MACRO 830/1400/2400
Contents
1. CHANNEL A Woo BRIDGED STEREO PARALLEL MONO Channel Channel Shea pee ERES Input wiring BALANCED UNBALANCED NO USING CHANNELA BRIDGED STEREO Channel B PIN 1 Channel PIN 1 PIN 1 5 3 Operate MACRO 830 1400 2400 in Bridged Mode In this mode the Channel A input signal will be output from the Bridge output connectors In this case use the Channel A volume control to adjust the volume keep the volume control of Channel B turned completely down counterclockwise Bridged Mode is intended for driving loads with a total impedance of 4 ohms or greater Input wiringtips BALANCED UNBALANCED NO USING CHANNELA BRIDGED en i EN MONO Channel oles Channel A T ss L NO USING 6 CAUTION FOR APPLICATION 6 1 General Application Instruction The following instructions describe the common ways to install your MACRO 830 1400 2400 Professional Stereo Amplifier into a sound application system 1 First turn off power switch before connection 2 Refer to Chapter 5 for speaker connection 3 MACRO 830 1400 2400 Professional Stereo Amplifier may be operated in one of the three modes please slide the Mode Selector 11 for the specific operating mode 6 2 Caution for Speaker Connection The output capac2. Users Manual MACRO 830 1400 2400 ampureR d MACROZADO PROFESSIONAL HIGH POWER STEREO AMPLIFIER o o www altoproaudio com Version 2 2 August 2004 English SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol wherever used alerts you to the pre sence of un insulated and dangerous voltages with in 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 impo rtant operating and maintenance instructions Please read Protective Ground Terminal 1 AC mains Alternating Current 4 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 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 7 External Connection Always use proper ready made insulated mains cabling power cord Failure to do so could r
3. lt lt l 2 MOVf 3NOHd t t i HOLO3NNOO LINDYID 3OLLON NOLLdO ZHO9 0S 0 o AOEZ AOZZ NOZ L OV P6 ZHOE O Q39Nv V8 NOLLdO uluoxs t H34JOOM ans gpr SINHASEL ON inani P6 ZHOE wa WHO 11 7 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 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 COND
4. 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 instruc tions contained within the User s Manual PREFACE Dear Customer Thanks for choosing A LTO MACRO 830 1400 2400 Professional High Power Stereo Amplifier and thanks for choosing one of the results of A LTO AUDIO TEAM job and researches For our A LTO 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 Ki
5. amplifier operation is resumed 3 2 The Rear Panel 12 6 7 INPUT P i AA EET ete e BALANCED 115VQ0kQ MONO x BRIDGED orr x CLIP LIMIT J CHANNELA CHANNELB BRIDGED INPUT 9 10 11 13 8 6 Breaker This breaker is used to protect the unit in replacement of fuse Press it to reset 7 AC Inlet This connector is meant for the connection of the supplied main cord Do not insert the power cord into this unit until voltage has been correctly set Do not plug the power cord into the mains until the voltage has been correctly set 8 Output Connectors The Output Connectors include the Speak on jacks and Binding post terminals you can use the specific Output connectors according to the actual application circumstance Be careful to connect the Output Connectors so as not to occur any problem Caution Turn off the unit before connecting the Output Connectors so as to avoid any electric shock 9 Balanced Input Connectors The Input Connectors include the balanced XLR servo connectors and 1 4 TRS phone jack For the extension to another amplifier connect these jacks to another amplifier input jacks 10 Clip Limit Switch While on the clip limit function specific to this machine keeps fixed output when the output exceeds the Max imum of the machine to protect its circuits While off there is no such limit 11 Mode Sel
6. ITIONS 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 A LTO 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 7 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 A LTO 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 ma
