Mistral 6000 User's Manual
Contents
1. INPUT OS ec EALANGCED INP DT Balanced POWER OUTPUTS CH1 e e OUTPUT1 A E N N JE I lay IEG CH2 2 2 POS NEG BRIDQE 1 2 POS NEG 1 O4 1 VW as O AX QT Ow N lt m JESAN SIR i d G i Oo Jg CTA N weet eee ee Input Connector OUTRUN Release this button annex Balanced LE output x gt x LESTER INPUT INPUT OUTPUT A OUTPUT2 ean 1 ce X a i sana 2 NO ce f i Channel 1 Channel 2 4 2 Bridge Mode In this mode the signal input into channel 1 will be output from the bridged end on other hand the output level control of channel 2 should be turn down to smallest turn the volume control at counterclockwise Only the volume control of channel 1 is used to control the volume of whole system weet eee e eee Input Connector Balanced Sy ey ey rq ie q E Q Q 4 ie q aN J JE I i Oo i a MODE Release this button PE Channel 2 4 Channel 1 wee e eee tees Input Connector Balanced NO os CE MODE r Release this button Channeli aaeain HALEP BELTER Channel 2 4 E r Er F Er ET one Channel 1 rereeer eee yt 5 TECHNICAL SPECIFICATIONS2. MODEL re Input aan 10Vrms 22dB Input Impedance Impedance 10K ohms unbalanced 20K ohms balanced 56 36dB ohms unbalanced 20K ohms balanced 56 36dB Controls ok sims wise Zohn Bleed 58608 AC SWITCH CH1 amp CH2 GAIN KNOBS REAR LIMITER BRIDGE SELECTOR Indicators 1 per channel Power On Blue LED Operation Protection Dual Color Green Red LED Limit Red LED Clip Red LED Connectors each channel Input Active balanced XLR Parallel Output XLR Output NEUTRIK Speakon and Binding posts Continuously variable speed fan rear to front air flow Load Protection On off muting DC fault load grounding relay Internal fault fuses Power Requirements 200 240 100 120 Vac 50 60Hz 19 48 3 cm rack mounting 5 2 13 3 cm tall 3 rack spaces 17 8 45 3 cm deep rack mounting to rear support ears PRELIMINART 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 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 pl
3. amplifier The signal input into channel 1 can be output from channel 1 only similarly the signal input into channel 2 can be output from channel 2 only MODE Release this button Channel 2 Input Connector Balanced MODE Release this button Channel 2 TT Channel 2 Channel 1 m CIN L 2 ae S D es A es Channel 1 INO POWER OUTPUTS N BREAKER CH1 e KT ey ETN 1 oN DON UTPUT1 ED m Tao ZERS QT N Se AR EHA NN BOS CED UTPUT2 ed Channel 1 Channel 1 Channel 2 You can also operate the paralleled mode via outside wiring so the signal input from channel 1 or 2 will be output from both channel 1 and 2 simultaneously The volume of channel 1 or channel 2 can be controlled separately MODE Release this button MODE Release this button were eee e ees Input Connector Balanced Channel 1 able OUTPUTS a cara carpe A Era KA CE aa TS oF eas OUTPUT2 i Channel 2 weeeliila TENE eeitt t f le ESEG 4 TeTTT TTT z Channel 2 DARA AMAR wee e neers Input Connector Balanced oe CA3 Channel 2 weeelitla TEREE RSEEigites 5 a je e peme ay i cetaeet a z LEETLELI Channel 1 Channel 2 MODE Release this button MODE wont e eee eee Input Connector
4. User s Manual MISTRAL6000 STEREO POWER AMPLIFIER C a LTO www altoproaudio com Version 1 0 April 2005 English SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN A A The symbol is used to indicate that some hazard ous live terminals are involved within this apparatus even under the normal operating conditions The symbol is used in the service documentation to indicate that a specific component shall be only replaced by the component specified in that docu mentation for safety reasons Protective grounding terminal Alternating current voltage 4 Hazardous live terminal ON Denotes the apparatus is turned on OFF Denotes the apparatus is turned off because it uses the single pole switch be sure to unplug the AC power to prevent any electric shock before you proceed with your service WARNING Describes precautions that should be observed to prevent the danger of injury or death to the user CAUTION Describes precautions that should be observed to prevent danger of the apparatus WARNING Power Supply Ensures the source voltage matches the voltage of the power supply before turning ON the apparatus Unplug this apparatus during lightning storms or when unused for long periods of time External Connection The external wiring connected to the output hazardous live terminals requires installation by an instru
