SR Series

User's Manual

LTO www.altoproaudio.com

Version 1.3 August 2006

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 enclosure, which constitutes a risk of electric shock.

"Exclamatory point"

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

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

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 has been dropped or its

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

TABLE OF CONTENT

1. QUICK START - PASSIVE SPEAKER CABINET....................................................................................3

-. For Passive Full-range Speakers

-. For Passive Subwoofer & Satellite Speakers

2. QUICK START - ACTIVE SPEAKER CABINET.....................................................................................5

-. For Active Full-range Speakers

-. For Active Subwoofer & Satellite Speakers

3. CONNECTION PLATE...........................................................................................................................7

-. Passive Full-range Speaker for SR300 / SR400 / SR500

-. Passive Subwoofer Speaker for SR500S

-. Active Full-range Speaker for SR300A / SR400A / SR500A

-. Active Subwoofer Speaker for SR500SA

4. WIRE CONNECTIONS .........................................................................................................................10

-. For Passive Speaker Cabinets

-. For Active Speaker Cabinets

5. TECHNICAL SPECIFICATIONS ...........................................................................................................11

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

SR Passive Full-range Speakers

Speaker Cable Speaker Cable

Tripod

Mount

Stereo

Power Amplifier

Left

Main Mix

Output

Right

Main Mix

Output

Tripod

Mount

Mixer

3

-. For Passive Subwoofer & Satellite Speakers

1). Connect one side of 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 subwoofer, with the second speaker cable connect the output of the subwoofer to the input of satellite.

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

SR Passive Subwoofer & Satellite Speakers pole

Mount

Speaker Cable

Speaker Cable Speaker Cable pole

Mount

Speaker Cable

Mixer

Stereo

Power Amplifier

Left

Main Mix

Output

Right

Main Mix

Output

4

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 Full-range Speakers

1). Connect one side of the signal cable to the output left /right (with Stereo-Jack or XLR) of your audio mixer and the other side to 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). The SR400A work with 16 presets, select your favorite between 1 (CONCERT - HALL), to 9 (KARAOKE), this preset included a +6dB bass boost, except the preset 3 (FLAT), 4 (VOCAL) and 8 (FLOOR MONITOR); the other presets between 10 (CONCERT H. + SW), to 16 (KARAOKE + SW), work with a natural bass response, if required from the musical program, or for improve the matching with a subwoofer SR500SA.

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

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

QUICK START

SR Active Full-range Speakers

Signal Cable Signal Cable

Tripod

Mount

Power Cord

Left

Main Mix

Output

Right

Main Mix

Output

Power Cord

Tripod

Mount

Mixer

5

-. For Active Subwoofer & Satellite Speakers

1). Connect one side of signal cable to output left/right of your audio mixer (with stereo-Jack or XLR) and the other side to the left/right input (stereo/mono XLR) of the active subwoofer; with the second signal cable connect the left/right output of the subwoofer (stereo/mono- XLR) to the line input (COMBO) of the active satellite (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 fo the active speaker cabinets.

5). Select one of the sixteen presets in to SR400A, with encoder knob (example: number 15 - DISCO + SW).

6). The Subwoofer SR500SA work with 16 presets, select the best crossover frequency presets between 1 (80Hz

BOOST 0°) in phase or 2 (80Hz BOOST 180°) out of phase, to 9 (160Hz BOOST 0°) in phase or 10 (160Hz BOOST

180°) out of phase, this preset included a +6dB bass boost; the other presets between 11 (100Hz FLAT 0°) in phase or 12 (100Hz FLAT 180°) out of phase to 15 (140Hz FLAT 0°) in phase or 16 (140Hz FLAT 180°) out of phase, work with a Natural Bass response, if required from the musical program.

