MAXIDRIVE2.3+
Contents
1. LE y POWER WH L Phyl fs POWER AC INPUT 14W Apparaten skall anslutas till 95 240V 50 60Hz jordat uttag den ansluts FUSE 95 120V T500mAL til ett natverk e 210 240V T315mAL e on ON A102 OFF 4 3 2 1 B A MAXIDRIVE2 3 2 WAY STEREO DIGITAL CROSSOVER s EI C I Pia b Rad SIGNAL L ES cg DI d ATI ee WIR e UR iF AUDIO MIXER LETHE T E i D DE i W r iss s ra 8 TECHNICAL SPECIFICATIONS INPUT section Output Section DSP Section 20 bit Internal dynamics 40 bit Sampling frequency Crossover Filters Type Bessel Butter worth or Linkwitz Riley Crossover Filters Slope 6 12 18 24 or 48dB per octave Delay Step 21 microseconds minimum Max Delay time 2621 ms inputs 291 ms outputs EQ filters Up to 40 maximum depending on the crossover slope General Performance Frequency Response 20Hz 20kHz 0 25dB gt 117dB 20Hz to 20kHz gt 100dB 20Hz to 20kHz 0 05 20Hz to 20kHz 244B 18dB 12dB 6dB CLIP relative to Clip point 20dBu Dimensions 4 0 Kg Power supply see label on the unit 9 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 A2. This function is very useful whenever even temporary changes or tampering with the settings stored in the system must be prevented For example fixed installations used by several operators discotheques clubs conference halls etc sound system rental etc How to enable protection e First of all choose the protection mode Two modes are available Total Partial all editing functions are blocked and only the parameters relative to the Inputs access to the PRESET menu is disabled can be edited Delay Gain EQ all other editing functions are blocked and access to the PRESET menu disabled LocK LocK e Then use the and keys to access the area in which the password is entered IMPORTANT The protection cannot be unlocked without the password So write it down or at least choose a word that is easily remembered The password is made up of four alphanumerical characters obtainable using the and P keys and editable with the DIAL LOCK Partial e After entering the password press ENTER Note Confirmation is only accepted if the cursor is positioned on one of the passwords four characters This allows to avoid accidental enabling without having seen the password Protection is enabled and the system takes up default status How to disable the protection If the protection is enabled when the system is in default status i e when none menu LEDs are lit
3. U U 7 2 Organization The following examples will help you well use and connect the unit a A13 B24 2 WAY STEREO LEFT gt RIGHT ACINPUT 14W Apparaten skall anslutas till 95 240V 50 60Hz jordat uttag nar den anslut ts FUSE 95 120V T500mAL till ett n tverk 210 240V T315mAL on ON A102 OFF MAXIDRIVE2 3 2 WAY STEREO DIGITAL CROSSOVER k AUDIO MIXER GA Sang RW ee re LS 5 A b A1 B2 S34 2 WAY MONO with MONO SUB 2MONO FULL RANGE OUT LEFT IN A B RIGHT ACINPUT 14W Apparaten skall anslutas till 95 240V 50 60Hz jordat uttag n r den ansluts FUSE 95 120V T500mAL till ett n tverk 210 240V T315mAL dal ON A102 DEF 3 2 1 A MAXIDRIVE2 3 2 WAY STEREO DIGITAL CROSSOVER See 3 3 ana Tad ij KE H AUDIO MIXER Bitrate c A12 B3 S4 3 WAY MONO with MONO SUB 1MONO FULL RANGE OUT LEFT El MID OUT 3 LOW RIGHT SUB 2 WAY STEREO DIGITAL CROSSOVER MAXIDRIVE2 3 AUDIO MIXER d A123 B4 4 WAY LEFT gt IN A B RIGHT L m YUU bo MAXIDRIVE2 3 2 WAY STEREO DIGITAL CROSSOVER AUDIO MIXER ANN 4 WAY MONO with B SUB 2MONO FULL RANGE OUT LEFT
4. S 1508 l TURN TITI LIL T EEFHBIIE TI TTT TTT na TO 10Hz 100Hz 1 000 Hz 10 000 Hz 100 000 H 200d8 2 10Hz 100Hz 1 000Hz 10 000Hz 100 000 Hz 10Hz 100Hz 1 000Hz 10 000Hz 100 000 b Centre Frequency Cutoff Frequency Allows to choose the centre frequency of the Peaking curve and Notch filter or the cutoff frequency of Shelv ing curves Peaking WEINI x TREE EET wg lu IO THI 0 Si NUTI N 10 LI I 10Hz 100Hz 000Hz 10 000 Hz 100 000 Hz muli ani Gd Ho AN O STE c Bandwidth Allows to choose the width in octaves of the Peaking or Notch type curve It s not used with Shelving curves Peaking IR Lake L L sig eet A 20 10H 00000 15 Sil l m d Gain Allows to control the boost or cut of the selected frequencies It s not used with the Notch Filter which has a fixed cut Peaking Low Shelving High Shelving LI LOTMA LSS Ni THIN sal LTTE 10H 1 000Hy 10 000 ERE TT TTY OIN LIZ rT N S o o N L LW 1 eee eee e N The values can be set in the following rang
5. 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 Kee
6. 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 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 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 NF01644 1 5
