Alto Mistral-6000, Mistral-4000 Users Manual

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LTO

User's Manual

MISTRAL 2500/4000/6000

STEREO POWER AMPLIFIER

www.altoproaudio.com

Version 1.0 NOV. 2007

English

IMPORTANT SAFETY INSTRUCTION

CAUTION

RISK OFELECTRIC SHOCK

DO NOTOPEN

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.

Read this Manual carefully before operation. Keep this Manual in a safe place.

Be aware of all warnings reported

with this symbol.

Keep this Equipment away from water and moisture.

Clean it only with dry cloth. Do not use solvent or other chemicals.

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.

Refer all service to qualified service personnel

only. Do not perform any servicing other than those instructions contained within the User's Manual.

To prevent fire and damage to the product,

10.

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.

WARNING

To reduce the risk of electric shock and fire, do not expose this equipment to moisture or rain.

Dispose of this product should notbeplacedinmunicipalwaste and should be separate collection.

Move this Equipment only with a cart,

11.

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

8 6 4 3 2 1,5 1 0,5 0,25 or less

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.

EXAMPLE

SPL

Small gig

train

Subway train

High level desktop monitors

Classic music concert

100 102 105 110 115

Rock concert

IN THIS MANUAL:

1. INTRODUCTION.........................................................................1

2. FEATURES................................................................................1

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

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

5. TECHNICAL SPECIFICATIONS

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

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

1. INTRODUCTION

Thank you for purchasing one of our MISTRAL stereo power amplifier.

The MISTRIAL 2500/4000/6000 are the line of high power, low profile, professional power amplifiers with advanced features and great reliability. An automatic speed fan matches cooling capacity with heat requirements. The amplifiers contains two independent channels, with separate AC transformer secondaries, power supplies and protections 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 MISTRAL stereo power amplifier and make sure to read this Manual carefully before operation.

2. FEATURES

Mountable in a 19" rack unit, 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 2 700 watt EIAJ on 4 ohms for MISTRAL 2500 2 1000 watt EIAJ on 4 ohms for MISTRAL 4000 2 1400 watt EIAJ on 4 ohms for MISTRAL 6000 Stereo (dual-channel) or bridge mono operating modes Balanced XLR inputs/parallel outputs to ensure noiseless long wiring Binding post and Neutrik Speakon 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, VDA6.1 certified management system

SPOTLIGHT

Front panel

3. CONTROL ELEMENTS

2 3

OPERATNG/ PROTECTON

POWERON

2500

CH2

CLP

LIMT

LTO

POWER SWITCH

CH1

OFF

POWER

1 4

StereoPower Amplifier

It switches the MISTRAL stereo power amplifier ON and OFF.

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.

OUTPUT LIMITER LED

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

OPERATION AND PROTECTION LED

In normal operation, the LED is green; If the LED is red, it means the unit is in heat protection, no signal output at the time and over-heat inside the unit (the surface temperature of power transistor is 110 ), the temperature must be lowered through better ventilation and decrease the signal level etc. After the temperature dropped, the protection stop and meanwhile the LED turns off with the unit recover normal work.

POWER LED

This LED lights up when the unit is powered on.

LEVEL CONTROL (For CH1&CH2)

Adjust the output signal level to avoid signal distortion.

SPOTLIGHT

Rear panel

3. CONTROL ELEMENTS

BREAKER

MODE

ERIA

Appaaten s all nsutas t l jo dat u t g den ansu s il e t na ve k

CAUTION

WARNNG SHOCKH ZARD

DON TO EN

AVS RI QUE DE CH C LEC RQUE

CAUTON:

RE LA E W H HE S METY EFU EAND R T NG DSC NNE TSU PLY ORDBE ORE HANG G US

EP SOU R R

CH1

BRDGE MONO

CH2

NPUT INPUT

PARALLEL

OUTPUT

COOLING FAN

CH1

NEW TDE

BALANCED

NPUT

CH1

1+ 1-

POS NEG

CH2

2+ 2-

NPUT

PARALLEL

OUTPUT

BRDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

OUT UT2

TP PIN 2 RINGP N 3 SLEEVE/PN 1

LM TER

O F ON

INPUT

TP PIN 2 RINGP N 3

CH2

SLEEVE/PN 1

132

NEW TDE

T REO

BALANCED

RDGE

NPUT

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

NOTE:

For MISTRAL 2500/4000, the fans are on the rear panel. For MISTRAL 6000, the fan is on the front panel.

a. IEC SOCKET FOR AC POWER CABLE (For MISTRAL 2500/4000)

Connect the supplied main cord. Do not insert the power cord into the MISTRAL stereo power amplifier and into the AC Outlet until voltage has been correctly set.

b. POWER CORD (Only for MISTRAL 6000)

This is an IEC power cord. You can connect the plug of power cord to the mains. Please make sure the voltage accepted by the unit.

