PS Series
User's Manual
R
LTO
www.altoproaudio.com
Version 1.0 January 2004
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.
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 wall or in the floor with specific stands, according to the max weight.
1
TABLE OF CONTENT
1. QUICK START - PASSIVE SPEAKER CABINET....................................................................................3
-. For Passive Full-range Speakers
2. QUICK START - ACTIVE SPEAKER CABINET.....................................................................................4
-. For Active Speaker Cabinets
3. CONNECTION PLATE ................................................................................. ..........................................5
-.
ACTIVE SPEAKER CABINET PS 4HA
PASSIVE FULL-RANGE SPEAKER PS 4H
-.
-. ACTIVE SPEAKER CABINET PS 4LA
-. PASSIVE FULL-RANGE SPEAKER PS 4L
-. ACTIVE SPEAKER CABINET PS 3A
-. PASSIVE FULL-RANGE SPEAKER PS 3
4. WIRE CONNECTIONS ...........................................................................................................................8
-. For Passive Speaker Cabinets
-. For Active Speaker Cabinets
5. SUSPENSION POINT ............................................................................................................................8
6. TECHNICAL SPECIFICATIONS..............................................................................................................9
2
1. QUICK START - PASSIVE SPEAKER CABINET
Make all initial connections with all the equipment powered off, and ensure that all the main volume controls are turned
completely down.
-. For Passive Full-range Speakers
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.
QUICK START
PS Passive Full-range Speakers
Tripod
Mount
Speaker Cable
Power Amplifier
Mixer
Stereo
Main Mix
Left
Output
Speaker Cable
Right
Main Mix
Output
Tripod
Mount
3
2. QUICK START - ACTIVE SPEAKER CABINET
Make all initial connections with all the equipment powered off, and ensure that all the main volume controls are turned
completely down.
-. For Active Speaker Cabinets
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 (COMBO) of your active speaker cabinet (with Stereo-Jack or
XLR).
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.
QUICK START
Power Cord
Tripod
Mount
Signal Cable
PS Active Full-range Speakers
Left
Main Mix
Output
Right
Main Mix
Output
Signal Cable
Power Cord
Tripod
Mount
Mixer
4
3. CONNECTION PLATE
-. ACTIVE SPEAKER CABINET PS 4HA
(1) BI-POLAR MAIN POWER SWITCH
(2) AC POWER SOCKET WITH MAIN FUSE
(3) GROUND SWIT H
(4) SIGNAL LIMIT, GREEN/RED LED
(5) LINK OUT ON XLR CONNECTOR
C
(5)(6) (7)
PUSH
NEW TIDE
132
LINKINPUT
BAL
(4)
SIGNAL
LIMIT
L
I
N
E
MIN MAX
VOLUME
MAX
SHIELD
MIN
M
I
LTO
C
PS 4HAPS 4HA
ACTIVE SPEAKER CABINET
BI-AMP.POWER AMPLIFIER
PROCESSORDSP
R
(3)
(6) LINE /MIC INPUT ON CONNECTOR
(7) MAIN CONTROL
VOLUME
COMBO
- PASSIVE FULL-RANGE SPEAKER PS 4H
(1) INPUT: Receive the power coming from an external
power amplifier (SPK +1/-1 connected; +2/-2
not connected).
TOREDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
"WARNING"
230V 50Hz
Useonly with a 250V fuse
MODEL
SERIAL
(2) (1)
LTO
PS 4H
POWER
R
(2) THRU: Direct LINK for connect in parallel a second
speaker cabinet (SPK +1/-1 connected; +2/-2
not connected).
Besides, the passive crossover included the electronic
protection on the driver.