7. adjusting the Output Gain parameter of Edit menu Note The LIMITER on any output will change the way in which the level is displayed on the corresponding LED In fact the level shown on the ladder is no longer the absolute output level but the level of the signal at 24dB 12dB 6dB compared to the limiter threshold indicated by the orange LIMIT LED 3 2 The Rear Panel OUTPUTS 12 AC Inlet and Fuse Holder Use it to connect your MAXIDRIVE2 3 to the supplied AC cord Please check the Voltage in your country and what voltage for your MAXIDRIVE2 3 is configured before attempting to connect the unit for the main AC 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 please refer to a qualified technician If the fuse continues to blow after replacing discontinue using of this unit before being repaired 13 Power Switch The switch is used to turn the main POWER on and off Note before turning on the unit please make sure the amplifiers of the sound system are off to avoid the annoying and sometimes dangerous signal peaks 14 0UTPUTS These Outputs1 4 are balanced XLR M connectors A D conversion is executed by high quality low noise 20 bit converters 15 INPUTS INPUT A and INPUT B are compatible with balanced XLR and JACK They are audio connectors of the respective sections A D conversion is executed by high quality low noi
8. and therefore no type of editing is enabled the following appears on the display Total Protection enabled Partial Protection enabled Tr A13 B24 PT 24 2 2 2 2 26 12 Note alongside the symbol of Total or Partial protection the letter M may also appear This means that the system is protected but the PRESET in question has undergone one or more changes that have not yet been stored You can however switch the system on and off without any problems as the current settings are kept in the buffer memory Nevertheless if this is your work setup it s advisable to store it ina PRESET To unlock the protection e Access the LOCK submenu The display shows the prompt for entering the password to unlock the protection The four alphanumeric characters of the password are encrypted UNLOCK P Enter in the password using the combination of the and p keys and the DIAL then press ENTER Note in the event of an incorrect password the display prompts again encrypting all the characters again UNLOCK IMPORTANT If you can t remember the password there is an easy way for you to unlock the protection Turn the unit on and almost at the same time press PREV and 4 keys Now the protection is unlocked 5 4 4 GANGING SUBMENU Ganging Input Ganging Output Ganging This submenu allows to group together the treatment of similar inputs an
9. A Input B and SUM gt Input Delay The values can be set in the following ranges INPUT DELAY INA DELAY ECCE 0 900000 0 2621438 The measurement unit can be chosen with the function Delay Unit UTILITY menu Units submenu INPUT DELAY INPUT A INPUT B MAIN PA DELAYED 91ms 31 5m 20 C INA DELAY 0 INB DELAY 91ms 5 2 2 Output Delay Use this menu page to adjust the delay lines of outputs 1 2 3 and 4 gt Output Delay ac ee The values can be set in the following ranges gea DELAY OUTPUT DELAY unt mg La The values can be set in the following ranges OUTPUT DELAY Loudspeaker OUTPUT 1 OP1 DELAY Components HIGH 0ms 4 S d 18ms 6 5m Marica e 4 14ms 5m KR N OP3DELAY LOW 4ms 5 3 Edit Menu The values can be set in the following ranges menu EDIT Noise Gate Output Pol Output CompLim OUTPUT DELAY Delayed Virtual Delayed Virtual Alignment 1 Alignment 2 Parameters Parameters Parameters Parameters Parameters Parameters Parameters Parameters In these pages the number of the parameters and how they are presented varies according to the configuration of the PRESET and according to Ganging and Units settings UTILITY menu In fact these pages only show th
10. EREO DIGITAL CROSSOVER b Temperature Used to key in the value of the environmental temperature of place of installation The system uses this value to automatically compensate for the differentials due to the difference speed of sound Transmission according to the air temperature This allows to set the delays during the sound check and only have to reset them automatically when necessary For example during a concert in the event of big jumps in temperature etc The editing values are in the following ranges 60 C 30 C with 1 C steps 140 0 22 0 with 1 8 F steps Temlplerjatu j BEES 20 SERIES ER Note the measurement units can be chosen between C degrees Centigrade F degrees Fahrenheit by means of the Temperature Unit function UTILITY menu Units submenu c Wake Up Allows to choose the mode in which MUTE functions are restored when the MAXIDRIVE2 3 is switched on The options include Normal Mute when switched on the system restores the last when switched on the system automatically MUTE configuration before switching off sets all the outputs in MUTE d LCD Contrast Allows to adjust the Display contrast The values are in the following range 0 minimum contrast 32 maximum contrast LCD Contrast 5 4 3 LOCK SUBMENU Used to enable or disable the protection of the system against accidental or unauthorized changes
