User Manual
Contents
1. i 14 uisi gae 16 1 INTRODUCTION Congratulations Now you are the owner of the OEX900 The OEX900 is a plastic reinforced trolley that includes a versatile mixer with DSP effects L amp R full range speaker cabinets and sub woofer and some essential accessories such as power cord signal cables speaker cables and speaker stands The OEX900 adopts an optimal crossover network and advanced power amplifier technologies which ensures its incredible versatility and excellent audio performances The L amp R speaker cabinets are tightly hooked on the trolley When you operate the OEX900 take care of the setting of the L amp R cabinets first It is the development of ALTO s experience and knowledge of speaker technology in order to create a system which can faithfully reproduce sound for each kind of applications The sub woofer is built in trolley It contains a 15 low speaker which delivers a natural and powerful sound and that will bring you unprecedented low frequency emission Inlaid in OEX900 panel there s compact extractable 8 channel mixer which uses 24 bit A D amp D A converters and 24 bit DSP effects with accurate algorithms 256 presets It also provides 6 MIC inputs with ultra low noise microphone pre amplifiers and 48V PHANTOM power at as well as warm natural 3 band EQ AUX send return and 2TK in out and so on In a word it is ideally suited fo2. The OEX900 is provided with two stereo channels 4 20dB PAD Pressing this button the input signal will be attenuated by 20dB In such way you ll obtain increased headroom and you ll reduce the risk of distortion due to input level peaks with too high input signal 5 Equalizer Each channel is equipped with 3 band warm natural EQ HI MID and LOW bands will allows you to shape the sound of program material in a very efficient way HI Treble control You can use it to get rid of high frequency noises or to boost the sound of cymbals and human voice higher harmonics The gain range can be varied from 15dB to 15dB with a center frequency of 12kHz MID Midrange control It can affect most fundamental frequencies of all musical instruments and human voice A careful use of this control will give you a very wide panorama of sound effects The gain range can be varied from 15dB to 15dB with a center frequency of 2 5kHz LOW Bass control It can boost male voice or kick drum and bass guitar Your system will seem much bigger than it really is The gain range can be varied from 15dB to 15dB with a center frequency of 80Hz 6 AUX Sends Both these controls are used to adjust the level of signal sent to AUX buses These sends contrals are adjus table in to 15dB The MON AUX1 control is configured PRE FADER it means that its signal is independent by channel fader setting It is suited to be used as monitor mix in a live sound mixi
3. 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 Keep these instructions Do not discard Heed all warnings On
4. select the effect you wish to perform There are 16 options available several kinds of reverb mono and stereo delay modulation effects and versatile two effect combinations 14 VARIATIONS Control This control provides 16 variations for each preset each variation has been designed modifying several parameters For further details please refer to chapter 5 15 PEAK LED This LED is lit when the DSP input signal is too strong This LED is lit when the DSP is muted too 16 DSP MUTE Switch This switch serves to activate deactivate the built in effect section For your convenience you can also use the FOOT SW for this operation 17 FOOT SW Jack This 1 4 phone jack can be used to connect an external foot switch to turn on off the built in effect module 18 AUX DFX RET This pot adjusts the internal external effect from 0 to 10 19 AUX2 OUT This 1 4 phone jack outputs AUX2 bus line signal 20 STEREO RTN This1 4 phone jack is used to return the signal of external unit to the main mix You can also use it as an extra auxiliary input 21 TAPE IN OUT These connectors are useful to connect the output input of a DAT cassette or taper recorder 22 TAPE TO Switch Pushing this switch to left TAPE IN signal will be routed to CH7 8 path so the signal will be controlled by channel level control and main level control Pushing this switch to right the TAPE IN signal will be derectly routed to main mix b
