Alto Professional PS 2A User Manual

PS 2/2A

User's Manual

R

LTO

www.altoproaudio.com

Version 1.1 Septemper 2005

English

SAFETY INSTRUCTIONS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

"Electric discharge"

This symbol, alert you to the presence of uninsulated dangerous voltage inside the product which constitutes aenclosure,
risk of electric shock.

"Exclamatory point"

This symbol, alert the user to the presence of important operating and maintenance instructions the owner's manualin
included to the product.

Disposing of this product should not be placed in municipal waste and should Separate collection.be

1. Read Instructions

All the safety and operation instructions should be read before using the product and retain them for future reference.

2. Water & Moisture

This product should not be used near water and will be protect from atmospheric agents in fixed or temporary installations.

3. Heat

This product should be situated away from heat sources such as radiators, or other devices which produce heat.

4. Liquid Entry

Care should be taken so that liquids are not spilled into the product and that objects do not fall on.

5. Service Assistance

This product should be serviced only by qualified service personnel when :

a. Liquids has spilled or objects have fallen into this product, or

b. This product has been exposed to rain, or

c. This product does not appear to operate normally or exhibits change in performance, or been dropped or itshas

cabinet / chassis damaged.

6. Package

The package of this product has been tested, inspect the package before open, if any damage is found, notify to
your dealer.

7. Hearing

This product produce high acoustic levels may cause permanent hearing loss, (SPL in for a defined period of time).

8. Installations

This product should be installed on the floor with a specific stand, according to the max weight, or in suspension
with a five points included in the cabinet (M10 1.5PH Length 30mm).
The suspension of more speaker cabinet in a vertical array is NOT advised.

1

1. PS 2 PASSIVE SPEAKER CABINET QUICK START

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

1). Connect one side of the speaker cable to the output CHA/CHB or Binding Post of your stereo power amplifier and
the other side to the input socket of your speaker cabinet.

2). Complete other connections as illustrated.

3). Turn on your mixer first, then the stereo power amplifier.

4). Turn up the volume controls of your amplifier to about 70%.

5). Use PFL function to get the proper input level for the mixer, and adjust the main mix level control to manipulate
the output level.

6). After using, turn off your stereo power amplifier first, then the mixer.

Speaker Cable

Stereo

Power Amplifier

Left

Tripod
Mount

Main Mix

Output

-. CONNECTION PLATE

(1) INPUT

Receive the power coming from an external power amplifier.
(SPK +1/-1 connected; +2/-2 not connected)

(2) THRU

Direct LINK for connect in parallel a second speaker cabinet.
(SPK +1/-1 connected; +2/-2 not connected)

Speaker Cable

Right

Output

Mixer

Main Mix

Tripod
Mount

LTO

PS 2

SOUND REINFORCEMENTSPEAKER SYSTEM

POWER HANDLING:

AES - 120 Watts

PEAK - 240 Watts

IMPEDANCE:

8 ohms nominal

MODEL

SERIAL

DESIGNEDAND DEVELOPMENT IN ITALY

R

Besides, the passive crossover included the electronic protection
on the driver.

2

INPUT THRU

LINK

(1) (2)

2. PS 2A ACTIVE SPEAKER CABINET QUICK START

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

1). Connect one side of the signal cable at your audio mixer into output left /right (with Stereo-Jack or XLR) and the
other side of the cable into the line input (Stereo-Jack) of your active speaker cabinet.

2). Connect the power cord to mains.

3). Turn on your mixer first, then the active speaker cabinets.

4). Turn up the volume control of the active speaker cabinets.

5). Use PFL function to get the proper input level for the mixer, and adjust the main mix level control to manipulate
the output level.