11. PREV and NEXT keys to access to the INB Gain page if there is one this will depend on the con figuration and the other utilities loaded in the memory Repeat the settings as explained above 4 3 First Setup At this point the first custom setup can be prepared The following is only the description of setup procedure The detailed specifications of each parameter are shown in the respective paragraphs of the manual e Firstly set the following parameters shown in order Output Pol Polarity of the outputs Xover Crossover frequencies separation of the speaker channels Output Delay Alignment of the speaker enclosure components Output Gain Levels of the outputs Note The regulation of the MAXIDRIVE2 3 s parameters is closely related to the characteristics of the com ponents of the sound system So if you re not the expert please refer to the documentation and technical specifications of your power amplifiers loudspeaker enclosures monitors etc This will enable you to work faster and safely e Disable the MUTE function on the outputs you intend using and listen the sound carry out instrumental checks if you have the necessary equipment and any corrections required e Then if necessary adjust the values of the following functions Output EQ Output equalizers Output Limiter Output limiters Note In this first phase of setting up your sound system the adjustment of these functions which if not Indis pensable during installati
12. User s Manual 2 WAY STEREO MAXIDRIVE2 3 DIGITAL CROSSOVER a LTO www qlloproquqio com Version 1 5 October 2005 English SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN A A 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 AC mains Alternating Current 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 and should be mmm 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
13. 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 T INTRODUC TION WE 4 FEATURES ui E e 4 JS GONTROL IV INE KE 4 3 1 The Front Panel 3 2 The Rear Panel 4 GETTING STARTED a IH HII a rr arar r ra sar r rr 6 4 1 Configuration of The System 4 2 Adjust The Input Signal 4 3 First Setup 4 4 System Configuration 4 5 Number of Presets 4 6 Type of Preset 4 7 Name of The Preset 4 8 Preset Modifications 4 9 System Protection 5 THE MENU MAP CONFIGURATION DESCRIPTION 10 5 1 Preset Menu 5 2 Delay Menu 5 3 Edit Menu 5 4 Utility Menu 6 e 1 eet LE 28 T APPLICATION WEE 28 7 1 Factory Preset Configuration 7 2 Organization 8 TECHNICAL SPECIFICATIONS 34 WARRANTY EE 35 1 INTRODUCTION Your MAXIDRIVE2 3 is a 2 Way Stereo Digital Crossover and it is a powerful versatile signal processor The apparatus will provide 2 3 or 4 way mono X over with 4 outputs Thanks to the use of selected and expensive components the performances of MAXIDRIVE2 3 are worth much more than its price you can set the input and output routing configuration only through recalling one of the Presets included in the internal m
14. cific output also changes the way in which the level is displayed on the corresponding LED ladder In fact the level shown on this ladder is no longer the absolute output level but the level of the signal at 24dB 12dB 6dB compared to the LIMITER s threshold orange LIMIT LED no matter what the threshold value is d Ratio Allows to set the compression ratio that is to say how the signal exceeding the threshold has to be reduced The editing values are the following Lim 20 0 10 0 8 0 6 0 5 0 4 0 3 5 3 0 2 5 2 0 1 7 1 5 1 3 1 1 op CompLlim op _CompLim Isitloiw 2 15 gd Slow Lim Off The Lim Value corresponds to the maximum compression ratio all the signal exceeding the threshold is cut and in this condition the processors acts as a LIMITER The other values allow to reduce the signal with a ratio from 1 20 0 high compression to 1 1 1 low compression in order to obtain different compression effects according to the kind of signal and to the kind of application 5 4 UTILITY Menu This menu comprises a series of submenus that allow to set a series of system options and access certain utilities such as the control of the protection against accidental or unauthorized changes menu Delay Unit UTILITY Lim Thresh Unit Temperature Unit Output Meters Temperature LCD Contrast Input Ganging Output Ganging 5 4 1 UNITS SUBMENU Uni
15. d or a variable number of parameters 6 Navigation Cursor Keys Each editing page comprises a variable number of parameters fields The right and left keys allow you to select the various required parameters via controlling the movement of the cursor in the page ZENTER Key The key allows you to access to the selected editing page Pressing this key you can edit and confirm the required value of parameter 8 ESC Key The key allows you to exit the selected editing page It can be also used to reject the value to return to the stored value 9 INPUT LEVEL LED Meters The LEDs are used to indicate the level of input A B In order to get an up front distortion free signal you keep the signal quite high but do assure that the red CLIP LED doesn t light up continually 10 MUTE Switches There are four mute switches 1 4 They are used to mute the signal of the respective outputs When the switch is on the corresponding LED will light up These switches can avoid signal peaks when switching on and off the sound system and isolate the individual audio sections during testing or checking sound etc The restored Mute function can be set to use the Wake Up Function Utility menu Misc Setup submenu and can be set as Normal last setting before the unit was switched off or Mute all outputs automatically forced into Mute status 11 OUTPUT LEVEL LED Meters These LEDs indicate the level of the respective outputs you can adjust the output via