5. and tests Involving common people area experts musicians and technicians The result of this effort is the sophisticated circuit design featuring high power and superb quality together with superior reliability and stability to provide the highest possible audio performance Nothing else to add but that we would like to thank all the people that made the ALTO MISTRAL6000 Stereo PowerAmplifier a reality available to our customers and thank our designers and all the ALTO 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 OF CONTENTS 1 INTRODUC HION ci ceva pavacie santa E aneusaapasdeessameceusveseuuranceesganemaneailes ates E E seuraosusmyecnrerscnezasnste 4 MEU RI aie ie E E sis smsie denise rion cincuit E 4 3 CONTROL ELEMENTS cenieni E E EEE EEE E 5 3 1 The Front Panel 3 2 The Rear Panel A PPP LIC A THON wacetececcce cee ceaeccetneactamaisasccescesedcadedacesceuteccesecacecaceciescnatenosesosegoansracesesatasntstensensennetdveecndeetecnes 8 4 1 Stereo Mode 4 2 Bridge Mode 5 TECHNICAL SPE GIP IG PilON Osc senenecresiecsincincesenamssencnuntanioensanaeasvsmnnnannaseant oereocsmeneiteeanntenseustpesasaances 11 O WARRANTY i tee oe eres am ew ete acm eee ste at ge me gen doa nye a a 12 1 ALTO MISTRAL6000 The ALTO MISTRAL is a line of high p
6. ck stereo high power amplifier e Fantastic audio quality even with extremely high volume levels e Solid and durable can be mounted into a cabinet e User controllable clip limiter e 2x1230 Watts EIAJ RMS on 4 ohms for MISTRAL6000 e Stereo dual channel or bridge mono operating modes e Balanced XLR inputs parallel outputs to ensure noiseless long wiring e Binding post and Neutrik Speak on connectors for output e Single channel bridge and bi amp output wiring possibility e Front panel LED indicators for operating protection limit power on and clip e Accurate gain control e Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers e Single channel over heat protection e Manufactured under QS9000 VDA 6 1 certified management system 3 CONTROL ELEMENTS 3 1 Front Panel ae ee ee O 0 1 Power Switch Turn the unit power on or 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 input level until clip led turning off 3 Output Limiter Led While the unit is limiting the output signal the Led lighting 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 po
7. cted person or the use of ready made leads or cords Do not Remove any Cover There are maybe some areas with high voltages inside to reduce the risk of electric shock do not remove any cover if the power supply is connected The cover should be removed by qualified personnel only No user serviceable parts inside Fuse To prevent a fire make sure to use fuses with specified standard current voltage type Do not use a different fuse or short circuit the fuse holder Before replacing the fuse turn OFF the apparatus and dis connect the power source Protective Grounding Make sure to connect the protective grounding to prevent any electric shock before turning ON the apparatus Never cut off the internal or external protective grounding wire or disconnect the wiring of protective grounding terminal Operating Conditions This apparatus shall not be exposed to dripping or spl ashing and that no objects filled with liquids such as vases shall be placed on this apparatus To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture Do not use this apparatus near water Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amp lifiers that produce heat Do not block any ventilation openings No naked flame sources such as lighted candles should be placed on the appa
8. ease 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 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 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 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 abuse or misuse of this product e 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
9. ower 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 amplifier frame contains all solid state circuitry using complementary silicon output devices The amplifier is supplied with a single moulded AC cord having an appropriate AC plug for the intended operating voltage The amplifier employs forced air cooling with a variable speed fan for minimum acoustic noise Air flow is from rear to front to avoid temperature rise inside the Rack The amplifier contains two independent channels with separate AC transformer secondaries power supplies and protection system All protection systems except the main AC one are self resetting upon removal of fault and the remaining channel shall continue to operate Each channel has independent protective circuitry against open circuit short circuit mismatched loads and over temperature Each channel has also a main LED that becomes green for power on indicator and red for muting or protection another red LED that shows true amplifier clipping and a yellow one for the Limiter stage The power outputs employ standard power connectors All the inputs are electronically balanced and an high quality audio transformer can be added on the input stage of each channel 2 FEATURES e 3U ra