7. MPTE 1M 0 0396 0 0396 0 0396 S N ratio 100dB 100dB 100dB Full short circuit open circuit thermal ultrasonic and RF protection stable into reactive PROTECTIONS or mismatched loads turn ON OFF muting tried crowbar Front AC switch 40 detectinput level control for each channel CONTROLS Rear stereo parallel bridged selector 30Hz filter selector clip ON OFF selector INDICATORS SIGNAL 2x green LED CLIP 2x redLED POWER 1 green LED PROTECTION 1 red LED INPUT Active balanced XLR and 1 4 6 3mm TR S CONNECTORS OUTPUT Touch proof binding posts and speak on jacks POWER SUPPLY Available for 110 120V or 220 240V 50 60Hz DIMENSIONS 483 W x 400 D x 88 8 H mm WEIGHT 13 6kg 15 6kg 19kg 7 2 Block Diagram uMd S IVNIIWNH3 L 1SOd NOILdO O U avava 4 aasawa O 0 ONON V HO D 0 K gt 40193130 3Hd 1O0Hd gt ANauuno E HO p T SNVH L H3MOd o LJ Ww o mS lt t SLNAISNVYL AAO NYNL NO NYNL e LNAYYND LINDYID LHOHS H3AO 155330 90 5 90 MOOHS ome HOLOANNOO NOwvadas 0 0 HMd
8. ector The MACRO 830 1400 2400 Professional Stereo Amplifier presents three operating modes Stereo Mode In this mode Channel A and Channel B operate independently as a conventional stereo amplifier The Channel A input signal will be output from the Channel A output connectors and the Channel B input signal will be output from the Channel B output connectors Parallel Mono Mode In this mode the Channel A input signal will be output from the output connectors of both Channels detail wiring diagram you can refer to Chapter 5 Bridged Mode In this mode the Channel A input signal will be output from the Bridge output connectors detail wiring diagram you can refer to Chapter 5 12 LF 30Hz Filter Some large subsonic frequencies are present in the input signal and these can damage the consequent speaker systems by over loading or overheating This LF30Hz Filter is used to prevent this happening and add an appropriate low pass filter in the input circuit 13 Fan This fan releases the heating from the unit by accelerating the air circulation air flow from front to back and its speed is continuously variable 4 INSTALLATION amp CONNECTION 4 1 Mains Connection Do not insert the power cord into this unit until voltage has been correctly set Do not plug the power cord into the mains until the voltage has been correctly set Please ensure that the MACRO 830 1400 2400 Professional Stereo Amplifier is supplied with the correctvolta
9. esult 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 instructions Do not discard Heed
10. ge before turning on this unit If you can t power up this unit while turning on the Mains Switch 1 please check the Breaker 6 on the rear panel first maybe it is pressed to reset Otherwise contact the technician or qualified personnel for any service Caution To reduce the risk of electric shock do not perform any servicing other than contained in this manual unless you are qualified to do so Please turn off this unit before any installation and connection esp when you connect your unit into the sound system This is important to prevent damage to the unit itself as well as other consequent speaker system The mains connection of the MACRO 830 1400 2400 Professional Stereo Amplifier is made by using the enclosed power cord and a standard IEC receptacle and it meets all of the international safety certification requirements 4 2 Rack Mounting The most secure mounting is on a universal rack shelf available from various rack manufactures or your music dealer The MACRO 830 1400 2400 Professional Stereo Amplifier fits into one standard 19 rack unit of space Be sure that there is enough air space around the unit for sufficient ventilation If heat release is inadequate this unit will retain heat inside which may cause the protection or even a fire 4 3 Audio Connection The A LTO MACRO 830 1400 2400 Professional High Power Amplifier presents with balanced XLR connectors and 1 4 TRS phone jack and it can be interfaced by several ways to su