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

Signal Cable

Power Cord

Tripod
Mount

-. CONNECTION PLATE

(1) BI-POLAR MAIN POWER SWITCH

(2) AC POWER SOCKET WITH MAIN FUSE

Left

Main Mix

Output

Mixer

Signal Cable

Right

Main Mix
Output

Power Cord

Tripod
Mount

(5)(6) (7)

BAL

LTO

PS2APS2A

ACTIVESPEAKER CABINET

BI-AMP.POWERAMPLIFIER

(4)

LINKINPUT

VOLUME

+4dBu

R

CLIP

SHIELD

(3)

(3) GROUND SWITCH

(4) CLIP INDICATOR RED LED

(5) LINK OUT ON XLR CONNECTOR

(6) STEREO JACK INPUT

(7) MAIN VOLUME CONTROL

MODEL

"WARNING"

220-240V 50/60Hz

Useonlywith a 250V fuse

SERIAL

TOREDUCE THE RISK OF FIREOR ELECTRIC SHOCK DO
NOTEXPOSE THIS PRODUCT TO RAINOR MOISTURE.

POWER

(1)(2)

3

3. SUSPENSION POINT

The PS 2/2A speaker cabinet also provides the suspension
points for fixed installation. How to use them?

First, open the dust covers, and the next, mount the flying
rings to the suspension points (M10 1.5PH LENGTH: 30mm).
For further details, please refer to the right illustration.

4. TECHNICAL SPECIFICATIONS

Descriptions

System type

Continuos Power

Peak Power Rating

Sensitivity at 1W, 1mt

Max SPL at 1mt

Frequency Response

Impedance

Crossover Frequency

Lower - Frequency

High - Frequency

High Frequency Protection

Dimensions H W D

Net Weight /

kg lbs

Gross Weight lbs/kg

Shipping Volume

The AES 2 - 1984 Standard specification by Audio Engineering
Society, is representative and commonly used for the measure
in Professional Sound Reinforcement.

It is defined as the square of the RMS voltage generated with a
pre-defined and band-passed Pink Noise Signal, applied con­tinuously for 2 hours, on the assembled speaker cabinet.

In this way, the declared power of ALTO passive speaker cabinet,
is comparable to the RMS voltage value, measured on the equiva­lent power amplifier for the same value of impedance.

PS 2

2 - way vented box

120 Watt AES Standard

240 Watt Peak

96dB SPL

117dB SPL

60Hz / 20kHz +/- 10dB

8 ohm Nominal

2450Hz 12dB/Oct

10" / 266mm - 1.5" Voice Coil

1" Compression Driver -

1" Voice Coil

Electronic Dynamic Protection

595mm 320mm 334.5mm

(23.4" 12.6" 13.2")

9.27kg / 20.44lbs

12.45kg / 27.45lbs

3.68CFT

Descriptions

Powered System type

LOW Output Power

HIGH Output Power

Max SPL at 1m

Frequency Response

Impedance Low - High

Crossover Frequency

Protection Low - High

Low - Frequency

High - Frequency

Horn Coverage H V

Input Sensitivity

Input Impedance

Connectors

Plastic Reinforced Cabinet

Hardware Suspension

Amplifier Protections

External Control

Power Supply

Dimensions H W D

Net Weight /

kg lbs

Gross Weight lbs/kg

Shipping Volume

Eyebolt

Dust Cover

Suspension Point

PS 2A

Bi-Amp. with analog processor

150W RMS Bridge Class AB

50W RMS Class AB

118dB SPL

55Hz / 20kHz +/- 10dB

Low 8Ohm - High 8Ohm

Complex EQ processor

Limiter / Compressor plus PTC

10" / 266mm - 1.5" voice coil

1"Compression Driver ­1" Voice Coil

90 H 45 V

Line + 4dB / 1.23V

30kohms Balanced ­15kohms Unbalanced

Input with Jack / Link with XLR

Trapezoidal & Monitor shape

Seven suspension points

Soft Start - Short Circuit ­DC voltage - Thermal Protection

Volume - Clip - Ground Switch

230Volt / 115Volt 50 /60Hz

595mm 320mm 334.5mm
(23.4" 12.6" 13.2")

11.60kg / 25.57lbs

14.78kg / 32.58lbs

3.68CFT

4

SEIKAKU TECHNICAL GROUP LIMITED

No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan

http://www.altoproaudio.com Tel: [phone]

email: [e-mail] Fax: [phone]

All rights reserved to ALTO. All features and content might be changed

without prior notice. Any photocopy, translation, or reproduction of part of this

manual without written permission is forbidden. Copyright 2005 SEIKAKU GROUP

c

NF01929-1.1