10. ratus IMPORTANT SAFETY INSTRUCTIONS Read these instructions Follow all instructions Keep these instructions Heed all warnings Only use attachments accessories specified by the manu facturer Power Cord and Plug Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet Protect the power cord from being walked on or pinched particularly at the plug convenience receptacles and the point where they exit from the apparatus Cleaning When the apparatus needs a cleaning you can blow off dust from the apparatus with a blower or clean with a rag etc Don t use solvents such as benzol alcohol or other fluids with very strong volatility and flammability for cleaning the apparatus body Clean only with a dry cloth Servicing Refer all servicing to qualified personnel To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so Servicing is required when the apparatus has been dam aged in any way such as the power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparat
11. 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 ALTO be liable for any incidental or consequential damages Some states do not allow the exclu sion 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 SEKAKU ELECTRON INDUSTRY H K CO LTD 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 NF0O1939 1 0
12. us the apparatus has been exposed to rain or moisture does not operate normally or has been dropped Preface Dear Customer Thanks for choosing ALTO MISTRAL 6000 Stereo Power Amplifier and thanks for choosing one of The results of ALTO AUDIO TEAM job and researches For our ALTO AUDIO TEAM music and sound are more than a job are first of all passion and let us say our obsession We have been designing professional audio products for a long time in cooperation with some of the major brands in the world in the 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 The core of our digital audio products is a sophisticated DSP Digital Sound Processor and a large range of state of the art algorithms which have been developed by our Software Team for the last 7 years Because we are convinced you are the most important member of ALTO AUDIO TEAM and the one confirming the quality of our job we d like to share with you our work and our dreams paying 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 guarantee you and we will guarantee you also in future the best quality and the best fruits of our continuous researches and the best prices Our ALTO MISTRAL6000 Stereo Power Amplifier is the result of many hours of listening
13. vel is above maximum output level the clip begin thus keeping consistent output level for protecting apparatus If the switch is set at OFF this clip function doesn t work 42 Balanced Input Connector These connectors connect the input signal of channel1 and channel 2 separately 43 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 Mode Selector Total two optional modes Up for Stereo mode Down for Bridge mode Stereo In this mode Channel 1 and Channel 2 operate independently just as traditional stereo amplifier The signal input into channel 1 can be output from channel 1 only similarly the signal input into channel 2 can be output from channel 2 only You can also operate the paralleled mode via outside wiring so the signal input from channel 1 or 2 will be output from both channel 1 and 2 simultaneously Details refer to the chapter 4 Bridge In this mode the signal input into channel 1 will be output from the bridged end on other hand the output level control of channel 2 should be turn down to smallest 4 APPLICATION Total two optional modes Please see following diagram for connecting the power amplifier into your audio system 4 1 Stereo Mode In this mode Channel 1 and Channel 2 operate independently just as traditional stereo
14. wer transistor is 110 C 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 turning off with the unit recover normal work 5 Power Led This Led lights up when the unit is powered 6 Level Control for Channels 1 amp 2 Adjust the output signal level to avoid signal distortion 7 Fan The fan can accelerate the flow of air to lower the temperature inside unit The inside temperature determines the fan speed which controls the inside air flowing speed 3 2 Rear Panel s Ly NAA LIN A E A OQ oD LID L TY VY X 4 RSL 2 Power Cord You can connect the plug of power cord to the mains Please make sure the voltage accepted by the unit This is IEC power cord 9 Manual Reset Pushing Button This switch works as fuse for protecting the unit from damage When the unit is overloaded or the temperature inside the unit is too high this pushing button will spring up and break the power supply The power supply will be restored with pushing this switch down again 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 41 Limter Switch Set this switch at ON position once the output le
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