5. REO DELAY FLANGER CHORUS REV DELAY REV FLANGER REV CHORUS a KIKIKI 1 5 E 5 160 400 1K 2 5K 63K 16K AUXIDFX RET MAIN Tape ro PHANTOM E 48V CN MONG PE O PAD AUX2 OUT R R lt At KA 2TK LEFT LzFT O MONITOR OUT RIGHT 6 MAIN OUT HEADPHONE MIC IN bal MIC IN bal TAPE OUT CH1 CH 5 6 JL CHT 8 Low NOISE LOW NOISg gt 23 21 22 4 7 5 26 900 10 1 9 12 1 MIC IN These electronically balanced XLR sockets have been designed to accept microphone signals providing low noise microphone pre amplifier as well as phantom power for condenser microphone by pressing the PHANTOM power switch Note You shall never connect an unbalanced microphone to the XLR socket if you don t want to damage both the microphone and mixer 2 LINE IN These balanced 1 4 TRS jacks have been designed to accept line level inputs such as keyboards outputs CD players MD tape outputs etc 3 s Stereo Input This channel is equipped with two 1 4 TRS jacks for stereo input Connecting the left input jack only the input will operate in mono mode Furthermore it also provides the XLR connector for MIC input
6. User s Manual OEX900 www altoproaudio com Version 1 3 October 2005 English SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DONOTOPEN 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 AC mains Alternating Current Protective Ground Terminal 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 e Power Supply Ensure that the mains source voltage AC outlet matches the voltage rating of the product Failure to do so could result in damage to the product and possibly the user Unplug the product before electrical storms occur and when unused for long periods of time to reduce the risk of electric shock or fire External Connection Always use proper ready made insulated mains cabling power cord Failure to do so could result in shock
7. 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 e 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 f 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 NF02057 1 3
8. h as CD player MD Player or other Line sources Fig 9 4 CONTROL ELEMENTS 9 6 7 4 2 1 HIGH HIGH HIGH HIGH at lt ak 2 E 9 a m p Qu 0dB 0dB es MID MID MID MID Q Ed Ed K de 2 5KHz 2 5KHz 2 5KHz e 2 5KHz 15dB 15dB 15dB 15dB 15dB 15dB 15dB 15dB p TS p p ore gt 89 gt gt 8 2 M 2 2 E ie 2 3 5 3 MON MON MON MON me 10dB 10dB 10dB 10dB DSP FX DSP FX e Post Post 10dB PAN O e i LINE IN LINE IN LINE IN LINE IN bal bal bal bal MIC IN bal MIC IN bal MIC IN bal MIC IN bal HIGH HIGH Cy lt 12K 4 amp 13 5 MID m U LR lt gt e lt gt OPERATING E EL 0 15dB 15dB 15dB 15dB 10 lt Lo gt amp ft 1588 TE LEVEL 400 1K 25K 63K 16K mE A DFXMUTE PEAK MONITOR 10dB 10dB DSP FX DSP FX I Post m KIKIKI Ilililil Ilililil SERERE EN VOCAL 1 VOCAL 2 LARGE HALL SMALL HALL LARGE ROOM SMALL ROOM PLATE TAPE REVERB SPRING REVERB MONO DELAY STE
9. ly 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 TABLE OF CONTENTS T INTRODUC TION 3 2 FEATURES m MM sasam 3 ee STAR T ci 5 CONTROL ELEMENTS uuu DR Med 8 OO S u S S n 12 6 OEX900 WIRING GUIDE SED QU NA DIU UL iN xN CONS 13 TECHNICAL SPEGIFICATIDNG uuu l l III NEER NE
10. ncy response 10Hz to 55kHz 3dB Impedances Equalization DSP Section Type of effects Mono amp Stereo DELAY max DELAY TIME 650ms Presets Controls Main Mix Section Noise Bus noise Fader 0 dB channels muted 85dBr ref 4dBu UNITY gain 81dBr ref 4dBu Max output 27dBu balanced 22dBu unbalanced 1 4 jacks AUX Sends max out 22dBu Speaker Section Crossover Frequencies Active 125Hz at 12dB Oct Passive 3000Hz at 12dB Oct with Electronic Dynamic Protections Amplifier Protections Soft Start Short Circuit DC output voltage Low Mid High hermal Protection Subsonic Filter at 30Hz 24dB Oct Limiter Compressor 15 385mm 2 5 Voice Coil 2 x 6 5 165mm 1 5 Voice Coil 1 Compression Driver 1 Voice Coil Physical Dimension W D H 1060 700 700mm Net Weight 43 04kg Gross Weight 60 04kg 8 WARRANTY 7 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 7 2 RETURN NOTICE a In case of return for any wa
11. ng or for a headphone mix in recording application The AUX2 control is configured as POST FADER it means that the audio signal will be affected by channel fader settings This signal is assigned to onboard DSP digital effects module AUX2 OUT connector the AUX2 signal can be sent to an external effect device PAN BAL Control The pot controls the channel s position between left and right in the stereo bus Of course you can use it to move the channel signal in stereo front to create spatial effects as well as 7 8 LEVEL Control This pot provides smooth control over levels 9 OPERATING LED Display The LED indicates when OEX900 power is switched ON 10 Graphic EQ OEX900 is provided with two graphic EQs one for MAIN MIX the other for MONITOR MIX These graphic EQ have 7 band fader controls Via these faders you can boost or attenuate the selected frequency 15dB at a preset bandwidth They are used to modify the frequency contour of sound to adapt it to your musical taste and ambient characteristics When all faders are at the center position the equalizer has flat response 9 11 MONITOR LEVEL Control This control adjusts the level of monitor output by a range of co to 10dB 12 MAIN LEVEL Control By rotating this pot you ll simultaneously adjust the overall volume of the left and right main mix outputs in co to 10dB 13 PRESETS Control DSP Section Adjust this knob to
