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Alto OEX-400 User Manual page 9

Versatile mixer with dsp effects, l&r full range speaker cabinets
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3.15 FX RETURN
This jack is used to return the sound of an effect unit to the main mix. You can also use it as the extra auxiliary
inputs.
3.16 FX SEND
This jack is used to send out the signals from AUX bus.
3.17 PHONE
This 1/4" stereo phone jack is used to connect the stereo phone.
3.18 FOOTSWITCH
You can connect an external footswitch to turn on/off the onboard effect module. It is a 1/4 " phone jack.
3.19 MASTER SPK
The SPEAKER 1&2 phone jacks output the main signal from the internal power amplifier and are used to connect
speakers. They are internally connected in parallel and output the same signal.
Connecting one speaker
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Note : The total impedance of the connected speaker system must be between 4 and 8 ohms. This means that
you can connect one speaker system with an impedance of between 4 and 8 ohms to one SPEAKER jack, or
two speaker systems each with an impedance of between 8 and 16 ohms to each SPEAKER jack. Do not connect
anything other than speakers to these jacks.
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Connecting two speakers
4
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