16. d or outputs Similar is intended as meaning elements which have the same properties and or the same structure For example the right and left sections of a stereo system are similar as they are made up symmetrically of the same quantity and type of elements the same components for High Mid and Low frequencies The practical use of the Ganging function consists in the possibility of editing with identical values the parameters of similar elements carrying out single instead of double operations For example it s possible to set the same Delay value or equalization on both inputs with just one operation or set identical Xover parameters for the various outputs fed to a stereo sound system or yet again enable the LIMITER simultaneously on the two outputs dedicated to two mono stage monitors The system automatically recognizes incompatible elements contained in the various configurations and only enables the Ganging function where it can effectively be used Therefore the Ganging function doesn t have any effect on the MONO setups The Ganging function can be enabled separately for both groups of input and groups of outputs IMPORTANT Precisely for its characteristics the Ganging function affects the way in which the relative para meters audio are edited or represented As soon as Inputs and or Outputs are ganged the various menu pages only show the values that can actually be used This however doesn t mean that the values change
17. e parameters that can actually be used in the most suitable form of editing 5 3 1 Input Gain Input gain control Allows to adjust the amplification of the signal fed in through Inputs A and B Editing values are in the range 6dB 30dB with 0 5dB steps Note Setting the input signal of a digital unit is particularly important much more than on an analog unit as any saturation of the A D converter due to an excessively high input signal causes a typical particularly distinct noise To achieve a good signal noise ratio i e an up front distortion free signal feed a signal in on the MAXI DRIVE2 3 s input and watch the INPUT LEVEL A B LED ladders Keep the signal quite high but make certain the red CLIP LED doesn t light on continually 5 3 2 Noise Gate Allows to cut or reduce the background noise generated by the unit connected to the processor s inputs the mixer for example The filter is active when the input signal is below a certain threshold and reduce its level cutting the undesired background noises The noise gate control has 4 main parameters attack release threshold and range You can use the ENTER key to access to the noise gate sub menu then select the editing parameter that you want to perform via the PREV and NEXT keys use the DIAL to set the value for these parameters The attack can be varied from 0 5 100mS with 0 5mS step The release is in the range 0 01s 4 00s with0 1s step The thre
18. e signal level of each individual output Editing values are between 6dB 30dB with 0 5dB steps Gre Note The level of each output is shown by the respective OUTPUT LEVEL LED ladder To avoid distortion don t let the red CLIP LED light up As automatic protection you can also enable the LIMITER EDIT menu on the outputs that require it In this case remember that enabling the LIMITER changes the display mode on the relative LED ladder in fact the level shown is no longer the absolute output level but the level of the signal In relation to the LIMITER threshold 5 3 7 Output Pol Controls the output s polarity Allows to invert the phase of the signal of individual outputs Editing values are Normal leaves the phase unchanged Reverse shifts the phase through 180 inverting it OP 41 POLARITY OP1 POLARITY M The effect of this control is summed with that of the parameter of the LPF filter Xover EDIT menu which operates with 5 steps a range of between 0 180 In this way it s possible to set the phase of each individual output with 5 steps within a complete 360 revolution a very useful function when assembling arrays of speaker enclosures in the control of the interpolation between various enclosures or between sections of the same system 5 3 8 Output Limiter a Output level limiter Allows to keep the signal of each individual output within a set l
19. ed normally temporarily modified but can t be cancelled overwritten or permanently modified Factory PRESETS contain some specific settings for certain types of enclosures and all the system s usable configurations For this reason they re the ideal starting point for creating custom PRESETS User PRESETS Stored data that can be programmed by users User PRESETS are internal memory areas in which your own personal settings can be saved 5 1 1 Load PRESET This menu page allows the required PRESET to be loaded and made operatively Load Preset 11262112 11 e Use the DIAL to reach the required PRESET 6 Factory PRESETS and 64 User PRESETS Note since the system must always be configured there are no empty memory areas All the User areas unused by custom PRESETS are automatically occupied by the Default PRESET which contains a standard start configuration with all the values of the various parameters at zero Load Preset B24 16 4 0 Defauit 64 Default e Press ENTER The system returns to default status and the display shows the information on the PRESET that has just been loaded 12 02 2 Note In the example Factory PRESET 2 named 2x2W has been loaded Its system configuration is Input signal assigned to outputs 1 and 3 Input B signal assigned to outputs 2 and 4 5 1 2 Store amp Naming PRESET Use this menu to create n
