Alto Professional MS8MA User Manual

R

LTO

OWNER'S MANUAL

MS MONITOR SPEAKER ENCLOSURES

ACTIVE MODELS

www.altoproaudio.com

Version 1.1 SEPTEMBER 2007

English

IMPORTANT SAFETY INSTRUCTION

CAUTION

RISK OFELECTRIC SHOCK

DO NOTOPEN

TO REDUCE THE RISK OF ELECTRIC SHOCK
PLEASE DO NOT REMOVE THE COVER OR
THE BACK PANEL OF THIS EQUIPMENT.
THERE ARE NO PARTS NEEDED BY USER
INSIDE THE EQUIPMENT. FOR SERVICE,
PLEASE CONTACT QUALIFIED SERVICE
CENTERS.

This symbol, wherever used, alerts you to the

presence of un-insulated and dangerous voltages
within the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.

This symbol, wherever used, alerts you to
important operating and maintenance instructions.

Please read.

Protective Ground Terminal
AC mains (Alternating Current)

Hazardous Live Terminal
ON: Denotes the product is turned on.
OFF: Denotes the product is turned off.

CAUTION

Describes precautions that should be observed to
prevent damage to the product.

1.

Read this Manual carefully before operation.
Keep this Manual in a safe place.

2.

Be aware of all warnings reported

3.

with this symbol.

4.

Keep this Equipment away from water and
moisture.

5.

Clean it only with dry cloth. Do not use
solvent or other chemicals.

6.

Do not damp or cover any cooling opening.
Install the equipment only in accordance with
the Manufacturer's instructions.

Power Cords are designed for your safety. Do

7.

not remove Ground connections! If the plug
does not fit your AC outlet, seek advice from
a qualified electrician. Protect the power
cord and plug from any physical stress to
avoid risk of electric shock. Do not place
heavy objects on the power cord. This could
cause electric shock or fire.

Unplug this equipment when unused for long

8.

periods of time or during a storm.

Refer all service to qualified service personnel

9.

only. Do not perform any servicing other than
those instructions contained within the
User's Manual.

To prevent fire and damage to the product,

10.

use only the recommended fuse type as
indicated in this manual. Do not short-circuit
the fuse holder. Before replacing the fuse,
make sure that the product is OFF and
disconnected from the AC outlet.

WARNING

To reduce the risk of electric shock
and fire, do not expose this equipment
to moisture or rain.

Dispose of this product should
notbeplacedinmunicipalwaste
and should be separate collection.

MovethisEquipmentonlywithacart,

11.

stand, tripod, or bracket,
specified by the
manufacturer, or
sold with the
Equipment. When
a cart is used, use
caution when
moving the cart /
equipment
combination to
avoid possible
injury from tip-over.

12.

Permanent hearing loss may be caused by
exposure to \ extremely high noise levels.
The US. Government's Occupational Safety
and Health Administration (OSHA) has
specified the permissible exposure to noise
level.
These are shown in the following chart:

HOURS X DAY

8
6
4
3
2
1,5
1
0,5
0,25 or less

According to OSHA, an exposure to high SPL in
excess of these limits may result in the loss of
heat. To avoid the potential damage of heat, it is
recommended that Personnel exposed to
equipment capable of generating high SPL use
hearing protection while such equipment is
under operation.

The apparatus shall be connected to a mains
socket outlet with a protective earthing
connection.

The mains plug or an appliance coupler is used
as the disconnect device, the disconnect device
shall remain readily operable.

EXAMPLE

SPL

Small gig

90

train

92

Subway train

95

High level desktop monitors

97

Classic music concert

100
102
105
110
115

Rock concert

IN THIS MANUAL:

1. INTRODUCTION................................................................................. 1

2. FEATURES.........................................................................................2

3.. APPLICATIONS.................................................................................. 2

4. PANEL DESCRIPTION......................................................................... 4

5. WIRE CONNECTIONS......................................................................... 6

6. FREQUENCY RESPONSE DIAGRAM..................................................... 7

7. TECHNICAL SPECIFICATION................................................................ 8

8. WARRANTY ...................................................................................... 9

1. INTRODUCTION

Thank you very much for expressing your confidence in LTO products by
purchasing MS series powered monitor speaker system. The MS series monitor
are specifically designed for using in hi-quality performance site and the precise
sound commercial place. It includes three small and compact stage monitor
models (MS8MA, MS10MA, MS12MA) This series uses trapezium configuration
which greatly decreases the resonance of the standing wave in the cabinet.
These cabinets uses hi-density matrix spray-paint technics and the bottom
bracket design which make mounting quickly and flexibly. HF compression driver
and vented LF for fully professional performance.

The MS powered monitor speaker cabinets include some exclusive innovations
such as switch mode power supply and digital power circuitry (in selected modes)
that make them the lightest powered cabinets of this kind ever made. The MS
full range models include another Alto innovation: The MODELLER. Thanks to this
circuitry user can select 16 different tastes and applications.

MS powered Monitor speakerEnjoy your and make sure to read this Manual

carefully before operation!

1

2. FEATURES

The excellent quality of MS series-powered monitor speaker cabinets will provide
the following features:

Small and compact stage monitor
Trapezium configuration decreases the resonance of the standing wave in the
cabinet
Using hi-density matrix spray-paint technics for the cabinets
The bottom bracket design makes mounting quickly and flexibly
HF compression driver and vented LF for fully professional performance
With modeller include have 16 "sound mode " which are suitable for different

tastes and applications

Switch mode power supply and digital power circuitry

HOOK

UP

Make all initial connections with all the equipment powered off, and ensure that
all the main volume controls are turned down completely.

1). Connect one side of the signal cable at your mixer into the Main Output Left
/Right (with 1/4"Jack or XLR) and the other side of the cable in to the Line
Input (COMBO) of your MS monitor speaker cabinet (with1/4"Jack or XLR).

2). Connect the power cord to mains.

3). Turn ON your mixer first, then the MS cabinets.

4). Turn up the volume control of the MS cabinets.

5). Use PFL function to get the proper input level for the mixer, and adjust the
Main Mix Level control to reach the desired output level.

6). After use, turn off your active speaker cabinets first, then the mixer.

3. APPLICATIONS

2