User`s Manual - invask2010.ru
Contents
1. 2 2 WARRANT 1 INTRODUCTION ALTO 400 4 DRAGONFLY is D class digital power amplifier with advanced Features and great efficiency It delivers tremendous power a small space providing high level performance even under the most demanding conditions The amplifier contains four independent channels with separate power supplies and protection system Each channel has independent protective circuitry against open circuit short circuit mismatched loads and over temperature Thanks to the use of selected and expensive components the performance of A400 4 DRAGONFLY is worth much more than its price 2 FEATURES 1 5 U height 1 2 rack space four channel high power amplifier Fantastic audio quality even with extremely high volume levels Solid and durable can be mounted into a cabinet User controllable limiter e 4x 120Watts on 4 ohms 4 x 65 Watts 8 ohms Balanced XLR inputs and 1 4 TRS jack to ensure noiseless long wiring 1 4 TS jack connectors for output Front panel LED indicators for Clip Limit Power and Signal e Accurate gain control Independent thermal overload protection on each channel automatically protects amplifier and speakers Single channel over heat protection 3 CONTROL ELEMENTS 3 1 Front Panel 4400 4 24 16 24 LIMIT ne sic Gp R T 2 ig 202. 24 CLIP 16 POVIER CH3 30 30 ao 28 30 Power LED This LED lights up when the unit is powered on Power Switch Turn the unit on or off 3 Level Control for Channels 1 amp 2 amp 3 amp 4 Adjust the output signal level of respective channel Clip LED When the LED lights up it means the output level of signal is too high and it is time to reduce the signal level until Clip LED turns off Limit LED While the unit is limiting the output signal the LED lights up 6 Signal LED When there are signals present in this unit the LED lights up or it will be off 3 2 Rear Panel AC INPUT 210 240V 50 60Hz FUSE T6 3AL 250V Power C CH3 LIMITER OFF CH2 CH4 LIMITER LIMITER DOFF B OFF ON SP TIP SP SLEEVE MIN ON SP TIP SP SLEEVE 40 5 N OWER OUTPUT EAKER LOAD Input Connector These connectors connect the input signal of these four channels separately Limiter Switch Set this switch of respective channel at ON position once the output level is above maximum output level the limiter begins thus keeping consistent output level of respective channel to protect apparatus If the switch is set at OFF the limiter doesn t work 0 Output Connector These 1 4 TS jack Connectors are used to connect with your speakers AC Input Use it to connect your A400 4 DRAGONFLY to the supplied
3. AC cord only Please check the voltage in your country before attempting to connect the unit with the main AC 4 Fuse Holder The fuse can protect the AC supplies circuit of the equipment CAUTION if there is something wrong with the fuse or the fuse needs to change use only the recommended fuse type as indica ted this unit If the fuse continues to blow after replacing disco ntinue using this unit before being repaired 4 TECHNICAL SPECIFICATION 62W 3W at THD 1 Input Sensitivity 4 ohms 3dBu Controls FRONT Power switch LEVEL knobs 4 ohms channel RMS REAR Four LIMITER Switches for channel 1 channel 4 Connectors of each channel 314mm x 208 5mm x 66 6mm Net Weight 3 8Kg WARRANTY 1 WARRANTY REGISTRATION CARD To obtain Warranty Service the buyer should first fill out and return the enclosed Wa rranty Registration Card within 10 days of the Purchase Date Indicators per channel Power On Green LED Clip Red LED Limit Yellow LED 7 All the information presented this Warranty Registration Card gives manufac turer a better understanding of the sales status so as to purport 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 t
4. User s Manual A400 4 DRAGONFLY DIGITAL POWER AMPLIFIER a LTO www altoproaudio com Version 1 1 February 2006 English SAFETY RELATED SYMBOLS CAUTION N RISK OF ELECTRIC SHOCK DO NOT OPE 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 1 This symbol wherever used alerts you to important operating and ma intenance instructions Please read Protective Ground Terminal AC mains Alternating Current h Hazardous Live Terminal ON Denotes the product is turned on OFF Denotes the product is turned off WARNING Describes precautions that should be observed to prevent the possibility of death or injury to the user CAUTION Describes precautions that should be observed to prevent damage to the product Disposing of this product should not be placed in municipal waste mm 219 should be separate collection WARNING Power Supply Ensure that the mains source voltage AC outlet matches the voltage rating of the product Failure to do so could result in damage to the product and possibly the user Unplug the product before electrical storms occur and when unused for long periods of time to reduce the risk of electric shock or fire External Connection Always use proper ready made insulated mains cabling pow