20. emory 2 FEATURES e Single rack unit e 2 COMBO input connectors are compatible with balanced XLR and 1 4 JACK e 4 outputs are balanced XLR M connector e High quality A D and D A converters to develop a 117dB dynamic range e Delay lines up to 2 5s for each input and up to 300ms for each output e 6 Factory presets and 64 user presets by large memory capacity e Switching power supply e Manufactured under QS9000 VDAG6 1 certified management system 3 CONTROL ELEMENTS 3 1 The Front Panel CLIP _ CLIP PRESET LIMITI LIMIT LIMIT BEE P u p MAXIDRIVE2 3 CO eO COS OTe 2 WAY STEREO k 4 DIGITAL CROSSOVER 24 INPUT LEVEL lt gt 1 MODE Key The button allows you to select four modes PRESET DELAY EDIT and UTILITY Pressing MODE repeatedly to reach to the required menu and the corresponding LED will light up You can edit the parameters of the selected menus If none of the menu LEDs is lit the Display shows the name of the current PRESET and no parameters can be modified 2 LEDs These LEDs indicate the selecting status of the menus 3 Display Rear lit 2x16 display It shows the pages of the various menus and the relative parameters 4 DIAL Knob The knob allows you to edit value of the selected parameter The value raises while turning the DIAL clockwise and lowers counterclockwise 5 PREV NEXT Key Each menu comprises several pages These buttons allow you to turn over the pages an
21. es 5 BAND FULL PARAMETRIC EQ wwe e mo Peak Peaking 0 05 3 00 oct step 0 05 oct 15dB step 0 508 mett High Shelving 6dB oct HiSh12 High Shelving 12dB oct Notch NotchFiter 454B im 0 05 3 00 oct step 0 05 oct 5 3 4 Xover Low pass and high pass filters Made up of a combination of a low pass filter and high pass filter the crossover allows to divide the audio signal into segments that can be used by the individual section of a sound system for example High Mid amp Low Each Xover has 2 slightly different pages one for each filter where the name of the output it affects and the type of filter are shown fo SCC o P1 LPF Th rju 1 HPF Output 1 Low Pass Filter Output 1 High Pass Filter Low Pass Filter The low pass filter allows all the frequencies below a specific frequency to pass whereas it cuts all the frequencies above it High Pass Filter The high pass filter allows all the frequencies above a specific frequency to pass whereas it cuts all the frequencies below it LPF LPF HPF Signal segment obtained with the combination of LPF and HPF Each filter has the following editable parameters Type of Filter Allows to choose three different types of filter and different attenuation slopes Butterworth But at 6 12 18 or 24dB per octave Bessel Bes at 12 18 or 24dB per octave Link
22. evel Can be used effectively to protect the components of a sound system gt Output CompLim The following editable parameters are available b Reaction Times Allows to choose between 3 types of Limiter reaction speed In fact these are attack and release times that are optimised so that the Limiter reacts more or less rapidly when the signal exceeds or drops below the threshold Fast short times suited to rapid Limiter operation Normally more suited to outputs dedicated to high frequencies Normal intermediate times suited to the majority of applications Normally more suited to outputs dedicated to mid frequencies or full range systems Slow long times suited to avoiding rapid repeated level jumps pump effect Normally most suited to outputs dedicated to low frequencies LIMITER ATTACK RELEASE 1 CompLim FFlajlsit JOIfif c Threshold Allow to set the level above which the Limiter intervenes limiting the signal and below which it leaves the signal unchanged The editing values are within the following ranges 19 8dBu 10dBu with 0 2dBu steps 7 574V 0 245V with variable steps The measurement unit can be chosen with the Lim Thresh Unit function UTILITY menu Units submenu The Off value disables the LIMITER whereas any other value enables it oP1 CompLim oP1 CompLim gewi L i 5 8 IMPORTANT Enabling the LIMITER on a spe