12. r live sound applications small venues applications recording and other musical purposes In order to get the best from your OEX900 we recommend you to thoroughly read this owner s manual before installation and operation 2 FEATURES Trolley appearance 2 two way satellites 1 subwoofer 1 8 channel mixer super combination Three way full range speaker system with 15 subwoofer e 6 XLR MIC input with ultra low noise microphone pre amplifiers and 48VPHANTOM power 2 stereo LINE input Warm natural 3 band EQ for each channel Precision level control 24 bit DSP effects with powerful algorithms 16 presets with16 variations each Extremely high headroom offering excellent dynamic range Plastic reinforced cabinet polypropylene High power output with 150W 2 L amp R speaker 150W 2 subwoofer Two 7 m speaker cables Two F8 folding speaker stands Compartment for storing F8 folding stands speaker cables signal cable and power cord etc Accessory List Folding speaker stands 2XF8 Power cord 1 X IEC power cord Signal cable 1X 2m Customized Speaker Cable 2 7m In following picture you see OEX900 most important components High quality L amp R full range speaker cabinets Powerful sub woofer Versatile multi channel mixer 40 Tm a s T p 3 QUICK START Though the OEX900 looks like a super formidable giant you don t have to worry about how
13. red off and in order to avoid damaging your speakers and or to produce noise the mixer main volume control should be competently turned off Connect one side of the speaker cable to the left right power outputs speakon connectors of system and the other side to the left right speaker cabinets speakon connectors as shown in Fig 6 Warning Do not connect additional speakers to the powered output The supplied system speakers provide a perfect load for the built in amplifier Fig 6 Make sure that the mixer has been connected to the system by using the appropriate connector and the customized cable as shown in Fig 7 Fig 7 Connect Microphone CD Tape or MD player Line sources etc to the appropriate MIC LINE mixer input connectors XLRor1 4 TRS jacks as shown in Fig 8 Fig 8 Now you can turn on the power switch e Turn up the volume control use the PFL function to get the proper input level for each mixer channel then adjust the main mix level control to manage the output level e end of your session put all your levels to zero turn off your system then collect all the cables and put them back in their places all accessories into assigned storage compartment Finally lay the speakers face down on top of trolley and secure the six latches Now the OEX900 is ready to be carried everywhere OEX900 P L 1 ilH Stereo program source Suc
14. rranty 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 b 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 c A brief description of the defect will be appreciated d Please prepay all the costs involved in the return shipping handling and insurance 3 TERMS AND CONDITIONS a 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 b 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 c 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 d 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
15. s cylinder Rev decay time 1 5 2 9s OEX900 WIRING GUIDE Defective wiring may degrade the performance of OEX900 product so please use good quality screened audio cable Please follow the descriptions below to connect the OEX900 with external equipment without experiencing any noise or signal loss Input Output Connector MIC IN 1 4 jack TRS 4 way speaker connector LINE IN AUX SEND Mixer Section tetas TAPE OUT MIX OUT HEADPHONE POWER CONNECTOR Speaker SPEAKER IN Section POWERED OUTPUT Main Output Section 4 way speaker connector 1 4 jack Ring l Tip Sleeve TRS Type Balanced F gt Ring Tip Sleeve TRS Type Unbalanced PIN1 Screen Ground PIN2 Hot Signal PIN3 Cold Signal TIP Hot RING Cold SLEEVE Screen TIP Hot SLEEVE Screen TIP Hot SLEEVE Screen TIP Hot SLEEVE Screen TIP Hot RING Cold SLEEVE Screen TIP Hot RING Cold SLEEVE Screen PIN1 AC IN 18V PIN2 PGND PIN3 AC IN 18V PIN4 OUT GND PIN5 SUB OUT PIN6 L OUT HI PIN7 R OUT HI PIN8 C GND e XLR connector Pin3 Ene Pin1 J 14 1 242 XLR Type Balanced Pin2 Pin3 Linked to Pin1 manually Pin1 4 XLR Type Unbalanced 1 1 2 2 7 TECHNICAL SPECIFICATIONS e Mixer Section Mono input channels Microphone Input Electronically balanced discrete input configuration Freque