5. er cord Failure to do so could result in shock death or fire If in doubt seek advice from a registered electrician Do not Remove any Covers Within the product are areas where high voltages may present To reduce the risk of electric shock do not remove any covers unless the AC mains power cord is removed Covers should be removed by qualified service personnel only No user serviceable parts inside Fuse 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 Protective Ground Before turning the product ON make sure that it is connected to Ground This is to prevent the risk of electric shock Never cut internal or external Ground wires Likewise never remove Ground wiring from the Protective Ground Terminal Operating Conditions Always install in accordance with the manufacturer s instructions To avoid the risk of electric shock and damage do not subject this product to any liquid rain or moisture Do not use this product when in close proximity to water Do not install this product near any direct heat source Do not block areas of ventilation Failure to do so could result in fire Keep product away from naked flames IMPORTANT SAFETY INSTRUCTIONS Read these instructions Follow all instructions Keep these
6. he 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 co ntact telephone number 2 3 Abrief description of the defect will be appreciated 2 4 Please prepay all the costs involved in the return shipping handling and insur ance 3 TERMS AND CONDITIONS 3 1 ALTO 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 comple ted 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 ALTO 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 e Instead of operating in accordance with the user s manual thoroughly any ab use or misuse of this product Normal tear and wear e The product has been altered or modified in any way e Damage which may have been caused either directly or indirectly by another product force etc e Abnormal service or
7. ide you with world class designs while our software development teams continue to develop and impressive range of audio specific algorithms Because we are convinced you are the most important member of ALTO AUDIO TEAM and the one confirming the quality of our job we would like to share with you our work and our dreams pay attention to your suggestions and your comments Following this idea we create our products and we will create the new ones From our side we guar antee you and we will supply you also in future the best quality and the best fruits of our continuous researches and the best prices Our A400 4 DRAGONFLY is the result of many hours of listening and tests involving common people area experts musicians and technicians Nothing else to add but that we would like to thank all the people that made the L TO A400 4 DRAGONFLY a reality available to our customers thank our designers all the L TO staff there to make possible the realization of products containing our idea of music and sound and there to support you our customers in the best way conscious that you are our best richness Thank you very much ALTO AUDIO TEAM TABLE CONTENT 5 2 FEATURES 65 3 CONTROL ELEMENTS 7420 3 1 Front Panel 3 2 Rear Panel 4 TECHNICAL
8. instructions Do not discard Heed all warnings Only use attachments accessories specified by the manufacturer Power Cord and Plug Do not tamper with the power cord or plug These 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 Cleaning When required either blow off dust from the product or use a dry cloth Do not use any solvents such as Benzol or Alcohol For safety keep product clean and free from dust Servicing Refer all servicing to qualified service personnel only Do not perform any servicing other than those instructions contained within the User s Manual Preface Dear Customer Thanks for choosing ALTO A400 4 DRAGONFLY and thanks for choosing one of the results of ALTO AUDIO TEAM s endeavours For our ALTO AUDIO TEAM music and sound more than a job are first of all passion and let us say our obsession We have been designing professional audio products for a number of years in cooperation with many of the world s major brands in audio field The ALTO line presents unparalleled analogue and digital products made by Musicians for Musicians in our R amp D centers in Italy Netherlands United Kingdom and Taiwan We prov
9. 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 ALTO 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 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 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 2005 SEIKAKU GROUP 02317 1 1
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