User Manual - Alto Professional
Contents
1. Keep these 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 instruc tions contained within the User s Manual PREFACE Thank you for choosing amp LTO MP8 Eight Channel Microphone Instrument Pre amplifier and thanks for choosing one of the results of ALTOAUDIO TEAM job and research For our ALTO AUDIO TEAM music and sound are more than a job is 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 Netherlands2. 0 E H H 9 ee ic ane ee esee mm D 8H HHO HCHO TO DISE9AL SSVd IH SP09 8P0 THATINIVO N LNHSNI 8HO X ig De o N NISOIIN If ox T MS SSVd IH Asp WOINVHd a 4 47 jl YT qaqa TAA qe dv K gp p 909 90 E 0 D1S 9A f Li N o LNHSNICHO ac 14 NI OIIN 5 T z Y MS SSVd IH Asr o NIMOA WOINVHA LZ aaa TAA se apoz ZNI INAWNALSNI gP09 4P0 THAS T lq H apos C0 DISE 9Af SSVd IH TNI ANIT N Li LWHSNI CHO 3 any iE 9 N NIZOIN MS SSVd IH 4 47 JAMOA WOINVHA 7 aaa TAA 4 SPOC Y INI INHINQHLISNI 9 09 9 0 THAS INIVO SONVGSdWI TO DISE9AL SSVe IH INI HNIT ag
3. 6 H Pin17 CH3 C Pin9 CH6 C Pin4 CH3 H Pin22 GND 5 GND Insert Points Connection In order to use rear panel INSERT sockets you need to use Y shaped cables with one 1 4 TRS connector to be plugged into unit INSERT sockets and two TS plugs to be connected to an extemal unit Please configure cable wiring like following examples i 1 4 TRS insert Insert Leads B gt Send Send NL eve re Ring Sleeve omen p Tip Return Return PENA Sere RNG P O soe 2 Send 2 Return s i Ti C 0 0 Centre Send Sleeve Sleeve TPRNGSESE uS Conte pani 4 3 Rack Mounting The most secure mounting is on a universal rack shelf available from various rack manufactures or your music dealer The MP8 fits into one standard 19 rack unit of space Please allow at least an additional 4 depth for the connectors on the rear panel Be sure that there is enough air space around the unit for sufficient ventilation and please do not place the MP8 on high temperature devices such as power amplifiers etc to avoid overheating 5 BLOCK DIAGRAM 10 29UU0 poouv eg 8 STAA WVOSVL 104 LS CXE IIH NO 9c O ST i Vc c 2 8H2 zt H8HO O IT Oc 61 H LHO 29H92 9r H9HD ST ti DSHI 1 TI Ooi OL H THO 6 8 3
4. LWHSNI IHO pus div Pr o gt NI TON AS SSVd IH 45 49 THA HD 4119 SPOC 6 TECHNICAL SPECIFICATION INPUT Connectors Six balanced XLR Two 1 4 TRS Instrument Inputs and TWO combo on Channel One and Tw Impedance Balanced gt 50Kohm Unbalanced gt 25Kohm Max input level gt 24dBu balanced and unbalanced CMRR Typically gt 60dB at 1KHz OUTPUT Connectors Eight 1 4 TRS INSERT DIRECT OUT MULTI PIN CONNECTOR WIRING Impedance balanced 60ohm Max output level gt 21dBu balanced SYSTEM SPECIFICATIONS Bandwidth 20HZ to 20kHz 0 0 5dB Frequency Response 10Hz to 200kHz 0 3dB Signa Noise gt 128dBu weighted 22Hz to 22kHz THD 0 00796 Crosstalk lt 100dB 22Hz to 22Khz FUNCTION SWITCHES 48 Volt Phantom Power Each MP8 input channel is provided of individual 48V Phantom Power switch High pass filter Each MP8 input channel is provided of individual 80Hz high pass switch INDICATORS INPUT LEVEL 3 element LED display 20 0 CLIP Function switch LED indicator for each switch POWER SUPPLY Mains Voltages USA Canada 120VAC 60Hz U K Australia 240VAC 50Hz Europe 230VAC 50Hz General Export Model 100 120VAC 200 240VAC 50 60Hz Fuse 100 120VAC 400mA SLOW BLOW 200 240VAC 200mA SLOW BLOW Power consu
5. United Kingdom and Taiwan The core of our digital audio products is a sophisticated Software Team for the last 7 years 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 the best fruits of our continuous researches and the best prices Nothing else to add but that we would like to thank all the people that made the 8 Eight Channel Micro phone Instrument Pre amplifier and thank our designers and all the ALTO staff people who make possible the realization of products containing our idea of music and sound and are ready 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 TANTRODUCTION PEPPER 4 2Z FEATURES 4 3 CONTROL ELEMENTS 4 4 INSTALLATION AND 6 5 BLOCK DIAGRAM X m 8 6 TECHNICAL SPECIFICATION inira aaeeea aana a aea aaa Ta aaa E a aaa aA eia aaa eaaa aaa AEEA 9 EA T T 10 1 INTRODUCTION MP8 eight channels microphone instrument preamplifier has been designed and constructed using advanced technology to provide its user crystalline audio reproduction for an infinite period of time which is ideal for professional recording applications and sound installs These first 2 channels
6. User s Manual MP8 EIGHT CHANNELS MICROPHONE INSTRUMENT PREAMPLIFIER a LTO www altoproaudio com Version 1 3 Oct 2006 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 4 ON Protective Ground Terminal AC mains Alternating Current Hazardous Live Terminal 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 and should be mmm eparate 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 e External Connection Always use proper ready made insulated m
7. ains cabling power 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 e 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
8. 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 2006 SEIKAKU GROUP NF02243 1 3
9. ervice 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 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 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 No 1 Lane 17 Sec 2 Han Shi West Road Taichung 40151 Taiwan http www altoproaudio com Tel 886 4 22313737 email alto
10. mption 30 Watts Mains Connection Standard IEC receptacle PHYSICAL Dimension W 483 0 D 288 0 H 44 2 mm Net Weight 3 3Kg 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 Abrief 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 s