11. ity of out MACRO 830 1400 2400 Professional Stereo Amplifier is very high be sure to use a speaker System that has sufficient input capacity If the input capacity of your speaker system is lower than the rated output of the MACRO 830 1400 2400 Professional Stereo Amplifier you can protect your speakers by connecting a fuse serially between the speaker and the amplifier as shown below Speaker Output System MACRO2400 PROFESSIONAL HIGH POWER STEREO AMPLIFIER P 1 2 Use the following formula to determine the fuse capacity according to the speaker s input capacity 1 Po R Po W Speaker s continuous input capacity noise RMS R O Speaker s nominal impedance I A Required fuse capacity As to the speaker cable if you use a long one use as thick a cable as possible to prevent deterioration of the damping factor or power loss inside the cable 7 TECHNICAL SPECIFICATIONS 7 1 Specifications STEREO MODE ERIS 800 1400 Both channels driven 4 Ohms 300 450 750 20Hz 20KHz 8 Ohms 205 310 575 Bridge Mono Mode 8 Ohms 560 900 1500 20Hz 20kHz 4 Ohms 800 1400 2500 INPUT SENSITIVITY 1 15V 43 4dBu 1 15V 43 4dBu 1 15V 43 4dBu INPUTIMPEDANCE 10KO Unbalanced 20KQ Balanced FREQUENCY RESPONSE 25Hz 25KHz 0 10B at10dB below rated output power 3dB points 5Hz 50KHz VOLTAGE GAIN 30dB 32dB 34dB DISTORTION S
12. ngdom 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 A LTO 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 A LTO MACRO 830 1400 2400 Professional High Power Stereo Amplifier is the result of many hours of listening 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 A LTO MACRO 830 1400 2400 Professional High Power Stereo Amplifier a reality available to our customers and thank our designers and all the A LTO 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 consciou
13. pport a variety of applications without any signal loss a Wiring Configuration Either the 1 4 TRS Tip Ring Sleeve phone jack or the XLR servo connector can be wired in balanced and unbal anced modes which will be determined by the actual application status Please wire your systems as the following examples For 1 4 Phone jack EX Seu Ring Tip Ring Tip Sleeve Sleeve TS Type Unbalanced TRS Type Balanced TRS Type Unbalanced For XLR connector Pin2 Pin Linked to Pin1 manually J Pint 2 Pint 4 XLR Type Unbalanced XLR Type Balanced b In Line Connection For these applications the MACRO 830 1400 2400 Professional High Power Amplifier provides XLR connectors and 1 4 TRS phone jack to easily interface with most professional audio devices Follow the configuration examples below for your particular connection Balanced Ring Ring TIP RING SLEEVE SLEEVE RING TIP Tip 1 Ring 2 Tip Ring TIP RING SLEEVE Unbalanced 1 Centre 2 3 Screen tb TIP SLEEVE SLEEVE TIP Sleeve Sleeve nt Ring Ring 1 2 3 5 0PERATION The MACRO 830 1400 2400 Professional High Power Stereo Amplifier provides three operating modes with each unit Stereo mode Parallel Mono mode and Bridged mode you can decide each specific operating mode according to your actual application circumstance Following examples will sho
14. reo at three levels of power with excellent performance Output power can be adjusted at the user s demand and the sound quality and protecting circuit are both sophisticated The front panel presents you with 6 LEDS Power LED Protection LED Clip amp Signal LED for both channels and 2 Level Controls for both channels you can operate this unit more precise and easier The Output Connectors are Speak on jacks and the binding post terminals are used for better matching Before connecting this unit into your sound system please make sure it is powered down to prevent any electric shock 2 FEATURE LIST Sophisticated protecting circuits protect the machine from improper tampering Input matching allows collection with any preamplifier Excellent frequency echo and sound quality High fidelity and low noise Balanced XLR and 1 4 TRS Input Connectors Output Connectors are speak on jacks and the binding post terminals are used for better matching 7 Output power can be switched between stereo parallel and bridged High speed and low noise fan for releasing heat When the temperature rises the fan automatically switches to high speed it re back to normal speed at other times to reduce power consumption Indicator for the output balance as well as status indicators of SIG and CLIP When there is any signal 100mV the SIG LED lights up When there is overload the CLIP LED lights up If anything abnormal happens to the circuit
