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.
1.
Read this Manual carefully before operation.
Keep this Manual in a safe place.
2.
Be aware of all warnings reported
3.
with this symbol.
4.
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
7.
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
8.
periods of time or during a storm.
Refer all service to qualified service personnel
9.
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.
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
2700 watt EIAJ on 4 ohms for MISTRAL 2500
21000 watt EIAJ on 4 ohms for MISTRAL 4000
21400 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
1
SPOTLIGHT
Front panel
3. CONTROL ELEMENTS
23
OPERATING/
PROTECTION
POWERON
2500
CH2
CLIP
LIMIT
R
LTO
6
5
1
POWER SWITCH
CH1
ON
OFF
POWER
14
StereoPower Amplifier
It switches the MISTRAL stereo power 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
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.
5
POWER LED
This LED lights up when the unit is powered on.
6
LEVEL CONTROL (For CH1&CH2)
Adjust the output signal level to avoid signal distortion.
2
SPOTLIGHT
Rear panel
3. CONTROL ELEMENTS
9
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
CH1
BRIDGE
MONO
CH2
8
INPUTINPUT
PARALLEL
OUTPUT
7
COOLING FAN
12
13
7
CH1
NEW TIDE
21
BALANCED
INPUT
12
POWER OUTPUTS
CH1
1+ 1-
POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1-
POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
SLEEVE/PIN1
3
LIMITER
OFF
ON
11
10
12
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
132
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
14
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.
8
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.
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
to restore normal working conditions.
OUTPUT CONNECTOR
10
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.
3
SPOTLIGHT
LIMITER SWITCH
11
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
12
These connectors connect the input signal of CH 1 and CH 2 separately.
BALANCED OUTPUT CONNECTOR
13
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
14
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
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.
INPUTINPUT
132
PARALLEL
OUTPUT
Stereo Mode
Release this button
Input Connector
Balanced
GND
1
3
2
INPUT
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
CH 2CH 1
CH1
NEW TIDE
21
BALANCED
INPUT
+
CH 1
POWER OUTPUTS
CH1
1+ 1-
POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1-
POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
SLEEVE/PIN1
3
LIMITER
OFF
ON
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
+
CH 2
5
- Stereo Mode
INPUT
INPUTINPUT
PARALLEL
OUTPUT
Stereo Mode
Release this button
4. APPLICATION
Input Connector
Balanced
GND
1
3
2
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
132
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
CH1
NEW TIDE
21
BALANCED
INPUT
POWER OUTPUTS
CH1
1+ 1-
POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1-
POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
SLEEVE/PIN1
3
LIMITER
OFF
ON
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
CH 1CH 2
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.
1
2
INPUT
INPUTINPUT
132
PARALLEL
OUTPUT
Stereo Mode
Release this button
Input Connector
Balanced
GND
3
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
CH 2
NEW TIDE
21
BALANCED
+
CH 1
POWER OUTPUTS
CH1
1+ 1-
POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1-
POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
CH1
SLEEVE/PIN1
3
LIMITER
OFF
ON
INPUT
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
CH 2
7
- Stereo Mode
INPUTINPUT
132
PARALLEL
OUTPUT
Stereo Mode
Release this button
4. APPLICATION
Input Connector
Balanced
GND
1
3
2
INPUT
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
NEW TIDE
21
BALANCED
POWER OUTPUTS
CH1
1+ 1POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
CH1
SLEEVE/PIN1
3
LIMITER
OFF
ON
INPUT
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
CH 2
CH 1
CH 2
+
+
8
- Stereo Mode
4. APPLICATION
+
Input Connector
1
3
2
INPUT
INPUTINPUT
132
PARALLEL
OUTPUT
Stereo Mode
Release this button
Balanced
GND
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
CH 1
CH1
NEW TIDE
21
BALANCED
INPUT
CH 1
POWER OUTPUTS
CH1
1+ 1POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
SLEEVE/PIN1
3
LIMITER
OFF
ON
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
CH 2
9
- Stereo Mode
INPUT
INPUTINPUT
132
PARALLEL
OUTPUT
Stereo Mode
Release this button
4. APPLICATION
Input Connector
Balanced
GND
1
3
2
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
CH1
NEW TIDE
21
BALANCED
INPUT
POWER OUTPUTS
CH1
1+ 1-
POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1-
POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
SLEEVE/PIN1
3
LIMITER
OFF
ON
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
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 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
1
3
2
INPUT
POWER OUTPUTS
INPUTINPUT
132
PARALLEL
OUTPUT
Bridge Mode
Press this button
TIP/PIN2
RING/PIN3
SLEEVE/PIN1
MODE
CH1
1+ 1-
POS NEG
INPUT
CH2
NEW TIDE
3
21
STEREO
BALANCED
BRIDGE
INPUT
CH1
NEW TIDE
21
BALANCED
INPUT
3
TIP/PIN2
RING/PIN3
SLEEVE/PIN1
LIMITER
INPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1-
POS NEG
3
OFF
PARALLEL
ON
OUTPUT
OUTPUT2
CH2
2+ 2-
POS NEG
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
CH 1
CH 2
CH 1
11
- Bridge Mode
1
3
2
INPUT
INPUTINPUT
132
PARALLEL
OUTPUT
Bridge Mode
Press this button
4. APPLICATION
Input Connector
Balanced
GND
INPUT
TIP/PIN2
RING/PIN3
CH2
SLEEVE/PIN1
NEW TIDE
3
21
MODE
STEREO
BALANCED
BRIDGE
INPUT
NEW TIDE
21
BALANCED
INPUT
POWER OUTPUTS
CH1
1+ 1-
POS NEG
CH2
2+ 2-
POS NEG
INPUT
PARALLEL
OUTPUT
BRIDGE
1+ 2+
POS NEG
OUTPUT1
CH2
12
1+ 1-
POS NEG
3
OUTPUT2
TIP/PIN2
RING/PIN3
CH1
SLEEVE/PIN1
3
LIMITER
OFF
ON
CH1
BRIDGE
MONO
CH2
BREAKER
MODEL
SERIAL
Apparatenskall anslutas
tilljordat uttag nar den
anslutstill ett natverk
CAUTION
RISKOF ELECTRIC SHOCK
DONOT OPEN
WARNING:SHOCK HAZARD
-DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
CAUTION:
REPLACEWITH THESAME TYPEFUSE AND RATING
DISCONNECTSUPPLY CORD BEFORECHANGING FUSE
-NE PASOUVRIR
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
3.1warrants 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 shallbe 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
LT O
14
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
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 2007 Seikaku Group
c
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