11. nlet Standard IEC receptacle connect your MP8 to mains with the supplied power cord Before powering up your MP8 for the first time make certain the stated power requirement of the instrument matches the voltage supplied in the country Failure to do so could result in injury to the user and the probability of irreparable damage to the unit is highly likely 9 LINE OUTPUT 1 8 This preamplified output multi pin connect is used to output channels 1 8 analog signals 19 MIC Input Each channel comes with input socket There are balanced XLR sockets from channel 3 to channel 8 and combo sockets channel 1 and channel 2 It provides ultra low noise and wide gain control allowing the MP8 user to boost desirable signal without increasing unwanted background noise Phantom power is available to each channel input of the MP8 When the phantom power switch is engaged the 48v power is supplied for condenser microphone a Insert The MP8 provides a stereo1 4 TRS socket for each channel These connectors allow to send and receive the analog signal to and from an external processing unit 4 INSTALLATION AND CONNECTION 4 1 Mains Connection Please ensure that the MP8 supply voltage matches your area voltage before plugging the power cord into the wall outlet use the same fuse as marked on the fuse holder at the AC power connection The mains connection of the MP8 is made by using the enclosed mains cord and unit standard IEC receptacle It c
12. of our MP8 include high gain mic line input with an integrated DI box feature The high quality components and the carefully designed circuits ensure excellent audio performance and an extremely linear frequency response giving crystal clear sound in the high range and an up front full bodied bottom end This peramplifier guarantees total reliability and a trouble free use even in the most demanding conditions We believe the MP8 not only look great but provide a perfect performance what you get is unprecedented performance at an incredibly attractive price 2 FEATURES e Ultra Wide Dynamic Range e Low Noise Operating Levels 48V Phantom Power on Every Channel e Instrument Input on Channels One and Two e 25 PIN SUB D Connector Analog Outputs 3 CONTROL ELEMENTS 3 1 The Front Panel W 4 AS Ae 8 CD 1 4 Instrument Input only channel 1 and channel 2 These two 1 4 instrument inputs have been designed to connect instruments such as electric guitars or basses These instrument inputs are ultra high impedance amplifiers designed to allow the audio potential of an acoustic or electric instrument pickup to be fully realized Note please do not use the pre amp of the instruments on board if possible in order to avoid distortion caused by over driving input signal 2 Input Gain Control Knob from channel 1 to channel 8 The knob can be used to adjust the gain of the input signal The gain range can be
13. ompiles to all international safety laws and rules 4 2 Audio Connection MP8 inputs are provided of balanced XLR connectors channels 1 and 2 have combo XLR amp and 1 4 TRS connectors It can be interfaced by sever always to support a variety of applications without any signal loss Since defective or poor wiring may degrade MP8 performances please use good quality screened audio cables only Please follow the following wiring schematics to interface MP8 without experiencing any noise signal loss Wiring Configuration Either the 1 4 TRS phone jack or the XLR connector can be wired in balanced and unbalanced modes which will be determined by the actual application status please wire your system as the following wiring examples For 1 4 Phone jack Ring Tip Ring Tip Sleeve Sleeve TS Type Unbalanced TRS Type Balanced TRS Type Unbalanced e For XLR connector Pin2 Pin3 Pin2 Pin3 Linked to Pin1 manually 7 Pin 4 Pin1 4 XLR Type Unbalanced XLR Type Balanced XLR Connector Wiring For Phantom Power PIN1 GND PIN 2 48v PIN 3 48v For Direct Output Multi pin Connector Wiring Direct output Pin23 CH7 C Pin18 CH4 H Pin14 CH1 C Pin10 CH7 H Pin6 CH4 C Pin1 CH1 H Pin11 GND Pin19 GND Pin2 GND Pin24 CH8 H Pin20 CH5 C 15 CH2 H Pin12 CH8 C Pin7 CH5 H Pin3 CH2 C Pin13 GND Pin8 GND Pin16 GND Pin25 GND Pin21 CH
14. varied from OdB to 60dB 3 Phantom Power Switch from channel 1 to channel 8 The unit provides 48V Phantom Power to every channel Via this lighted switch you can turn on off the 48V phantom Power for condenser microphone Note please do not connect dynamic microphone when the phantom Power is on Otherwise It may damage the device and the microphone 4 High Pass Filter Switch from channel 1 to channel 8 The unit provides an 80Hz high pass filter for each channel You will activate the filter by pressing the lighted switch This filter is useful for eliminating extraneous low end information from the signal being amplified Frequencies from eighty hertz and below are cut from the incoming signal This feature is useful in eliminating low frequency noise such as air conditioning rumble or for reducing the sound of footsteps or other types of vibrations from being transmitted through the microphone stand into the microphone But never press the switch when in music or bass musical instrument application or the plump bass of music 5 Input Level LED Indicator These three LEDs will indicate the level of the input signal When red LED flashes it warns you that input signal level is too high and may cause distortion please attenuate the level of the input signal 6 Power LED Indicator When the unit is powered on the LED lights up 7 Power Switch It switches on off MP8 main power 3 2 The Rear Panel 8 AC I
Download Pdf Manuals
Related Search