15. s the CLIP LED will be continuously on with no action from the circuits This helps the user to determine which status it is in 7 White aluminum panels with acrylic presents an artistic and trendy look Solid and durable can be mounted into a cabinet Manufactured under 1509001 certified management system 3 CONTROL ELEMENTS 3 1 The Front Panel 1 Mains Switch This switch turns on and turns off the unit by controlling both phases 2 Power LED This Power LED lights up when the unit is powered up 3 Clip LED The Clip LEDs light up when distortion reaches or exceeds 0 596 approximately which means the unit is being driven by excessively high signal source and you d better adjust the level control until these LEDs re eliminated Signal Indicator These Signal Indicators light up when the output is more than 100mV 4 Level controls for CHANNEL These level Controls are used to adjust the output signal level you d better adjust them properly to avoid any distortion 5 Protection LED This red LED indicator lights up when the thermal protection system is working no signal is output during this protec tion period and this means any overheating occurs inside the unit the critical temperature is 80 C you must take actions to avoid this overheating e g speed up the air circulation decrease the signal level If the problem is corrected the protection systems deactivate automatically this LED eliminates and normal
16. s that you are our best richness Thank you very much ALTO AUDIO TEAM TABLE OF CONTENTS 1 INTRODUCTION eorr RO OR UR HODIE E SER HER ERE EROR EA LR E FRAN NAE 2 FEATURE LIST vue ase e 3 CONTROL ELEMENTS erecto tro tione ere ER oe Decore tena 3 1 The Front Panel 3 2 The Rear Panel 4 INSTALLATION amp 4 1 Mains Connection 4 2 Rack Mounting 4 3 Audio Connection a Wiring Configuration b In Line Connection S OPERATION 5 1 Operate MACRO 830 1400 2400 in Stereo Mode 5 1 Operate MACRO 830 1400 2400 in Parallel Mono Mode 5 1 Operate MACRO 830 1400 2400 in Bridged Mode 6 CAUTION FOR APPLICATION 6 1 General Application Instruction 6 2 Caution for Speaker Connection 7 TECHNICAL SPECIFICATIONS 5 or rh nen eh 7 1 Specifications 7 2 Block Diagram S WARRANTY o arte gr op p dtu cud cn 1 INTRODUCTION Thank you very much for expressing your confidence in A LTO products by purchasing our MACRO 830 1400 2400 Professional Stereo Amplifier With the MACRO 830 1400 2400 you have acquired an extremely musical and fle xible High Power Amplifier which is based on many years of experience and findings in amplifier technology and is used through the world in the renowned studios The MACRO 830 1400 2400 is used for professional output of stage ste
17. w you the typical connections you can refer to install your MACRO 830 1400 2400 into a sound system 5 1 Operate MACRO 830 1400 2400 in Stereo Mode In this mode Channel A and Channel B operate independently as a conventional stereo amplifier The Channel A input signal will be output from the Channel A output connectors and the Channel B input signal will be output from the Channel B output connectors Input wiring tips BALANCED UNBALANCED CHANNEL B CHANNEL BRIDGED STEREO PARALLEL MONO am ChannelB 37 DEOS Hn EIE d TERREA Input wiring tips 777 BALANCED UNBALANCED FROM INPUT 25000 INPUT bas SHIELD x SHIELD xk FROM SOURCE CHANNEL B CHANNEL BRIDGED STEREO PARALLEL MONO im Channel B PIN 1 1 1 2 als 20 Channel A HESS ii TERT Birfhiri sd 5 2 Operate MACRO 830 1400 2400 in Parallel Mono Mode In this mode the Channel A input signal will be output from the output connectors of both Channels The Channel B input jack is not used the Channel A and B volumes can be adjusted independently Input wiring tips BALANCED UNBALANCED NO USING
18. y also have other statutory rights that may vary from state to state SEKAKU ELECTRON INDUSTRY H K LTD No 1 Lane 17 Sec 2 Han Shi West Road Taichung 401 TAIWAN http www altoproaudio com Tel 886 4 22313737 email alto altoproaudio com 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 O 2004 Sekaku Electron NF00967 2 2
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