16. to carry it As the OEX900 is equiped with two wheels you can think of it as a trolley Seeing is believing Operating this unit you will find that it is really versatile and user friendly Following steps will give you a guide line to set up your OEX900 Note Make all initial connections with the system powered off and in order to avoid damaging your speakers and excessive noise with main mix volume control of the mixer completely turned down e First of all extract the F8 folding speaker stands from their compartment as shown in Fig 1 Then as shown in Fig 2 unhook the L amp R speaker cabinets from the trolley in the right direction unsuitable operation may damage your equipment In order to prevent equipment damage please place the speaker stands on a solid even surface Fig 1 Fig 2 e Fix the L amp R speaker cabinets on stands as shown in Fig 3 Note In order to avoid feedback please position the speakers facing the audience and far away from the microphone Fig 3 Fig 4 Then position the sub woofer trolley Please be careful about this step as shown in above Fig 4 proper position will allow the sub woofer to develop his full power and sound character Depending on application requirements you can disassemble or not the mixer from the trolley For this application 2m signal cable is available as shown in following Fig 5 After that set up the system Note During this step too the system must be powe
17. us and its signal will be affected by main level control only 23 2TK IN Control This pot adjusts the level of 2TK IN signal in o to MAX range 24 MAIN OUT These connectors output left and right main mix You can use these connectors to output the main mix signal to external PA system or active speakers 25 MONITOR OUT This1 4 phone jack outputs the signal from MON AUX1 bus to the input of external monitor amplifier or active monitor speaker 26 HEADPHONE OUT This1 4 stereo phone jack can be used to connect stereo headphones 27 PHANTOM Switch Via this switch you can turn on off the 48V phantom power for all microphone pre amps 28 29 30 AC INLET with FUSE HOLDER Standard IEC receptacle connect your OEX900 to mains with the supplied power cord POWER Switch It switches on off the OEX900 main power Powered Output Connectors These 4 way speakon type connectors are used to output the powered signal to L amp R speaker cabinets Note in order to avoid damaging your built in amplifier please pay attention to speaker impedance Lower load impedance is not permitted SERIAL No RIGHT OUT 29 28 30 5 PRESET LIST Controllable parameter NO Preset Description 1 VOCAL 1 Simulate a room with small delay time Decay time 0 8 1 1s Pre delay O 79ms 2 VOCAL 2 Simulate a small space with slight decay time Decay time 0 8 2 5s Pre delay 0 79ms 3 LARGE HALL Simulate a large aco
18. ustic space of the sound Decay time 3 6 5 4s Pre delay 23 55ms 4 SMALL HALL Simulate a small acoustic space of the sound Decay time 1 0 2 9s Pre delay 20 45ms 5 LARGE ROOM Simulate a studio room with many early reflections Decay time 2 9 4 58 Pre delay 23 55ms SMALL ROOM Simulate a bright studio room Decay time 0 7 2 1s Pre delay 20 45ms T PLATE Simulate the transducers sound like classic bright Decay time 0 6 6 1s vocal plate Pre delay 10ms TAPE REVERB Simulate a record head and multiple playback heads Decay time 1 3 5 45 at intervals along the tape Pre delay 0 84ms SPRING REVERB Simulate the analog transducers springs lightly Decay time 1 3 5 45 stretched sound Pre delay 0 35ms 10 MONO DELAY Reproduce the sound input on the outputafter a Period 60 650ms lapse of time 11 STEREO DELAY the input sound on the stereo output with Period 210 400ms different time Feedback 12 FLANGER Simulate to play with another person carryingout Rate 0 16 2 9Hz sam e the notes on the same instrument 13 CHORUS Recreate the illusion of more than one instrument Rate 0 5 5Hz from a single instrument sound 14 REV DELAY Delay with room effect Delay period 211 375ms Rev decay time 1 0 2 9s 15 REV t FLANGER Stereo chorus and large room reverb Flanger Rate 0 16 2 52 12 Rev decay time 15 2 9s 16 REV tCHORUS Simulate the sound effect achieved by rotating horn Chorus rate 0 5 4 74Hz speakers and a bas
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