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Alto OEX600 User Manual page 10

Versatile mixer with dsp effects, l&r full range speaker cabinets and sub-woofer

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(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 when pushing ON
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 two1/4"TRS jacks for stereo input. Connecting the left input jack only, the input will
operate in mono mode.
(4). -20dB PAD
Pressing this button the input signal will be attenuated by 20dB. In such way you'll obtain increased headroom
simultaneously reducing the risk of distortion due to input level peaks with too high input signals.
(5). Equalizer
Each channel is equipped with 3-band warm, natural EQ: HI, MID and LOW bands, which allows 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 or human
voice high 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 provide you an interesting panorama of sound effects. The gain range can be varied
from -12dB to +12dB 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 what
it 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 controls are adjust-
able in -
to +15dB range.
The AUX1 control is configured PRE-FADER, it means that the signal is independent by channel fader setting.
It is suited to be used as monitor mix in a live sound mixing, or for 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.
This signal is assigned to onboard DSP (digital effects module). Via the AUX2 OUT jack, the AUX2 signal can also
be assigned to an external effect device.
(7). PAN/BAL Control
It controls the channel signal position between left and right in the stereo bus. Of course you can use it also to
"move" the channel signal in stereo front to create spatial effects.
(8). LEVEL Control
This pot provides smooth level changes control.
(9). AUX2 TO AUX1 Control
This control adjusts the amount of the signal from AUX REUTRN2 to AUX SEND1 in a range from -
(10). AUX RTN1 Control
This control adjusts the amount of AUX RETURN1 signal to master in -
to +15dB range.
9
to +15dB.

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