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952.984UK User Manual 

Introduction 

 

Thank you for choosing the Adastra AS-4 DAB/DAB+/FM tuner with Bluetooth and USB player as a 

professional audio source. This unit is designed to offer high quality audio for background music systems. 

Please read this manual to gain the best results from your product and 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.

 

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 
Do not allow foreign objects into the USB port. 

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 fig.8 mains lead before connecting to power outlet 

 

Placement 

 

 

This unit can be used free-standing o

r fixed into a 19” rack

 

 

Ensure adequate support and access to controls and connectors when rack-mounting 

 
Cleaning 

 

 

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

 

Use a vacuum cleaner to clear apertures and controls of any dust or debris build-ups  

 

Do not use strong solvents for cleaning the unit 

 

 

 

 

 

Summary of Contents for AS-4

Page 1: ...AS 4 Audio Source DAB FM BT USB Item ref 952 984UK 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: ... 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 Ensure correct operation of the mains switch Warning To preven...

Page 3: ...cycle through DAB FM Bluetooth USB and Auxiliary modes The VOLUME dial 15 governs the output level of any selected source In any mode press MENU 8 to enter the System menu DAB and FM have additional options see below In the System menu step through options via the TUNING dial 14 or pressing buttons 12 13 Select an option by pressing the TUNING dial to confirm Navigate sub menus in the same way Edi...

Page 4: ... Tune into the available DAB DAB stations via the Station scan menu Press the MENU button in DAB mode and the display will show as follows The System menu is described in the table above Press the TUNING dial on the Station scan option and the display will show 2 tuning options Press the TUNING dial on the Full scan option to auto tune all available DAB DAB stations Press the TUNING dial on the Ma...

Page 5: ...p through available stations briefly press the TUNING dial To auto tune all available FM stations press and hold the TUNING dial After auto tuning the buttons can step through stored stations Press the MENU button in FM mode and the display will be as follows The System menu is described on the previous page Press the TUNING dial on the Audio setting option and the display will show 2 tuning optio...

Page 6: ...ts If the sending device goes out of range the AS 4 will enter pairing mode again Note if there is no playback after 15 minutes the AS 4 will automatically switch to standby mode USB Mode For playback of mp3 tracks from a USB memory device up to 32GB connect the device to the USB port 3 If there is no USB device or the device is not recognized the display will show No USB Playback of tracks will n...

Page 7: ...tion same function as pressing the TUNING dial VOL VOL Adjust output level Specifications Power supply 100 240Vac 50 60Hz fig 8 DAB frequency range 174 240MHz FM frequency range 87 5 108MHz USB port USB 1 0 1 1 2 0 up to 32GB FAT16 32 Antenna connection RF coax FM DAB aerial supplied Display Backlit LCD for track info frequency DAB DLS B T pairing Auxiliary input 3 5mm stereo jack Headphone output...

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