23. ew PRESETS i e to save all the current system settings 20xdDefault To save a PRESET Use DIAL to reach the memory area in which the PRESET is to be saved Note In this procedure the Factory PRESET areas aren t available since the Factory PRESETS can not be permanently remember that it is possible to load a Factory PRESET modified Nevertheless save it in a User PRESET area modify it as required and then store it again in the same User area Note Scrolling through the memory areas the display shows the number type and name of the PRESETS contained in them 3 Default Press ENTER The PRESET Naming page appears by means of which it s possible to edit the name of the PRESET to be saved The name of the start PRESET i e of the PRESET currently loaded is proposed as default The cursor takes up position on the first of the twelve character spaces available At this point e f you decide to accept and confirm the name suggested press ENTER e If you want to abort Naming procedure for example because you ve chosen the wrong memory area and return to Store PRESET procedure press ESC e f you want to assign a new name to the PRESET you re storing use the and P keys to position the cursor on the required character use DIAL to enter the alphanumeric value wanted after finishing press ENTER 5 2 Delay Menu Use this menu to work on the systems delay lines In these pages the numbe
24. immediately On the contrary the values remain unchanged Even if not shown until new values are entered Only at that point ganged Inputs and or Outputs assume the same value with the just one operation For example even if the display shows that Input A amp B are ganged in the page with a certain parameter the value shown remains that of Input A until a new value is entered as Input B doesn t automatically assume the values of Input A To check this 1 set Input Gangin Off load the Default PRESET set INA Delay 1 and INB Delay 0 2 set Input Gangin On return to the Input Delay menu the display shows INA amp B Delay 1 a if you leave the value unchanged and once again set Input Gangin Off going back to the Input Delay menu the display shows INA Delay 1 and INB Delay 0 original values b if you change the value for example INA amp B Delay 3 and you once again set Input Gangin Off going back to the Input Delay menu the display shows INA Delay 3 and INB Delay 3 new values This condition is used to avoid accidental or temporary enabling of the Ganging function from changing the values of all the stored PRESET The rule can be summed up as follows only the values that have to be intentionally changed are changed So generally speaking to avoid contradictions oversights and confusion between what is shown and what is effectively carried out it s advisable to enable the Ganging functions before starting to edit a PRESET M
25. ll 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 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
26. mong the PRESETS available there are already some optimised for the specific speaker enclosures being used e Press ENTER The display shows the PRESET loaded in the units memory and the relative configuration le 5 4 2 Adjusting The Input Signal It is much more important to set the input signal of a digital unit than that of an analog unit because excessively high input signals will make any saturation of the A D converters cause a typical particularly distinct noise high level square wave Proceed as follows e Keep the MAXIDRIVE2 3 outputs in MUTE status LEDs light on e Feed a signal in on the MAXIDRIVE2 3 s input and watch the INPUT LEVEL A B LED ladders To obtain a good signal noise ratio i e an up front distortion free signal keep the signal quite high but make certain the red CLIP LED doesn t light up continually e Find out the output level setting for your mixer or other unit and connect it to the input of the MAXIDRIVE2 3 e Adjust the MAXIDRIVE2 3 input gain if necessary Press the MODE key until the EDIT menu LED lights up Use the PREV and NEXT keys to go to the Input Gain page e Press ENTER The display will show the INA Gain or INA amp B Gain page according to the configuration and other utilities loaded in the memory Use the DIAL to change the gain value and watch the level of the signal on the LED ladders until the ideal values are reached Then use the
27. on can wait But do remember that adjusting the equalizers can also affect the signal level So if considerable equalization changes are made remember to check and adjust the output levels too if necessary 4 4 System Configuration 362w msuB MAUX The letters indicate the inputs A Input A B Input B S SUM sum of inputs A and B Numbers 1 2 3 and 4 indicate the respective outputs In the example The signal connected to Input A is assigned to outputs 1 The signal connected to Input B is assigned to outputs 2 The Sum of the signal on inputs A and B is assigned to outputs 3 and 4 The system is therefore configured as shown in the following diagram 2W MSUB MAUX LEFT Wu LOW E _ SUB L R IN A B RIGHT _ AUX L R 4 5 Number of PRESETS 1 6 Factory PRESETS and 64 User PRESETS 4 6 Type of PRESET There are 2 categories of PRESETS F Factory PRESETS factory programmed cannot be permanently changed These include all the system s usable configurations These are the starting points for Creating User PRESETS from scratch U User PRESETS can be programmed by users 4 7 Name of the PRESET 12 42 2 In the example the name indicates two way stereo system 4 8 PRESET Modifications This indicates that the value of one or more parameters has been temporarily modified with respect to the st
