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CM/CS Series User Manual 

 

Caution: Please read this manual carefully before operating 

Damage caused by misuse is not covered by the warranty 

 

Introduction 

 

Thank you for choosing the Adastra CM/CS-series compact 100V amplifier as part of 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. 

 

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 

 

Use double insulated speaker wire with adequate current rating for 100V speaker connections 

 

Do not use 8Ω and 100V terminals at the same time 

 

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 an appropriate shelf unit (e.g. 853.055UK) and ensure adequate support 

 

Ensure adequate air-flow and do not cover cooling vents at the front and rear of the amplifier 

 

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 

 

 

 
 

 
 
 

 
 
 
 

 
 

Summary of Contents for CM30

Page 1: ...CM CS Series User Manual CM CS SERIES Compact 100V amplifiers Item ref 953 100UK 953 101UK 953 102UK User Manual ...

Page 2: ...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 Use double insulated speaker wire with adequate current rating for 100V speaker connections Do not use 8Ω and 100V terminals at the same time Do not allow any foreign objects to enter ...

Page 3: ...D volume control 5 MASTER volume control 6 FOG button 7 SIREN button 8 ALERT button 9 VU meter 10 USB SD audio player 11 POWER switch 12 Mains voltage switch 13 IEC mains inlet fuse holder 14 DC power terminals 15 COM speaker terminal 16 8Ω speaker terminal 17 100V speaker terminal 18 LINE OUT connectors RCA 19 LINE IN connectors RCA ...

Page 4: ... so any stereo signals will be summed together and reproduced as a single output The signal maybe continued onto further amplifiers by connecting the LINE OUT connectors 18 to the LINE IN connectors of the next amplifier again using good quality RCA leads Connecting CM series mixer amplifiers For CM series mixer amplifiers connect any line level audio inputs to the LINE IN connectors 19 on the rea...

Page 5: ...ingle amplifier is the power rating For most purposes it is advised to connect as many speakers as needed with a combined wattage of no more than 90 of the amplifier s output power rating The terminals of a 100V speaker are connected to a transformer and in some cases this transformer may be tapped for different power ratings These tappings can be used to adjust the wattage and output volume of ea...

Page 6: ...initial test can be made using the built in USB SD audio player See USB SD audio player section below for instructions If a microphone is connected make sure it is switched on and gradually increase the MIC control 2 whilst speaking into the microphone until the required volume level is reached Note The microphone should not be able to hear the speakers which can cause feedback squealing or howlin...

Page 7: ...AT button 2 once to continually repeat the current track press REPEAT again to enter the random track selection mode Pressing the EQ button 4 steps through 5 preset equalizer settings offering different tonal responses to suit the type of music or compensate for room acoustics Pressing the Previous track button 6 briefly steps backwards through tracks on the memory device Press and hold this butto...

Page 8: ...transport controls Check memory device is connected properly remove and re insert Check file types standard compressed digital audio files required Check memory device works on a PC or Mac for standard playback Output is very loud or distorted Check level of input signal is not too high Reduce MIC LINE IN USB SD and or MASTER level Ensure Hi Z line level input s not connected via MIC input Output ...

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