SOUND REINFORCEMENT SPEAKER SYSTEM
POWER HANDLING:
AES - 250 Watts
PEAK - 500 Watts
IMPEDANCE:
8 ohms nominal
MODEL
SERIAL
DESIGNED AND DEVELOPMENT IN ITALY
INPUT THRU
LINK
(1) (2)
5
-. ACTIVE SPEAKER CABINET PS 4LA
(1) BI-POLAR MAIN POWER SWITCH
(2) AC POWER SOCKET WITH MAIN FUSE
(3) GROUND SWITCH
(4) CLIP INDICATOR RED LED
(5) LINK OUT ON XLR CONNECTOR
(6) STEREO JACK INPUT
(7) MAIN VOLUME CONTROL
(4)
(5)(6) (7)
VOLUME
SIGNAL
LIMIT
LTO
R
(3)
- PASSIVE FULL-RANGE SPEAKER PS 4L
(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).
Besides, the passive crossover included the electronic
protection on the driver.
TOREDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
"WARNING"
MODEL
SERIAL
POWER
(2) (1)
LTO
PS 4L
SOUND REINFORCEMENT SPEAKER SYSTEM
POWER HANDLING:
AES - 180 Watts
PEAK - 360 Watts
IMPEDANCE:
8 ohms nominal
MODEL
SERIAL
DESIGNED AND DEVELOPMENT IN ITALY
R
INPUT THRU
LINK
(1) (2)
6
-. ACTIVE SPEAKER CABINET PS 3A
(1) BI-POLAR MAIN POWER SWITCH
(5)(6) (7)
(4)
(2) AC POWER SOCKET WITH MAIN FUSE
(3) GROUND SWITCH
(4) CLIP INDICATOR RED LED
(5) LINK OUT ON XLR CONNECTOR
(6) STEREO JACK INPUT
(7) MAIN VOLUME CONTROL
VOLUME
+4dBu
PS 3APS 3A
CLIP
LINKINPUT
BAL
TOREDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
"WARNING"
220-240V 50/60Hz
Useonlywith a 250V fuse
SHIELD
MODEL
SERIAL
ACTIVE SPEAKER CABINET
BI-AMP.POWER AMPLIFIER
LTO
POWER
R
(3)
- PASSIVE FULL-RANGE SPEAKER PS 3
(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).
Besides, the passive crossover included the electronic
protection on the driver.
(2) (1)
LTO
R
PS 3
SOUND REINFORCEMENT SPEAKER SYSTEM
POWER HANDLING:
AES - 120 Watts
PEAK - 240 Watts
IMPEDANCE:
8 ohms nominal
MODEL
SERIAL
DESIGNED AND DEVELOPMENT IN ITALY
INPUT THRU
LINK
(1) (2)
7
4. WIRE CONNECTIONS
-. For Active Speaker Cabinets
Balanced
1+
2-
1-
2+
TIPRING SLEEVE
3
21
TIPRING SLEEVE
Unbalanced
TIPSLEEVE
TIPRING SLEEVE
SLEEVERING TIP
Tip
Ring
Sleeve
1
3
2
1
3
2
Ring
Sleeve
Sleeve
Ring
Sleeve
1
2
3
Tip
Tip
Tip
1
2
3
Tip
Ring
Sleeve
1
2
3
1
2
3
Tip
Sleeve
Tip
Ring
Sleeve
1
2
3
8
6. TECHNICAL SPECIFICATIONS
Descriptions PS4LA Active PS3A Active
Active System type Bi-Amp. with analog processor Bi-Amp. with analog processor
LOW - RMS Output Power 150W RMS Class AB 70W RMS Class AB
HIGH - RMS Output Power 50W RMS Class AB 50W RMS Class AB
Max SPL at 1m 118.5dB SPL calculated 115.5dB SPL calculated
Frequency Response 55Hz / 20kHz +/-10dB 60Hz / 20kHz +/-10dB
Impedance Low - High Low 4 Ohm - High 8 Ohm Low 4 Ohm - High 8 Ohm
Crossover Frequency 2500Hz 6 / 12dB/Oct. 3000Hz 6 / 12dB/Oct.