Select one of the sixteen presets in to SR500SA, with encoder knob (example: number 4 - 100Hz BOOST 180° out of phase, or the number 6 - 120Hz BOOST 180°) out of phase, for coupling to the preset 15 - DISCO + SW of the satellite. The selection of phase conditions between 0° in phase or 180° out of phase is always necessary after the setting of SR500SA in the environment

PRESET

10

11

12

13

14

15

16

SR400A SATELLITE

CONCERT H. + SW

LIVE + SW

FLAT + SW

JAZZ + SW

ROCK + SW

DISCO + SW

KARAOKE + SW

PRESET

1-2-3-4

3-4-5-6

11-12-13-14

11-12-13-14

3-4-5-6

3-4-5-6

1-2-3-4

SR500SA SUBWOOFER

80Hz/100Hz BOOST 0°/180°

100Hz/120Hz BOOST 0°/180°

100Hz/120Hz FLAT 0°/180°

100Hz/120Hz FLAT 0°/180°

100Hz/120Hz BOOST 0°/180°

100Hz/120Hz BOOST 0°/180°

80Hz/100Hz BOOST 0°/180°

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

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

QUICK START

SR Active Subwoofer & Satellite Speakers

Power Cord

Tripod

Mount

Signal Cable

Left

Main Mix

Output

Signal Cable

Right

Main Mix

Output

Tripod

Mount

6

3. CONNECTION PLATE

- Passive Full-range Speaker for SR300 / SR400 / SR500

(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).

LTO R

SR400

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)

- Passive Subwoofer Speaker for SR500S

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

(2) OUTPUT: Power output for satellite speaker, under passive crossover filtered at 125Hz (SPK +1/-1 connected;

+2/-2 not connected).

LTO R

SR500S

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)

7

-. Active Full- range Speaker for SR300A / SR400A / SR500A

(1) Bi-polar main power switch

(2) Input AC power socket

(3) Ground switch

(4) POWER, blue LED, indicate ON status

(5) SIGNAL / LIMIT, green/red LED

(6) LINK on XLR connector

(7) LINE / MIC IN on COMBO connector

(8) Main VOLUME control

(9) PRESETS control with 16 presets as follows

12

13

14

15

16

8

9

10

11

Preset NO

1

2

3

6

7

4

5

Descriptions

CONCERT HALL

LIVE

FLAT

VOCAL

JAZZ-CLUB

ROCK

DISCO

FLOOR MONITOR

KARAOKE

CONCERT H. + SW

LIVE + SW

FLAT + SW

JAZZ + SW

ROCK + SW

DISCO + SW

KARAOKE + SW

(4)

(7) (6) (5) (8) (9)

PL

PUSH

NEW TIDE

2

3

1

INPUT

BAL

LINK

VOLUME

SIGNAL

LIMIT

I

L

N

E

MAX

MIN

MIN

MAX

M

I

C

KARAOKE+SW

DISCO+SW

ROCK+SW

JAZZ+SW

FLAT+SW

LIVE+SW

CONCERT H. +SW

CONCERT HALL

KARAOKE

LIVE

FLAT

VOCAL

JAZZ-CLUB

ROCK

DISCO

FLOOR MONITOR

SHIELD

LTO

SR400A POWER AMPLIFIER WITH

DSP PROCESSOR

(3)

"WARNING" TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.

AC~230V 50Hz POWER

MODEL

SERIAL

(2) (1)

8

-. Active Subwoofer Speaker for SR500SA

(1) Bi-polar main power switch

(2) Input AC power socket

(3) Ground switch

(4) POWER, blue LED, indicate ON status

(5) SIGN / LIMIT, green/red LED

(6) LINK OUT on XLR connector

(7) LINE / MIC IN on XLR connector

(8) Main VOLUME control

(9) PRESETS control with 16 presets as follows

11

12

13

14

7

8

9

10

15

16

Preset NO

1

2

5

6

3

4

Descriptions

80Hz BOOST 0°

80Hz BOOST180°

100Hz BOOST 0°

100Hz BOOST 180°

120Hz BOOST 0°

120Hz BOOST 180°

140Hz BOOST 0°

140Hz BOOST 180°

160Hz BOOST 0°

160Hz BOOST 180°

100Hz FLAT 0°

100Hz FLAT 180°

120Hz FLAT 0°

120Hz FLAT 180°

140Hz FLAT 0°

140Hz FLAT 180°

(6)

