROL ELEMENTS.............................................................................................................................................7

4.1 The mono MIC/LINE channels.......................................................................................................................8

4.2 INPUT LEVEL setting...................................................................................................................................8

4.3 LOW CUT FILTER.........................................................................................................................................8

4.4 STEREO INPUT ............................................................................................................................................9

4.5 The 3 BAND EQUALISER.............................................................................................................................9

4.6 AUX SENDS.................................................................................................................................................10

4.7 PAN...............................................................................................................................................................10

4.8 PEAK............................................................................................................................................................10

4.9 LEVEL...........................................................................................................................................................10

4.10 INSERT.........................................................................................................................................................10

4.11 MASTER SECTION ....................................................................................................................................11

-MAIN MIX LEVEL

-LED METER

-2 TRACK signal path

-AUX RETURN

-PHONES/CONTROL ROOM

-PHANTOM

-POWER

-2-TRACK IN/OUT

-STEREO AUX RETURN

4.12 REAR PANEL ..............................................................................................................................................13

-POWER

-PHANTOM

-AC INLET WITH FUSE HOLDER

-MAIN MIX OUTPUT

5.INSTALLATION AND CONNECTION..........................................................................................................................14

6.FOR THE EXPERTS WHO WANT TO KNOW MORE................................................................................................17

7.SYSTEM BLOCK DIAGRAMS..................................................................................................................................18

8.TECHNICAL SPECIFICATION...................................................................................................................................19

9.WARRANTY................................................................................................................................................................20

-CONTROL ROOM OUTPUT

-AUX SEND 1 AND 2

-PHONES

4

Your S-8 is a 8-channel mixer and it is one of the most popular compact mixing consoles in the world. In fact it has
been sold already in tents of thousands of units worldwide. Despite its compact dimensions, great performances and
sound quality are insured thanks to the specification of the components used and the building quality.

Your S-8 is packed with features that can not be found in other consoles of its size: 5 Mono (these are provided with
Ultra Low Noise microphone preamplifiers and Phantom Power at +48 Volt) and 2 stereo input channels are provid­ed, and each of them is provided with a 3 bands graphic equaliser for bass, middle and treble controls, as well as 2
Auxiliary Bus. There is even a stereo input available to be assigned directly to the main MIX or to the other outputs:
Control Room and Headphone. So, in total you have 14 inputs on you S-8.

Your S-8 is very easy to operate but we advise you to go through each Section of this Manual carefully. In this way
you will get the best out of your S-8.

1. INTRODUCTION

5

5 Input for Microphone and line provided with balanced 1/4" jack and XLR. Channel 5 features stereo Line input

1 additional input for Line level signal provided with balanced TRS 1/4" jacks

The Microphone preamplifiers are Ultra Low Noise and are provided with +48 Volt Phantom Power

1 pre-fader and 1 post-fader Auxiliary bus

Main Output is balanced to provided optimum sound quality. Control Room and headphone output are unbalanced

type

Precise 3 bands graphic equaliser (Bass, Middle and treble) on each input channel

Single Led indicating signal Peaks on each input channel and Low-cut filter on all mono MIC channels

2-track input featuring RCA sockets assignable alternatively to each output group

12 Segments Led Meter for optimum reading of the output signal

Balanced Outputs both XLR and TRS 1/4" jack

2. FEATURES

Your S-8 is provided with 4 mono Line/Mic input, 1 stereo Line/Mic input and an additional stereo Line input to be used
with keyboards, Midi Instruments, etc. We have even included a 2-track input/output for recording and playback. Ultra
low noise microphone preamplifiers, 3 bands eq on all input channels, pre and post Auxiliary bus and phantom power
complete the picture.

6

3. READY TO START?

3.1 Please check the AC Voltage available in your Country before connecting your S-8 to the AC socket.

3.2 Be sure that the main power switch is turned off before connecting the Mixer to the AC socket. Also, you should
make sure that all Input and Output Controls are turned down. This will avoid damages to your speakers and avoid

excessive noise.

3.3 Before turning on the S-8 you shall connect it to a power amplifier and turn-on the mixer BEFORE the power amp­lifier. Once you have finished your working session you shall turn the mixer off AFTER the power amplifier.

3.4 Before disconnecting the S-8 always turn-off the Power switch.

3.5 Do not use coke, beer or solvents to clean your S-8. A dry and clean cloth will be OK.