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953.402UK User Manual 

Introduction 

 

Thank you for choosing the Adastra A2 rackmount stereo amplifier to power your public address system. This amplifier 
is designed to offer high quality, dependable service for mobile and installed systems. Please read this manual fully and 

follow the instructions to achieve the best results with your new purchase and to avoid damage through misuse. 

 

SAFETY SYMBOL AND MESSAGE CONVENTIONS 

 

 

CAUTION 

RISK OF ELECTRIC SHOCK 

DO NOT OPEN 

AVIS 

RISQUE DE CHOC ELECTRIQUE NE PAS 

OUVRIR 

 

 

 

 

 

 

This symbol indicates that dangerous voltage constituting a risk of electric shock is 

present within this unit

 

 

 

 

This symbol indicates that there are important operating and maintenance instructions in 

the literature accompanying this unit.

 

 

 

SAFETY NOTICE 

 

1.

 

Prior to use, read through this manual

 

2.

 

Keep the manual in good condition 

3.

 

Pay attention to safety warnings 

4.

 

Observe all operating requirements 

5.

 

Do not use the device near water or wet areas 

6.

 

For cleaning, only use a lint-free, dry cloth 

7.

 

Install according to the specifications 

8.

 

Place away from heat sources or heating appliances 

9.

 

Use mains lead provided and avoid damage to cable or connectors 

10.

 

Unplug power from mains during stormy weather or if unused for long periods 

11.

 

In case of malfunction, water ingress or other damage, consult qualified service personnel 

12.

 

Do not place in damp areas or near liquids or moisture. Do not spill liquids on the housing 

13.

 

Please pay attention to warning symbols during transit and placement 

14.

 

Terminals marked with the   symbol are HAZARDOUS LIVE and should only be connected by qualified personnel 

15.

 

Ensure that the apparatus is connected to a mains socket with a protective EARTH connection 

16.

 

Ensure correct operation of the mains switch 

 

Warning 

 

To prevent the risk of fire or electric shock, do not expose any components to rain or moisture. 

If liquids are spilled on the casing, 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 case 

No user serviceable parts inside 

 Do not open the case 

 refer all servicing to qualified service personnel. 

 

Safety 

 

 

Check for correct mains voltage and condition of IEC lead before connecting to power outlet 

 

It is recommended to use speaker wire with a minimum current rating of 6A per output. 

 

Do not allow any foreign objects to enter the case or through the ventilation grilles 

 

Placement 

 

 

Keep out of direct sunlight and away from heat sources 

 

Keep away from damp or dusty environments 

 

For rack-mounting, use the rack ears provided and ensure adequate support for the weight of the amplifier 

 

Ensure adequate air-flow and do not cover cooling vents 

 

Ensure adequate access to controls and connections 

 
Cleaning 

 

 

Use a soft cloth with a neutral detergent to clean the casing as required 

 

Use a vacuum cleaner to clear ventilation grilles of any dust or debris build-ups  

 

Do not use strong solvents for cleaning the unit 

 

 

Содержание A2

Страница 1: ...2 Rackmount Stereo Amplifier with Media Player Item ref 953 402UK User Manual Version 1 0 Caution Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty ...

Страница 2: ...r moisture Do not spill liquids on the housing 13 Please pay attention to warning symbols during transit and placement 14 Terminals marked with the symbol are HAZARDOUS LIVE and should only be connected by qualified personnel 15 Ensure that the apparatus is connected to a mains socket with a protective EARTH connection 16 Ensure correct operation of the mains switch Warning To prevent the risk of ...

Страница 3: ...t 6 3mm jack 7 Line 1 input volume control 18 Mic 1 volume control 8 Line 2 input volume control 19 Mic 2 volume control 9 Stereo input selector 20 Talkover on off button 10 Bass EQ control 21 Output Signal Clip indicators 11 Treble EQ control 22 Ventilation grille do not obstruct airflow 27 Line output 23 FM antenna connection F type 28 Channel 1 speaker output 4mm binding posts 24 Line 2 input L...

Страница 4: ...ernal media player Connect wired microphone s to the Mic 1 and or Mic 2 jack inputs 6 3mm on the front panel 16 17 The volume level of these is controlled by the Mic 1 and Mic 2 volume controls 18 19 A smart phone tablet or mp3 player can be connected to the Aux jack 3 5mm on the front panel 4 The volume level of this stereo input is controlled by the Aux volume control 5 To hear this input throug...

Страница 5: ...a short flash of this LED may be indicating distortion or clipping of the output signal and the output channel volume control should be turned down Any microphones connected should not be able to hear the speakers which can cause feedback squealing or howling and should not be pointed towards the speakers If this still happens turn down the volume for that microphone and adjust Bass and or Treble ...

Страница 6: ...e paused and resumed by pressing Pressing REP sets the repeat mode random single track folder all tracks Pressing EQ sets the preset bass pop rock jazz classical normal FM Tuner The FM tuner function operates in the same way as a standard FM radio and benefits from the connection of an FM antenna to the rear panel F type connector Press the media player MODE button until the display shows a freque...

Страница 7: ...ode is selected connection should resume when Bluetooth mode is re selected If Bluetooth is disabled on the sending device or paired to a different receiver it will be necessary to re connect the sending device to the A2 from step 2 above to re establish a Bluetooth link Media player remote control In addition to front panel controls the media player can be operated via the supplied I R remote han...

Страница 8: ...ed properly remove and re insert Check file types standard mp3 digital audio files required Check memory device works on a PC or Mac for standard playback Bluetooth cannot connect Ensure that Bluetooth is enabled on sending device Ensure that the sending device is within Bluetooth range 5 10m Check that the device is connecting to A series No audio from Bluetooth device Ensure that volume controls...

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