Mistral 1500 User`s manual

Mistral 1500 User`s manual

LTO

R

User's Manual

MISTRAL 900/1500

STEREO POWER AMPLIFIER

www.altoproaudio.com

Version 1.0 OCT. 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.

7.

8.

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.

11.

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.

12.

CAUTION

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

1.

Read this Manual carefully before operation.

2.

3.

4.

Keep this Manual in a safe place.

Be aware of all warnings reported with this symbol.

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 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 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.

HOURS X DAY

8

6

4

3

Dispose of this product should not be placed in municipal waste and should be separate collection.

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.

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:

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

SPL

90

92

95

97

2

1,5

1

0,5

0,25 or less

100

102

105

110

115

EXAMPLE

Small gig train

Subway train

High level desktop monitors

Classic music concert

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.

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.

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. FEATURES................................................................................1

3. CONTROL ELEMENTS................................................................2

4. APPLICATION............................................................................5

5. TECHNICAL SPECIFICATIONS

.....................................................13

6. WARRANTY.............................................................................14

1. INTRODUCTION

Thank you for purchasing the MISTRAL 900/1500.

They are the line of high power, low profile, professional Power Amplifiers with advanced features and great reliability. They deliver tremendous power in only two rack spaces, providing high level performance under the most demanding conditions. An automatic speed fan matches cooling capacity with heat requirements.

The amplifiers contain two independent channels, with separate AC transformer secondaries, power supplies and protection system. Each channel has independent protective circuitry against open circuit, short circuit, mismatched loads and over temperature and LED indicators for operating/protection, limit, power on and clip. The power outputs employ standard power connectors and all the inputs are electronically balanced.

Enjoy your MISTRAL900/1500 and make sure to read this Manual carefully before operation.

2. FEATURES

Mountable in a 19" unit (2U), stereo high power amplifier

Fantastic audio quality even with extremely high volume levels

Solid and durable can be mounted into a cabinet

User-controllable clip limiter

2

2

300 Watt EIAJ on 4 ohms for MISTRAL 900

500 Watt EIAJ on 4 ohms for MISTRAL 1500

Stereo (dual-channel) or bridge mono operating modes

Balanced XLR inputs/parallel outputs to ensure noiseless long wiring

Binding post and Neutrik Speak-on connectors for output

Single channel, bridge and bi-amp output wiring possibility

Front panel LED indicators for operating/protection, limit, power on and clip

Accurate gain control

Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers

Over-heat protection for each channel

Manufactured under QS9000, VDA 6.1 certified management system

1

SPO

TLIGHT

3. CONTROL ELEMENTS

2 3

ON

POWER

OFF

CH1

CLIP

LIMIT

OPERATING/

PROTECTION

POWER ON

1500

CH2

Stereo Power Amplifier

R

LTO

1 4 5 6

1 POWER SWITCH

It switches the amplifier ON and OFF.

2 CLIP LED

When the signal distortion reaches or surpasses 0.5% , the LED lights up. This means the output level of signal source is too high and it is time to reduce the input level until the LED turns off.

3 OUTPUT LIMITER LED

When the unit limits the output signal, the LED lights up.

4 OPERATION AND PROTECTION LED

When there presets signal, the yellow LED lights up. When at protection status, the LED turns off.

5 POWER LED

This LED lights up when the unit is powered on.

6 LEVEL CONTROL (For CH 1 & CH 2)

Adjust the output signal level to avoid signal distortion.

2

SPO

TLIGHT

3. CONTROL ELEMENTS

Rear panel

7

12

14 11

9

MODEL

SERIAL

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

2

3

1

INPUT

NEW TIDE

2

3

1

2

3

1

PARALLEL

OUTPUT

2

3

1

POWER OUTPUTS

1+

CH1

1-

POS NEG

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

2+

CH2

2-

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

CH1

BRIDGE

MONO

CH2

BREAKER

13 10 8

7 COOLING FAN

This fan secures enough cooling for your amplifier. The fan speed is electronically regulated depending on the temperature of the power devices.

8 IEC SOCKET FOR AC POWER CABLE

Connect the supplied main cord. Do not insert the power cord into the MISTRAL

900/1500 amplifiers and into the AC Outlet until voltage has been correctly set.