(7) (5) (8) (4) (9)

2

JT

3

1

INPUTS

RIGHT

BAL +4dB

2

JT

3

1

LEFT

SIGN/LIMIT

VOLUME

+4dB

140Hz FLAT 180

140Hz FLAT 0

120Hz FLAT 180

120Hz FLAT 0

100Hz FLAT 180

100Hz FLAT 0

160Hz BOOST 180

80Hz BOOST 0

160Hz BOOST 0

80Hz BOOST 180

100Hz BOOST 0

100Hz BOOST 180

120Hz BOOST 0

120Hz BOOST 180

140Hz BOOST 0

140Hz BOOST 180

PL

LINK LINK

SHIELD LTO

SR500SA SUBWOOFER ACTIVE WITH

DSP PROCESSOR

(3)

9

(2) (1)

4. WIRE CONNECTIONS

-. For Passive Speaker Cabinets

Please use only the power connectors to make connections with other signal source equipment for the passive speaker cabinets. The power connector has four terminals: 1+, 1-, 2+, 2-.

1+

2+

In our cabinets, only 1+/1- are used to connect the Speaker+/Speaker-, and 2+/2- are not used.

-. For Active Speaker Cabinets

As to these circumstances, audio connections is mostly intended for the signal flow, so, determine the wire configuration according to your real application system and its connecting facility. Normally, you have the following choices:

˙Balanced

TIP RING SLEEVE

TIP RING SLEEVE

SLEEVE RING TIP

Tip

Ring

Sleeve

1

2

3

Tip

Ring

Sleeve

1

2

3

Tip

Ring

Sleeve

1

2

3

˙Unbalanced

TIP RING SLEEVE

TIP SLEEVE

TIP SLEEVE

TIP RING SLEEVE

SLEEVE TIP

Tip

Ring

Sleeve

Tip

Sleeve

Tip

Sleeve

Tip

Ring

Sleeve

1

2

3

1

2

3

1

2

3

Tip

Sleeve

1

2

3

Tip

Ring

Sleeve

10

5. TECHNICAL SPECIFICATIONS

Descriptions

Active System Type

LOW - RMS Output Power

HIGH - RMS Output Power

System Peak Power

Max SPL at 1m

Frequency Response

Impedance Low - High

Crossover Frequency

Protection Low - High

Low Frequency Device

High Frequency Device

Horn Coverage H°× V°

Input Sensitivity

Input Impedance

Connectors

Plywood Cabinet

Hardware Suspension

Amplifier Protections

External Control

Power Supply

Net Weight lbs/kg

Gross Weight lbs/kg

Shipping Volume

SR300A

Bi - Amp. With DSP processor

SR400A

Bi - Amp. With DSP processor

SR500A

Bi - Amp. With DSP processor

250Watt RMS Class H

100Watt RMS Class AB

600Watt Peak

120dB SPL calculated

60Hz / 20kHz at -10dB

Low 4ohm - High 8ohm

2250Hz - DSP Processor

DSP Lim/Comp. each section

10" / 266mm - 2" voice coil

164W @8Ohm, 251W @4Ohm Class H

164W @8Ohm, 251W @4Ohm Class AB

800Watt Peak

232W @8Ohm, 382W @4Ohm Class H

232W @8Ohm, 382W @4Ohm Class AB

1000Watt Peak

124dB SPL calculated 122dB SPL calculated

55Hz / 20kHz at -10dB

Low 4ohm - High 8ohm

50Hz / 20kHz at -10dB

Low 4ohm - High 8ohm

2150Hz - DSP Processor

DSP Lim/Comp. each section

12" / 318mm - 2.5" voice coil

1.35" Compression-driver

90°H × 60°V

2000Hz - DSP Processor

DSP Lim/Comp. each section

15" / 385mm - 3" voice coil

Mic / Line +4dB / 1.23V

30kohm Balanced / 15kohm Unbalanced

Input with Combo / Link with XLR

18mm Multilayer Plywood

Five suspension point

Soft Start - Short Circuit - DC voltage - Thermal Protection

Line Volume - Encoder with 16 preset - Clipping LED indicator - Ground Switch

230Volt / 115Volt 50 / 60Hz

565×346×355mm

50.7Ibs/23.0Kg

59.08Ibs/26.80Kg

5.21CFT

645×395×385mm

59.77LBS/27.11Kg

72.88LBS/33.06Kg

6.56CFT

Descriptions

Active System Type

LOW - RMS Output Power

System Peak Power

Max SPL at 1m

Frequency Response

Impedance Low - High

Crossover Frequency

Protection Low - High

Low Frequency Device

Input Sensitivity

Input Impedance

Connectors

Plywood Cabinet

Hardware Suspension

Amplifier Protections

External Control

Power Supply

Net Weight lbs/kg

Gross Weight lbs/kg

Shipping Volume

SR500SA

Amp. with DSP processor

233W @8Ohm, 378W @4Ohm Class H

1000Watt Peak

124dB SPL calculated

45Hz / 20kHz at -10dB

Low 4ohm

16 selectable Crossover

DSP Limiter / Compressor

15" / 385mm - 3" voice coil

Line +4dB / 1.23V

30kohm Bal. / 15kohm Unbal.

Input / Output with XLR

18mm Multilayer Plywood

No suspension point

Same to SR400A

Same to SR400A

×

230Volt / 115Volt 50 / 60Hz

× ×

93.81LBS/42.55Kg

104.65LBS/47.47Kg

14.29CFT

11

Descriptions

Passive System Type

Continuos Power

Peak Power

Max SPL at 1m

Frequency Response

Impedance

Crossover Frequency

Protection

Low Frequency Device

High Frequency Device

Horn Coverage H°× V°

Connectors

Plywood Cabinet

Hardware Suspension

Dimensions H × W × D

Net Weight lbs/kg

Gross Weight lbs/kg

Shipping Volume

SR300

2 - way vented box

250Watt AES Standard

500Watt Peak

119dB SPL calculated

65Hz / 20kHz at -10dB

8ohm

2250 - 12dB/Oct.

Electronic Dynamic Protection

10" / 266mm - 2" voice coil

1.35" Compression-driver

560×345×355mm

SR400

2 - way vented box

300Watt AES Standard

600Watt Peak

121dB SPL calculated

60Hz / 20kHz at -10dB

8ohm or 4ohm

2150 - 12dB/Oct.

Electronic Dynamic Protection

SR500

2 - way vented box

350Watt AES Standard

700Watt Peak

123dB SPL calculated

55Hz / 20kHz at -10dB

8ohm or 4ohm

2000 - 12dB/Oct.

Electronic Dynamic Protection

12" / 318mm - 2.5" voice coil 15" / 385mm - 3" voice coil

1.35" Compression-driver

90 °H × 60°V

1.35" Compression-driver

2 × SPK4 @ Power Input / Output

18mm Multilayer Plywood

Five suspension point

680×455×440mm 645×395×385mm

46.76Ibs/ 21.21Kg

59.88Ibs/ 27.16Kg

6.56CFT

Descriptions

Passive System Type

Continuos Power

Peak Power

Max SPL at 1m

Frequency Response

Impedance

Crossover Frequency

Low Frequency Device

Connectors

Plywood Cabinet

Hardware Suspension

Dimensions H × W × D

Net Weight lbs/kg

Gross Weight lbs/kg

Shipping Volume

SR500S

Direct Radiator / Rear Loaded

400Watt AES Standard

800Watt Peak

123dB SPL calculated

50Hz / 200Hz at -10dB

4ohm

125Hz - 12dB/Oct.

15" / 385mm - 3" long voice coil

2 × SPK4@ Power Input / Output

18mm Multilayer Plywood

No suspension point

598×500×600mm(23.54")×(19.69")×(23.62)

78.15LBS/35.45Kg

89LBS/40.37Kg

14.29CFT

12

SEIKAKU TECHNICAL GROUP LIMITED

No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan http://www.altoproaudio.com Tel: 886-4-22313737 email: [email protected] Fax: 886-4-22346757

All rights reserved to ALTO. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this

NF01890-1.3