Mistral 1500 - Receiver ALTO - Free user manual and instructions

Product Type	Audio Receiver
Brand	ALTO
Model	Mistral 1500
Dimensions (W x H x D)	430 mm x 100 mm x 300 mm
Weight	5 kg
Power Supply	230V AC, 50Hz
Power Consumption	60 W
Frequency Range	FM 87.5-108 MHz, AM 530-1710 kHz
Audio Output Power	2 x 50 W RMS (stereo)
Inputs	AUX (RCA), Phono, Antenna (FM/AM)
Outputs	Speaker terminals, Headphone jack (3.5 mm)
Tuning	Manual and presets (30 FM, 30 AM)
Controls	Volume, Bass, Treble, Balance, Tuning knob
Display Type	Backlit LCD with frequency and station info
Remote Control	Included (battery CR2025)
Maintenance	Wipe with a soft, dry cloth. Do not use liquids.
Safety Precautions	Unplug before cleaning. Avoid moisture. Use only approved power source.
Spare Parts	Contact ALTO customer service for replacement parts.
Repairability	Service by qualified technician recommended.
Included Accessories	User manual, power cord, remote control, antenna cable
Warranty	2 years (subject to terms)

Frequently Asked Questions - Mistral 1500 ALTO

How do I connect external speakers to the Mistral 1500?

Connect your speakers to the speaker terminals on the back panel. Ensure proper polarity (+/-) and use speaker wire with appropriate impedance (4-8 ohms).

Can I play audio from my phone through this receiver?

Yes, use the AUX input (RCA) on the back. You may need a 3.5mm to RCA cable (not included). Select 'AUX' as the input source.

How do I preset radio stations?

Tune to a station, then press and hold one of the preset buttons (1-30) until you hear a beep. Repeat for other stations. You can store up to 30 FM and 30 AM presets.

The receiver has no sound. What should I check?

First, ensure the volume is turned up and the unit is not muted. Check that the input source is correct and cables are securely connected. Also verify that the speakers are properly connected and powered.

How do I clean the Mistral 1500?

Unplug the unit and wipe the surface with a soft, dry cloth. Do not use any liquid or abrasive cleaners. Avoid getting moisture into vents.

What type of batteries does the remote control use?

The remote requires a CR2025 lithium coin battery. Remove the battery compartment cover on the back, insert the battery with the positive side up, and close the cover.

Why can't I get any FM/AM stations?

Attach the supplied antenna to the FM/AM antenna terminals. For FM, extend the dipole antenna fully. For AM, loop the antenna and rotate it for best reception. Try rescanning or manual tuning.

Does the receiver support Bluetooth?

No, the Mistral 1500 does not have built-in Bluetooth. Use the AUX input with a Bluetooth receiver adapter (sold separately) for wireless streaming.

What is the maximum power output for speakers?

The receiver delivers 2 x 50 W RMS into 8 ohms. Use speakers with an impedance of 4 to 8 ohms and power handling at least 50 W.

How can I reset the Mistral 1500 to factory settings?

With the unit on, press and hold the 'Tuning' knob for 5 seconds until 'RESET' appears on the display. Confirm by pressing the knob again. All settings will be cleared.

USER MANUAL Mistral 1500 ALTO

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)

4 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.

2. Keep this Manual in a safe place.

3. Be aware of all warnings reported 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.

7. 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.

8. 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.

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.

WARNING

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

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

1. 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

Abstract black-and-white icon of a person pushing a large rectangular block within a circular frame (no text or symbols)

1. 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 SPL EXAMPLE

8	90	Small gig
6	92	train
4	95	Subway train
3	97	High level desktop monitors
2	100	Classic music concert
1,5	102
1	105
0,5	110

0,25 or less 115 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.

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.

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 × 300 Watt EIAJ on 4 ohms for MISTRAL 900
▲2 × 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 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.

Rear panel

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 paralleled inside with input connectors. It enables the unit work under paralleled mode. Please also refer to wiring diagram for paralleled mode.

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. 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.

- Stereo Mode

Input Connector

Balanced

- Stereo Mode

You can also operate the paralleled 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.

4. APPLICATION

- Stereo Mode

Input Connector

Balanced

- Stereo Mode

- Stereo Mode

Input Connector

Balanced

- 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.

- Bridge Mode

Input Connector

Balanced

5. TECHNICAL SPECIFICATIONS

TYPE	MISTRAL 900	MISTRAL 1500
Stereo Mode (4 ohms EIAJ)	250W x 2	540W x 2
Stereo Mode - (4 ohms RMS)	170W x 2	430W x 2
Stereo Mode - (8 ohms EIAJ)	170W x 2	UFW x 2
Stereo Mode - (8 ohms RMS)	130W x 2	250W x 2
Bridge Mode (8 ohms EIAJ)	500W x 1	100CW x 1
Bridge Mode - (8 ohms RMS)	340W x 1	BUCW x 1
Distortion (SMPTE-M)	<0.05%
Frequency Response	20Hz 20 kHz ± 1 dB, 3 dB points: 10 Hz 60 kHz
Damping Factor, 1 kHz arc below	>30C st. 8 ohms
Signal to Noise, 20Hz 20kHz	102 dB
Voltage Gain	40 x (32 dB)
Input Sensitivity @ 4 ohms	1 Vrms
Input Cpping	10 Vrms (+22 dB)
Input Impedance	10K ohms unbalanced, 20K ohms balanced 55 dBc dB
Controls	FRONT AC SWITCH, CHT & CH2 GAIN KNOSBRCAR: LIMITER, BRIDGE SELECTOR
Indicators (1 per channel)	Power-On: Blue LEDOperation/Protection: Dual Color (Yellow LED)Lim t: Yellow LEDClip: Red LED
Connectors, each channel	Input: Active balanced XLFParallel Output: XLROutput: NEUTRIK® Speakon and Birding posts
Cooling	Continuously variable-speed fan, rear-to-front air flow
Lead Protection	0-/off musing, 0-3-fault load gruncing re ay, interna faut fuses
Power Requirements	200 P40 (100 °C) Vac: 50-50 Hz
Dimensions	19" (40.3 cm) rack mounting, 3.5" (8.9 cm) ta (2 rack spaces)15.9" (40 cm) deo (rack mounting to rear support cars)
Net Weight	11 Kg	13 Kg

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 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 able 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.

SEIKAKU TECHNICAL GROUP LIMITED

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

http://www.altoproaudio.com Tel: [phone]

email: [e-mail] Fax: [phone]

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