Alto OEX900 User Manual Download Page 10

9

(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). 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. 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 mixing, 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). Via AUX2 OUT
connector the AUX2 signal can be sent to an external effect device.

(7). 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.

(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 by 15dB at a preset
bandwidth.

frequency "contour" of sound, to adapt it to your musical taste and

They are used to modify the

ambient characteristics. When all faders are at the center position, the equalizer has flat response.

Summary of Contents for OEX900

Page 1: ...OEX900 User s Manual LTO R www altoproaudio com Version 1 3 October 2005 English...

Page 2: ...ct away from naked flames Read these instructions Follow all instructions Keep these instructions Do not discard Heed all warnings Only use attachments accessories specified by the manufacturer Do not...

Page 3: ...2 TABLE OF CONTENTS 1 INTRODUCTION 3 4 CONTROL ELEMENTS 8 6 OEX900 WIRING GUIDE 13 5 PRESET LIST 12 7 TECHNICAL SPECIFICATIONS 14 8 WARRANTY 16 3 QUICK START 5 2 FEATURES 3...

Page 4: ...900 panel there s compact extractable 8 channel mixer which uses 24 bit A D D A converters and 24 bit DSP effects with accurate algorithms 256 presets It also provides 6 MIC inputs with ultra low nois...

Page 5: ...4 In following picture you see OEX900 most important components High quality L R full range speaker cabinets Powerful sub woofer Versatile multi channel mixer...

Page 6: ...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 appl...

Page 7: ...ixer input connectors XLRor1 4 TRS jacks as shown in Fig 8 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 speak...

Page 8: ...them back in their places all accessories into assigned storage compartment Finally lay the speakers face down on 7 Stand Stand Stereo program source Such as CD player MD Player or other Line sources...

Page 9: ...0dB 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB RIGHT LEFT MIC IN bal MIC IN bal MIC IN bal MIC IN bal MIC IN bal MIC IN bal MIC IN bal LEVEL LEVEL LEVEL LEVEL LEVEL LEVEL 0 9 9 15 15 0 9 9 15 15 L O W N O I S E P...

Page 10: ...u 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 syst...

Page 11: ...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...

Page 12: ...R Switch It switches on off the OEX900 main power 30 Powered Output Connectors These 4 way speakon type connectors are used to output the powered signal to L R speaker cabinets Note in order to avoid...

Page 13: ...a record head and multiple playback heads at intervals along the tape 1 3 5 4s 0 84ms SPRING REVERB Simulate the analog transducers springs lightly stretched sound MONO DELAY STEREO DELAY FLANGER CHOR...

Page 14: ...ND PIN5 SUB OUT PIN6 L OUT HI PIN7 R OUT HI PIN8 C GND Input Output Connector Description TRS Type Balanced Tip Ring Sleeve TRS Type Unbalanced Tip Ring Sleeve TS Type Unbalanced Sleeve Tip 1 4 jack X...

Page 15: ...All other inputs Tape out All other outputs Hi shelving Mid bell Low shelving 10kOhm or greater 1kOhm 120Ohm 15dB 12kHz 15dB 2 5kHz 15dB 80Hz Equalization DSP Section A D and D A converters DSP resolu...

Page 16: ...nce Low Mid High Low 4ohm Mid High 8ohm Crossover Frequencies Active 125Hz at 12dB Oct Passive 3000Hz at 12dB Oct with Electronic Dynamic Protections Amplifier Protections Low Mid High Soft Start Shor...

Page 17: ...od LTO of 1 year from the purchase date if you have completed the Warranty Registration Card in time c During the warranty service may repair or replace this product at its own option at no charge to...

Page 18: ...3737 email alto altoproaudio com Fax 886 4 22346757 c All rights reserved to ALTO All features and content might be changed without prior notice Any photocopy translation or reproduction of part of th...

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