28. ored inthe PRESET shown Practically speaking this indication means that the changes made to the PRESET have not been stored Note once it has been enabled the indication remains even if the original values are reset manually The indication disappears as soon as the PRESET is saved or as soon as a new PRESET is loaded includ ing this same PRESET In other words the indication disappears as soon as stored values are accessed If the PRESET isn t saved temporary changes are lost as soon as a new PRESET is loaded including this same PRESET Note temporary changes are kept on the other hand in the buffer memory when the unit is switched on the system maintains exactly the same settings as when the unit was switched off including temporary changes 4 9 System Protection These indications appear when the LOCK function UTILITY menu is enabled i e when the system is totally T or partially P protected against accidental or unauthorized changes even if temporary Protection is ensured by a password without which editing procedure can t be unlocked 5 MENU MAP CONFIGURATION DESCRIPTION The control software is organized in PRESET DELAY EDIT and UTILITY menus each of which contains the relative types of parameters and functions 5 1 Preset Menu menu PRESET Load Preset Store Preset There are 2 distinct categories of PRESETS Factory PRESETS Factory programmed storage Factory PRESETS can be us
29. oreover it s best to make certain to effectively set the required value manually confirming all the parameters required Note The elements in Ganging assume the new value as soon as the DIAL changes the status of the old value So if the value which has to be allocated to the elements in Ganging is the same as the old value it s necessary to use the DIAL temporarily change the value even only by one step and then go back to the old value a Input Ganging Allows to enable disable Ganging function on the inputs The settings are Disabled Enabled b Output Ganging Used to enable disable Ganging function on the outputs The settings are Disabled Enabled na 6 CONNECTIONS The following diagrams show the schemes of the recommended cables and some connection examples referred to various system configurations Inputs A amp B GROUND HOT BALANCED XLR M Inputs A amp B GROUND HOT BALANCED JACK Outputs 1 4 HOT J BALANCED XLR F COLD 7 APPLICATION The following diagrams show the MAXIDRIVE2 3 s various system configurations as if to say the various input and output hardware combinations 7 1 Factory Preset Configuration Configuration Configuration DEFAULT A13 B24 Default preset routing 2 WAY STEREO 2X2W A13 B24 2 WAY STEREO foo aw ewwwowosmssUSrzMONGFALRANEEQUT
30. p 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 Dear Customer Thanks for choosing MAXIDRIVE2 3 2 Way Stereo Digital Crossover 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 Netherland
31. r of the parameters and how they are presented varies according to the configuration of the PRESET and according to Ganging and Units settings UTILITY menu In fact these pages only show the parameters that can actually be used in the most suitable form of editing The practical differences between Delay Input and Delay Output A Delay is only a processor by means of which a signal is deliberately delayed by a programmable length of time From a technical point of view the Delays applied to the inputs and outputs are equivalent Nevertheless their application is different OUTPUT DELAY INPUT DELAY Input Delay delays the signal of an input or the sum of the inputs before sending it to the routing system In this way all the outputs which depend on that input are delayed by the same length of time Also called Master Delay input Delay is mainly used to compensate for the effects dues to the distance between the various speaker enclosures or between various blocks of a complex sound system for example in large concert halls stadiums etc Thus achieving virtual alignment Output Delay only delays the signal of a specific output Also called Channel Delay output delay is mainly used to compensate for the distance between different blocks of the same sound system for example clusters or to correct internal alignment of a speaker enclosure components 5 2 1 Input Delay Use this menu page to adjust the delay lines of Input
32. s 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 would 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 the best fruits of our continuous researches and the best prices Our MAXIDRIVE2 3 2 Way Stereo Digital Crossover is the result of many hours of listening and tests involving common people area experts musicians and technicians The results of this effort is a DSP hi performance equalizer that can be used in applications as musical performances Installation and sound reinforcement Besides we offer to you a number of factory EQ curves that we collected and transformed in presets now available in our small efficient and easy to use MAXIDRIVE2 3 Nothing else to add but that we would like to thank all the people that made the MAXIDRIVE2 3 a reality available to our customers 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
