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Front Panel - Adastra A121 User Manual

1u mixer-amps & slave amps

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Introduction:
Thank you for choosing this Adastra 1U amplifier This product has been designed to offer reliable, high quality amplification for
various installation and PA applications. In order to gain the best results from this equipment and avoid damage through misuse,
please read and follow these instructions and retain for future reference.
Warning:
To prevent the risk of fire or electric shock, do not expose any of the components to rain or moisture.
If liquids are spilled on the surface, stop using immediately, allow unit to dry out and have checked by qualified personnel before
further use.
Avoid impact, extreme pressure or heavy vibration to the unit.
There are no user serviceable parts inside the amplifier – refer all servicing to qualified service personnel.
Safety
Check that the mains lead is in good condition and that the supply voltage selector switch matches the supply voltage.
Ensure signal leads and speaker cable(s) are in good condition
Do not use the USB connector as a general purpose power source or charger.
Do not allow any foreign particles or liquids to enter the amplifier through the cooling vents
Do not cover or obstruct cooling vents or fan grilles.
Placement
Keep out of direct sunlight and away from heat sources.
Keep away from damp or dusty environments.
When rack-mounting, secure firmly in place and avoid positioning heavy items directly on top of the unit
Ensure adequate access to controls and connections and pay attention to cooling air-flow
Cleaning
Use a soft cloth with a neutral detergent to clean the housing as required
Use a soft brush to clear debris from the cooling vents and connectors
Do not use strong solvents for cleaning the unit.
1.
Combo MIC1 input – Balanced XLR/6.3mm mic. input - channel
2.
MIC1 – Volume control for MIC channel 1
3.
MIC2 – Volume control for MIC channel 2
4.
LOW – Bass EQ control for MIC channels
5.
HIGH – Treble EQ control for MIC channels
6.
VOX – Auto voice-over control for MIC channels
7.
Cooling vents
8.
LINE1 – Volume control for Line input 1
9.
LINE2 – Volume control for Line input 2
10. USB/FM/AUX – Volume control for USB/FM/AUX channel

Front Panel

11. LOW – Bass EQ control for LINE and USB/FM/AUX channels
12. High – Treble EQ control for LINE and USB/FM/AUX channels
13. MASTER – Main output volume control
14. USB input for storage device
15. LED power, level and limit indicators
16. USB/FM display
17. USB/FM transport and mode controls
18. 3.5mm stereo jack for AUX input (channel 3)
19. POWER – Mains On/Off switch

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This manual is also suitable for:

A251S121S251