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 to restore normal working conditions.

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.

SPOTLIGHT

LIMITER SWITCH

3. CONTROL ELEMENTS

Set the switch at "ON" position, once 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.

BALANCED INPUT CONNECTOR

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

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 paralleled mode.

MODE SELECTOR

The MISTRAL stereo 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 turn to the minimum.

4. APPLICATION

The MISTRAL stereo power 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 NPUT

132

PARALLEL

OUTPUT

Stereo Mode

Release this button

Input Connector

Balanced

GND

INPUT

TIPPIN 2 RING/PN 3

CH2

SLEEVEPIN 1

EW TDE

TER O

BALANCED

RIDGE

INPUT

CH 2 CH 1

CH1

NEW TDE

BALANCED

NPUT

CH 1

CH1

1+ 1-

POS NEG

CH2

2+ 2-

INPUT

PARALLEL

OUTPUT

BRDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

OUTPUT2

TIPPIN 2 RING/PN 3 SLEEVEPIN 1

LIMTER

OFF ON

CH1

BRIDGE MONO

CH2

BREAKER

MODE

SERA

A para en ska l an luas tll odat u tag n rd n ansuts t le t nat erk

CAUTON

W RN NG HOCK HA ARD VS RSQ EDE CHOC E ECT IQ E

CAUTION:

EP ACE WTH HESAME YPE USE ND RAI G I CON ECT UP LYCO DBE ORECH NGNG F SE

ONO OP N

NE AS U RR

CH 2

- Stereo Mode

INPUT

4. APPLICATION

Input Connector

Balanced

GND

NPUT INPUT

132

PARALLEL

OUTPUT

Stereo Mode

Release this button

TIPPIN 2 RING/PN 3 SLEEVE/PN 1

CH1

1+ 1-

POS NEG

INPUT

CH2

NEW

TDE

STE EO

BALANCED

RDGE

NPUT

CH1

NEW TDE

BALANCED

NPUT

TP PIN 2 RING/PN 3 SLEEVE/PN 1

LM TER

NPUT

BRDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

O F

PARALLEL

OUTPUT

OUTPUT2

CH2

2+ 2-

CH1

BRDGE MONO

CH2

BREAKER

MODE

ERIA

Appaaten sk ll nsutas tl jodat u tag na den ansuts il e t n ve k

RSK O EL C RCSH CK

DON TO EN

WARNNG SHOCKH ZARD

DON TO EN

AVS I QUEDE CHOC LEC RQUE

CAUTON:

RE LACE W H HE S ME TY EFU EAND R T NG DSCO NE TSUP LY ORDBE OREC ANGNG USE

EP SOU R R

CH 1CH 2

CH 1

CH 2

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

INPUT INPUT

132

PARALLEL

OUTPUT

Stereo Mode

Release this button

Input Connector

Balanced

GND

NPUT

TP/P N 2 RNG PIN 3

CH2

SLEEVEPIN 1

N W IDE

S EREO

BALANCED

BRDGE

INPUT

CH 2

N W I E

BALANCED

CH 1

CH1

1+ 1-

POS NEG

CH2

2+ 2-

INPUT

TP/P N 2 RNG PIN 3

CH1

SLEEVEPIN 1

IMI ER

INPUT

BRIDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

PARALLEL

OUTPUT

OUTPUT2

CH1

B IDGE MONO

CH2

BREAKER

MODEL

SERAL

App ra en ska l ans u as il ordt ut agn r den a slu s t l ettn tvrk

CAUTON

WA NI G SH CK HAZ RD

DO OT PEN

A IS RSQUE DE HOC EL CTR QUE

CAUTION:

R PL CE W TH T E AME YPE F SEA D ATNG DS ONN CT S PP YCORD EFO ECHA GNG FUE

NE ASO V IR

CH 2

- Stereo Mode

4. APPLICATION

Input Connector

Balanced

GND

INPUT

INPUT NPUT

132

PARALLEL

OUTPUT

Stereo Mode

Release this button

TIPPIN 2 RING/PN 3 SLEEVEPIN 1

CH1

1+ 1-

POS NEG

INPUT

CH2

TI E

TER O

BALANCED

RIDGE

INPUT

NEW TDE

BALANCED

CH1

NPUT

TIPPIN 2 RING/PN 3 SLEEVEPIN 1

LIMTER

INPUT

BRDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

OFF

PARALLEL

OUTPUT

OUTPUT2

CH2

2+ 2-

CH1

BRIDGE MONO

CH2

BREAKER

MODE

SERA

A para en ska l an luas tll odat u tag nar d n ansuts t le t n terk

CAUTON

I K OF L CTI SH CK

ONO OP N

W RN NG HOCK HA ARD VS RSQ EDE CHOC E ECT IQ E

CAUTION:

EP ACE WTH HESAME YPE USE ND RAI G I CON ECT UP LYCO DBE ORECH NGNG F SE

ONO OP N

NE AS U RR

CH 2

CH 1

CH 2

- Stereo Mode

4. APPLICATION

Input Connector

INPUT

INPUT NPUT

132

PARALLEL

OUTPUT

Stereo Mode

Release this button

Balanced

GND

INPUT

TIPPIN 2 RING/PN 3

CH2

SLEEVEPIN 1

EW TDE

TER O

BALANCED

RID E

NPUT

CH 1

CH1

NEW TDE

BALANCED

CH 1

CH1

1+ 1POS NEG

CH2

2+ 2-

NPUT

PARALLEL

OUTPUT

BRDGE

1+ 2+ POS NEG

OUTPUT1

CH2

1+ 1POS NEG

OUTPUT2

TIPPIN 2 RING/PN 3 SLEEVEPIN 1

LIMTER

OFF ON

NPUT

CH1

BRIDGE MONO

CH2

BREAKER

MODE

SERA

A para en ska l an luas tll odat u tag nar d n ansuts t le t nat erk

I K OF L CTI SH CK

ONO OP N

W RN NG HOCK HA ARD VS RSQ EDE CHOC E ECT IQ E

CAUTION:

EP ACE WTH HESAME YPE USE ND RA NG I CON ECT UP LYCO DBE ORECH NGNG F SE

ONO OP N

NE AS U RR

CH 2

- Stereo Mode

INPUT

4. APPLICATION

Input Connector

Balanced

GND

INPUT NPUT

132

PARALLEL

OUTPUT

Stereo Mode

Release this button

TIPP N 2 RNG/P N 3 SLEEVEPIN 1

B IDGE

CH1

1+ 1-

POS NEG

INPUT

CH2

N W I E

TEREO

BALANCED

INPUT

CH1

BALANCED

INPUT

EW TDE

TIPPIN 2 RNG/P N 3 SLEEVEPIN 1

LIMTER

INPUT

BRIDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

OFF

PARALLEL

OUTPUT

OUTPUT2

CH2

2+ 2-

CH1

BRIDGE MONO

CH2

BREAKER

MODEL

SERAL

Ap ara en ska l an luas il ordt ut agnarden nsl ts t let n erk

I K OF LE TIC HO K

ONO OP N

WA N NG S OCKHAZ RD

VS RSQ E E CHOC E ECTRQUE

CAUTION:

EP ACE WTHT ESAME YPE USE A D RA I G I CON ECT UPP YCO D EF RECH NGNG F SE

ONOT P N

NE AS UV R

CH 1

CH 2

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 minimum (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

GND

INPUT

NPUT NPUT

132

PARALLEL

OUTPUT

Bridge Mode

Press this button

TIPPIN 2 RING/PN 3 SLEEVE/PN 1

CH1

1+ 1-

POS NEG

INPUT

CH2

NEW TDE

STER O

BALANCED

RI GE

NPUT

CH1

NEW TDE

BALANCED

NPUT

TIPPIN 2 RING/PN 3 SLEEVE/PN 1

LM TER

NPUT

BRDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

O F

PARALLEL

OUTPUT

OUTPUT2

CH2

2+ 2-

CH1

BRDGE

MONO

CH2

BREAKER

MODE

S RIA

Appar ten sk ll nsl tas tl jodat u tag nar en ansuts il e t n verk

SKO EL C RCSH CK

DON TOP N

WARNNG HOCK HA ARD AVS IS UEDE CHOC E EC RI UE

CAUTON:

EP ACE WTH HES METY E FU EAND R TNG SCO NECT UPLY C RD BE OREC ANGNG USE

ON TOP N

N PA OU RR

CH 1

CH 2

CH 1

- Bridge Mode

INPUT

4. APPLICATION

Input Connector

Balanced

GND

INPUT NPUT

INPUT

TIPPIN 2 RNG/P N 3

CH2

SLEEVEPIN 1

132

EW I E

TEREO

OUTPUT

BALANCED

B IDGE

INPUT

PARALLEL

Bridge Mode

Press this button

CH 1

BALANCED

CH1

1+ 1-

POS NEG

CH2

2+ 2-

INPUT

PARALLEL

OUTPUT

BRIDGE

1+ 2+

POS NEG

OUTPUT1

CH2

1+ 1-

POS NEG

OUTPUT2

TIPPIN 2 RNG/P N 3

CH1

SLEEVEPIN 1

EW TDE

LIMTER

OFF

NPUT

CH1

BRIDGE

MONO

CH2

BREAKER

MODE

SERA

Ap ara en ska l an luas

ll or atut ag nar den nsuts t let naterk

I K OF LE TIC HO K

ONO OP N

W RN NG S OCKHA ARD

VS RSQ EDE CHOC E ECT IQ E

CAUTION:

EP ACE WTHT ESAME YPE USE NDRA I G I CON ECT UPP YCO DBEF RECH NGNG F SE

ONO OP N

NE AS UV R

CH 2

CH 1

5. TECHNICAL SPECIFICATIONS

TYPE

Stereo Mode (4 ohms)

(EIAJ)

Stereo Mode (4 ohms)

(RMS)

Distortion (SMPTE IM)

Frequency Response

Damping Factor (8 ohms) 1 kHz and below

Signal to Noise, 20 Hz 20 kHz

Voltage Gain

Input Sensitivity @ 4 ohms

Input Clipping

Input Impedance

Controls

Indicators (1 per channel)

Connectors, each channel

Cooling

Load Protection

Power Requirements

Dimensions(L W H)

MISTRAL 2500 MISTRAL 6000

700 W

580 W x2

<0.05%

20 Hz 20 kHz 1 dB, 3 dB points: 10 Hz 60 kHz

>300

102 dB

40 x (32 dB)

1 Vrms

10 Vrms (+22 dB)

10 K Ohms unbalanced, 20K ohms balanced 56 (36 dB)

FRONT: AC SWITCH, CH1 & CH2 GAIN KNOBS REAR: LIMITER, BRIDGE SELECTOR

Power On: Blue LED Operation/Protection: Dual Color (Green/Red LED) Limit: Red LED Clip: Red LED

Input: Active balanced XLR Parallel Output: XLR Output: NEUTRIK Speakon and Binding posts

Continuously variable speed fan, rear to front air flow

On/off muting, DC fault load grounding relay, internal fault fuses

200 240 (100 120) Vac 50~60 Hz

400 483 89 mm 400 483 89 mm

18.1 KgNet Weight

MISTRAL 4000

1000 W

850 W x2 1100 W x2

<0.05% <0.05%

>300 >400

102 dB 110 dB

40 x (32 dB) 40 x (31 dB)

1 Vrms 6 Vrms

10 Vrms (+22 dB) 10 Vrms (+22 dB)

20.3 Kg 27.5 Kg

1400 W

453 483 133 mm

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 warrants that this product will be free from any defects in materials

LT O 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, 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 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.

LT O

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

SEIKAKU TECHNICAL GROUP LIMITED

http://www.altoproaudio.com Tel: 886-4-22313737

email: alto@altoproaudio.com Fax: 886-4-22346757

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

Alto Mistral-6000, Mistral-4000 Users Manual

Specifications and Main Features

Frequently Asked Questions

User Manual