Protection Low - High Analog Limiter / Compressor Analog Limiter / Compressor
Low - Frequency 12" / 318mm - 2" voice coil 12" / 318mm - 2" voice coil
High - Frequency Aluminum Driver 1" Voice Coil Aluminum Driver 1" Voice Coil
Horn Coverage H
Input Sensitivity Line + 4dB / 1.23 V
Input Impedance 30k Balanced -15k Unbalanced
Connectors Input with Jack / Link with XLR Input with Jack / Link with XLR
Plastic Reinforced Cabinet Trapezoidal & Monitor shape
Hardware Suspension Six suspension point
Amplifier Protections Soft Start - Short Circuit - DC voltage - Thermal Protection
External Control Volume- Clip - Ground Switch Volume- Clip - Ground Switch
Power Supply 230Volt / 115Volt 50 / 60Hz
Dimensions H W D
Net Weight lbs/kg 19.40kg / 42.76lbs 19.2kg / 42.32lbs
Gross Weight lbs/kg 22.05kg / 48.61lbs 21.85kg / 47.17lbs
Shipping Volume 4.83CFT 4.83CFT
xV 90 H x45 V
PS4HA Active
Bi-Amp. with DSP processor
300Watt RMS Class H
100Watt RMS Class AB
121.5dB SPL calculated
50Hz / 20kHz +/-10dB
Low4Ohm-High8Ohm
2000Hz - DSP Processor
DSP Lim./ Comp. each sections
12" / 318mm - 2.5" voice coil
Titanium Driver 1.35" Voice Coil
Input with Combo/ Link with XLR
Mic/Line Vol.-Clip-Ground Switch.
660mm 396mm 384mm (26" 15.6" 15.1")
23.38kg / 51.54lbs
26.06kg / 57.38lbs
4.83CFT
Descriptions PS4L Passive PS3 Passive
Passive System type 2-way vented box 2-way vented box
Continuos Power Handling 180Watt AES Standard 120Watt AES Standard
Peak Power Rating Peak 360Watt Peak 240Watt Peak
Sensitivity at 1W,1mt 96 dB SPL 95 dB SPL
Max SPL at 1mt 118.5 dB SPL Calculated
Frequency Response 60Hz / 20kHz +/-10dB
Impedance 8 Ohm Nominal
Crossover Frequency 2250Hz 6 / 12dB/Oct
Low - Frequency 12" / 318mm - 2" voice coil
High - Frequency Driver 1" Voice Coil
High Frequency Protection Electronic Dynamic Protection
Dimensions HxWxD 660mm x396mmx 384mm (26" x15.6" x15.1")
Net Weight lbs/kg 17.12kg / 37.74lbs
Gross Weight lbs/kg 22kg / 48.5lbs
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.
PS4H Passive
2-way vented box
250Watt AES Standard
500Watt
97 dB SPL
121 dB SPL Calculated
55Hz / 20kHz +/-10dB
8 Ohm Nominal
2000Hz 12 / 24dB/Oct
12" / 318mm - 2.5" voice coil
Titanium Driver 1.35" Voice Coil
Electronic Dynamic Protection
18.75kg /41.34lbs
22kg / 48.5lbs
4.83CFT 4.83CFT
115 dB SPL Calculated
65Hz / 20kHz +/-10dB
8 Ohm Nominal
3000Hz 6 / 12dB/Oct
12" / 318mm - 2" voice coil
Driver 1" Voice Coil
Electronic Dynamic Protection
17.3kg / 38.13lbs
19.95kg / 43.98lbs
4.83CFTShipping
9
SEIKAKU TECHNICAL GROUP LIMITED
No. 1, Lane 17, Sec. 2, Han Shi W. Road, Taichung, 401 Taiwan
http://www.altomobile.com Tel: 886-4-22313737
email: info@altomobile.com Fax: 886-4-22346757
All rights reserved to ALTO Mobile. Due to continued development in response to
customer feedback, product features, specifications and/or internal/external design may be
changed without prior notice. No photocopying, translation or reproduction of any part of this user
manual is allowed without prior written permission.Copyright 2004 Seikaku Technical Group Limited.
c
NF01702-1.1
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