9 CIRCUIT BREAKER (Manual reset button)

This is an electronic fuse for protecting the unit from possible damage. When the unit is overloaded or the temperature inside the unit is too high, this push type button will spring out and disconnect the power supply. Push the Breaker down again to restore normal working conditions.

10 OUTPUT CONNECTOR

These connectors have two kinds: Binding post and Neutrik connector. You can choose proper connectors according to practical need. For your safety, please be careful when do connecting work.

11 LIMITER SWITCH

Set the switch at "ON" position, when the output level is above maximum, the clip begins, thus keeping consistent output level for protecting apparatus. If the switch is set at "OFF" position, this clip function doesn't work.

12 BALANCED INPUT CONNECTOR

These connectors connect the input signal of CH 1 and CH 2 separately.

13 BALANCED OUTPUT CONNECTOR

These two output connectors are parallelled inside with input connectors. It enables the unit work under parallelled mode. Please also refer to wiring diagram for parallelled mode.

3

SPO

TLIGHT

3. CONTROL ELEMENTS

14 MODE SELECTOR

The MISTRAL 900/1500 power amplifiers present two operating modes:

-

Stereo Mode

In this mode, CH 1 and CH 2 operate independently (as a normal stereo amplifier).

The CH 1 input signal will be output from the CH 1 output connector, and CH 2 input signal will be output from the CH 2 output connector.

-

Bridge Mode

In this mode, CH 1 input signal will be output from the bridge-mono output connector.

On the other hand, the output level control of CH 2 should be turned to the minimum.

4

4. APPLICATION

The MISTRAL 900/1500 amplifiers provide two operating modes: stereo mode and bridge mode, you can decide each specific operating mode according to your actual application circumstance. Please see following diagram for connecting the power amplifier into your audio system.

- Stereo Mode

In this mode, CH 1 and CH 2 operate independently (as a conventional stereo amplifier).

The CH 1 input signal will be output from the CH 1 output connectors, and the CH 2 input signal will be output from the CH 2 output connectors.

Input Connector

Balanced

1

3

2

INPUT

GND

CH 1

+

MODEL

SERIAL

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

3

2 1

INPUT

NEW TIDE

3

2 1

2

3

1

PARALLEL

OUTPUT

2

3

1

POWER OUTPUTS

CH1

1+ 1-

POS NEG

CH2

2+ 2-

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

CH1

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

BREAKER

CH2

Stereo Mode

Release this button

CH 2 CH 1

CH 2

+

5

4. APPLICATION

- Stereo Mode

Input Connector

Balanced

1

2

3

INPUT

GND

MODEL

SERIAL

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

3

2 1

INPUT

NEW

3

2

TIDE

1

2

3

1

PARALLEL

OUTPUT

2

3

1

MODE

POWER OUTPUTS

1+

CH1

1-

POS NEG

LIMITER

2+

CH2

2-

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

CH1

BRIDGE

MONO

CH2

BREAKER

Stereo Mode

Release this button

CH 2 CH 1

CH 1

+

CH 2

+

6

4. APPLICATION

- Stereo Mode

You can also operate the parallelled mode via outside wiring, so the signal input from

CH 1 or CH 2 will be output from both CH 1 and CH 2 simultaneously. The volume of

CH 1 or CH 2 can be controlled separately.