33. s lt Delay Unit Lim Thresh Unit Temperature Unit Used this submenu to choose the measurement units to be used with certain functions a Delay Unit Used to set the measurement units in which Delays are expressed DELAY menu The options include m meters mm millimeters ms milliseconds us microseconds Measurement units for Input Delay Measurement units for Output Delay Delay Unit Delay Uni mei gold I b Lim Thresh Unit Used to set the measurement units for the threshold of the Limiter EDIT menu Output Limiter The options include dBu decibel 0 dBu 0 775 V rms V volt Lim Thresh Unit Lim Thresh Unit BERR c Temperature Unit Used to set the measurement units for the Temperature function UTILITY menu Misc Setup submenu The options include C degrees Centigrade F degrees Fahrenheit TemPerature Unit BERR 5 4 2 Misc Setup Submenu Output Meters Meters Temperature LCDContrast Contrast Use this submenu to set a series of system options gt Misc Setup pa EEEN Q a Output Meters Used to decide whether to display the outputs signal before or after MUTE The options include PreMute PostMute the signal is always shown the signal is only shown if no matter what the MUTE status the output isn t in MUTE Output Meters Output Meters M MN MAXIDRIVE2 3 2 WAY ST
34. se 20 bit converters 4 GETTING STARTED The powerful versatile signal processor MAXIDRIVE2 3 is mainly designed for use with audio systems Its routing configurations of the input and output can be only set by recalling one of the PRESETS included in the internal memory So the user must be very clear about the main function of the unit in order to get a best operation of your MAXIDRIVE2 3 Before you start your operation please read the following parts carefully 4 1 Configuration of The System At first switch off the equipment carry out the audio and power connection from the various components of your sound system Then connect the main cord and only switch on the MAXIDRIVE2 3 The display will show the data regarding with the operating system release for a few seconds MAXIDR IVE 2 3 Meanwhile the system will restore the exact operating conditions at the time of switching off And the system Will enter into default status showing the main operating information on the display _ 2 2 2 1111 e Set all the MAXIDRIVE2 3 outputs in MUTE status LEDs lit by pressing the relative keys e Load the Factory PRESET containing the configuration you ve found e Press the MODE Key until the PRESET menu LED lights up The display will show the Load PRESET page example Wed IV i su s5 4w BsUB e Use the DIAL to find the necessary Factory PRESET indicated by the letter F Check that if a
35. shold is in the range 80 0dB 8dB with 0 5dB step The range is in the 80dB OdB with 0 5dB step gt INA amp B GATE off ATI 0mS RL0 50S 5 3 3 Input EQ Input equalizer with 5 parametric filters Allows to alter the overall tone of the signal connected to the respective input Also called Master EQ the equalization of the input signal effects all the outputs connected to the input and the input SUM This component s characteristic quality and programmability identical to the output Equalizer enable it to be Used so effectively and flexibly as to make the use of graphic equalizers often unnecessary gt EQ were Ets ADC E DELAY PLT TTT TTT Eee ey yy lt gt Each equalizer has 5 pages one for each filter showing the name of the input it affects and the number of the filter The following editable parameters are available for each filter a Type of Filter Allows to choose among Peaking Low or High Shelving with a slope of 6 or 12 dB per octave and Notch filter Peaking Low Shelving High Shelving Notch LN I n T IU IR TI THI IO UI TU s S A TT 15 TUN LY d VU II ii h E a K 100 15 ca II TATTICI AMT CM TTT 25 UU OcB 5 DN gout q S CTT Il Ul E
36. witz Riley LR a 12 24 or 48dB per octave By setting the Thru value the filter is disabled and the signal passes without its frequency being altered o1 24 ER ON Crossover Frequency Allows to choose the filter cutoff frequency OP 4 Trinriu_ EE Phase Allows fine control in 5 steps of the signal s phase The effect of this control is summed with that of the Output Polarity function 0 180 In this way it s possible to adjust the phase of each individual output with 5 steps through a full 360 Note this control is only in the Low Pass Filter window o P1 The values can be set in the following ranges Linkwitz Riley 12 24 48 dB oct Thru Butterworth 6 12 18 24 dB oct Linkwitz Riley 12 24 48 dB oct 5 3 5 Output EQ Output equalizer with 5 parametric filters Also called Channel EQ allows to alter the tone of each individual output The characteristics of quality and programmability are identical to those of the Input Equalizer and enable this unit to be used extremely effectively and flexibly oP1 EQ 2 klo o 11 lo 1 5 Example Output 1 Filter 1 Since technical specifications and editing fields of the Output EQ are identical to those of the Input EQ please refer to INPUT EQ section for descriptions 5 3 6 Output Gain Output level control Allows to adjust th
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