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Summary of Contents for Adastra A4-PLUS
- Page 1 A4-PLUS Rackmount Stereo Amplifier with Media Player Item ref: 953.434UK User Manual Version 1.0 Caution: Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty...
- Page 2 Introduction Thank you for choosing the Adastra A4-PLUS rackmount dual stereo amplifier to power your public address system. This amplifier is designed to offer high quality, reliable 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.
- Page 3 25. Line output Ch3+Ch4 Channel 3 speaker output +/- 4mm posts 26. Channel 1 speaker output +/- 4mm posts Channel 4 speaker output +/- 4mm posts 27. Channel 2 speaker output +/- 4mm posts IEC mains inlet & fuse holder A4-PLUS User Manual...
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Page 4: Speaker Connections
The mix of mic/line inputs to Ch3+Ch4 can be fed onto further equipment via the RCA line output (25) For good reception of FM radio stations (if needed) in the media player, the A4-PLUS has an “F” connector on the rear panel (23) which can be connected to an external FM antenna (aerial) Connect the IEC power inlet (33) to the 230Vac mains supply, using the IEC lead provided. - Page 5 Adjust these EQ controls to suit the type of audio signal or compensate for the room acoustics. To avoid loud pops through the speakers, turn down the Ch1, Ch2, Ch3 and Ch4 volume controls before powering down. A4-PLUS User Manual...
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Page 6: Media Player
Media player The A4-PLUS amplifier is equipped with a multi-functional media player for playback of audio files from USB or SD media, FM radio stations or Bluetooth connection. Front panel controls are as described below. MODE Select between USB, SD, FM tuner & Bluetooth Repeat mode –... - Page 7 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 A4-PLUS 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.
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Page 8: Specifications
The full text of the EU declaration of conformity is available at the following internet address: http://www.avsl.com/assets/exportdoc/9/5/953434UK%20CE.pdf Errors and omissions excepted. Copyright© 2022. AVSL Group Ltd. Unit 2-4 Bridgewater Park, Taylor Rd. Manchester. M41 7JQ AVSL (EUROPE) Ltd, Unit 3D North Point House, North Point Business Park, New Mallow Road, Cork, Ireland A4-PLUS User Manual... -
Page 9: Eu Declaration Of Conformity
EU Declaration of Conformity AVSL Group Limited, Declare that the product: 953.434UK A4 PLUS Dual Stereo Amp 4 x 300W Has been manufactured in conformity with the following standards: EMC Directive: 2014/30/EU Standard Date EN 55032 2015 EN 55035 2017 EN 61000-3-2 2014 EN 61000-3-3... - Page 10 UK Declaration of Conformity AVSL Group Limited, Declare that the product: 953.434UK A4 PLUS Dual Stereo Amp 4 x 300W Has been manufactured in conformity with the following standards: Electromagnetic Compatibility Regulations 2016 Standard Date BS EN 55032 2015 BS EN 55035 2017 BS EN 61000-3-2 2014...
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