Input Connector

Balanced

1

2

3

GND

INPUT

CH 1

+

MODEL

SERIAL

Stereo Mode

Release this button

CH 2

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

3

2 1

INPUT

NEW TIDE

3

2 1

2

3

1

PARALLEL

OUTPUT

2

3

1

POWER OUTPUTS

CH1

1+ 1-

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

POS NEG

CH2

2+ 2-

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

CH1

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

BREAKER

CH2

CH 2

7

4. APPLICATION

- Stereo Mode

Input Connector

Balanced

1

2

3

GND

INPUT

MODEL

SERIAL

Stereo Mode

Release this button

CH 2

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

2

3

1

INPUT

NEW TIDE

2

3

1

2

3

1

PARALLEL

OUTPUT

2

3

1

POWER OUTPUTS

CH1

1+ 1-

POS NEG

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

2+

CH2

2-

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

CH1

BRIDGE

MONO

CH2

BREAKER

CH 1

+

CH 2

+

8

4. APPLICATION

- Stereo Mode

Input Connector

Balanced

1

3

2

INPUT

GND

CH 1

+

MODEL

SERIAL

Stereo Mode

Release this button

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW

3

TIDE

2 1

INPUT

NEW TIDE

3

2 1

2

3

1

PARALLEL

OUTPUT

2

3

1

POWER OUTPUTS

1+

CH1

1-

POS NEG

CH2

2+ 2-

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

CH1

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

BREAKER

CH2

CH 1

CH 2

9

4. APPLICATION

- Stereo Mode

Input Connector

Balanced

1

2

3

INPUT

GND

MODEL

SERIAL

Stereo Mode

Release this button

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

3

2 1

INPUT

NEW TIDE

3

2 1

2

3

1

PARALLEL

OUTPUT

2

3

1

POWER OUTPUTS

CH1

1+ 1-

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

POS NEG

CH2

2+ 2-

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

CH1

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

BREAKER

CH2

CH 1

CH 1

+

CH 2

+

10

4. APPLICATION

- Bridge Mode

In this mode, the CH 1 input signal will be output from the bridge output connector.

On the other hand, the output level control of CH 2 should be turned down to smallest

(turn the volume control at counterclockwise). Only the volume control of CH 1 is used to control the volume of the whole system.

Input Connector

Balanced

1

3

2

INPUT

GND

MODEL

SERIAL

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

2

3

1

INPUT

NEW TIDE

2

3

1

2

3

1

PARALLEL

OUTPUT

2

3

1

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

POWER OUTPUTS

CH1

1+ 1-

POS NEG

CH2

2+ 2-

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

CH1

BRIDGE

MONO

CH2

BREAKER

CH 1

Bridge Mode

Press this button

CH 2

CH 1

11

4. APPLICATION

- Bridge Mode

Input Connector

Balanced

1

2

3

INPUT

GND

MODEL

SERIAL

Bridge Mode

Press this button

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

CH1

TIP/PIN 2

RING/PIN 3

SLEEVE/PIN 1

NEW TIDE

3

2 1

INPUT

NEW TIDE

3

2 1

2

3

1

PARALLEL

OUTPUT

2

3

1

POWER OUTPUTS

CH1

1+ 1-

MODE

STEREO

BRIDGE

LIMITER

OFF

ON

POS NEG

CH2

2+ 2-

POS NEG

BRIDGE

1+ 2+

POS NEG

OUTPUT1

1+

CH2

1-

POS NEG

CH2

PARALLEL

OUTPUT

OUTPUT2

CH1

Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk

BREAKER

CH2

CH 1

CH 2

CH 1

12

6. WARRANTY

1. WARRANTY REGISTRATION CARD

To obtain Warranty Service, the buyer should first fill out and return the enclosed

Warranty Registration Card within 10 days of the Purchase Date.

All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to provide a more effective and efficient after-sales warranty service. Please fill out all the information carefully and genuinely, miswriting or absence of this card will void your warranty service.

2. RETURN NOTICE

2.1 In case of return for any warranty service, please make sure that the product is well packed in its original shipping carton, and it can protect your unit from any other extra damage.

2.2 Please provide a copy of your sales receipt or other proof of purchase with the returned machine, and give detail information about your return address and contact telephone number.

2.3 A brief description of the defect will be appreciated.

2.4 Please prepay all the costs involved in the return shipping, handling and insurance.

3. TERMS AND CONDITIONS

3.1

LTO warrants that this product will be free from any defects in materials and/or workmanship for a period of 1 year from the purchase date if you have completed the Warranty Registration Card in time.

3.2 The warranty service is only available to the original consumer, who purchased this product directly from the retail dealer, and it can not be transferred.

3.3 During the warranty service, LTO may repair or replace this product at its own option at no charge to you for parts or for labor in accordance with the right side of this limited warranty.

3.4 This warranty does not apply to the damages to this product that occurred as the following conditions:

Instead of operating in accordance with the user's manual thoroughly, any abuse or misuse of this product.

Normal tear and wear.

The product has been altered or modified in any way.

Damage which may have been caused either directly or indirectly by another product / force / etc.

Abnormal service or repairing by anyone other than the qualified personnel or technician.

And in such cases, all the expenses will be charged to the buyer.

3.5 In no event shall LTO be liable for any incidental or consequential damages.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you.

3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also have other statutory rights that may vary from state to state.

14

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 manual without written permission is forbidden. Copyright c

2007 Seikaku Group

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