R
LTO
OWNER'S MANUAL
PS4/5 LITEPACK
SPEAKER ENCLOSURE
ACTIVE MODELS
www.altoproaudio.com
Version 1.1 SEPTEMBER 2007
English
IMPORTANT SAFETY INSTRUCTION
CAUTION |
RISK OF ELECTRIC SHOCK |
DO NOT OPEN |
WARNING
To reduce the risk of electric shock and fire, do not expose this equipment to moisture or rain.
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.
2.Keep this Manual in a safe place.
3.Be aware of all warnings reported
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.
7.Power Cords are designed for your safety. Do 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.
8.Unplug this equipment when unused for long periods of time or during a storm.
9.Refer all service to qualified service personnel only. Do not perform any servicing other than those instructions contained within the User's Manual.
10.To prevent fire and damage to the product, 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.
Dispose of this product should not be placed in municipal waste and should be separate collection.
11.Move this Equipment only with a cart, 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 |
SPL |
EXAMPLE |
8 |
90 |
Small gig |
6 |
92 |
train |
4 |
95 |
Subway train |
3 |
97 |
High level desktop monitors |
2 |
100 |
Classic music concert |
1,5 |
102 |
|
1 |
105 |
|
0,5 |
110 |
|
0,25 or less 115 |
Rock concert |
|
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.
IN THIS MANUAL: |
|
|
1. |
INTRODUCTION ................................................................................ |
1 |
2. |
WHY ACTIVE? ................................................................................... |
1 |
3. |
POSITIONING ................................................................................... |
2 |
4. |
HOOKUP DIAGRAMS ....................................................................... |
3 |
5. |
PANEL DESCRIPTION ........................................................................ |
4 |
6. |
RIGGING .......................................................................................... |
5 |
7. |
FREQUENCY RESPONSE DIAGRAM .................................................... |
5 |
8. |
TECHNICAL SPECIFICATION................................................................ |
6 |
9. |
WARRANTY ...................................................................................... |
7 |
1. INTRODUCTION
Thank you for your purchasing of the PS4/PS5 LITEPACK, 2-way active sound reinforcement speaker enclosures. It is just one of the many Alto products that a talented, multinational Team of Audio Engineers and Musicians have developed with their great passion for music. Your PS4/PS5 LITEPACK is capable of enormous sound pressure level and it has been created to give you a performance that is better than any loudspeaker in this range thanks to the quality of its transducers, built-in amplifier and digital processor. We design all our transducers and cabinets in Emilia-Romagna of Italy, a lowland famous for music and fast cars. In fact, Lamborghini, Maserati and Ferrari are made just a few miles away from our design centers. The same area has a long tradition in designing and manufacturing some of the world's best professional transducer and plastic moldings.
Enjoy your PS4/PS5 LITEPACK and make sure to read this Manual carefully before operation!
2. WHY ACTIVE?
There are several advantages in the active design for a speaker enclosure.
1.The built-in crossover is active and its components require low power since they operate on line-level signals. Unlike passive crossovers, active designs don' t waste power since they are not made by large capacitors, coils and resistors.
2.The built-in amplifiers are specifically designed for the impedance of the built-in speakers.
3.The full-range signal at the input is crossovered before it reaches the amplifier. In this way, each amplifier only receive the frequency range selected for its driver.
4.In passive configurations, long speakers cable cause electrical resistance and compromise the amplifier's damping factor. In the active design the wires length in between amplifier and transducer in minimal. In this way, all the power of the amplifier is directly transferred to the transducer without any loss produced by long speaker cables.
5.Because of the active circuits it is possible to include flexible tools such as microphone preamplifiers.
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