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953.160UK User Manual 

Introduction 

 

Thank you for choosing the Adastra RM406 rackmount 6-zone mixer-amplifier as part of your public address 

system. This unit is designed to offer high quality, dependable service for mobile and installed 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.

 

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 

 

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

 

Only use 1 type of output per zone 

 

i.e. 4Ω, 8Ω or 100V –

 do not mix or combine these outputs on a single zone 

 

Do not connect 

4Ω or

 

8Ω speakers to the 100V terminal or 100V 

speakers to the 

4Ω or

 

8Ω terminal

 

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

 

Placement 

 

 

For rack-mounting, ensure adequate support for the weight of the amplifier 

 

Ensure adequate air-flow and do not cover cooling vents at the sides 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 Adastra RM406

Page 1: ...RM406 Rackmount 6 zone Mixer Amplifier Item ref 953 160UK User Manual Version 1 1 Caution Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty ...

Page 2: ...arning 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 ...

Page 3: ...utton 31 Zone 6 output level control 14 Zone 3 output LED indicators 32 Zone 6 monitor send button 15 Chime button 33 Zone 6 output LED indicators 16 Chime output level control 34 Monitor headphones output 17 Power indicator 35 Monitor output level control 18 SD card slot 36 Power on off switch 37 Voltage selector 47 Mains power inlet IEC and fuse holder 38 Zone 1 speaker output terminals 48 Zone ...

Page 4: ...ifier is switched off Making any changes when the amplifier is powered up may cause loud bangs through the system which can damage the speakers Priority and Emergency Activation The Mic Line 1 input also has a Priority switch 55 which attenuates all other channels when Mic Line 1 signal is detected and returns them to normal when Mic Line 1 signal is silent For buildings with a main emergency alar...

Page 5: ...t 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 in the case of the RM406 this is 40W per zone output The terminals of a 100V speaker are connected via a transformer and if necessary this transformer may be tapped for different power ratings These tappings can be used to adjust the wattage and output volume of each...

Page 6: ...he green LED follows the audio to show that the signal is present If the red LED lights for more than very short flashes this indicates overload to that zone In this instance the zone level control should be reduced until the red LED does not light The above process can be extended to check all zones and other input channels can be checked in the same way as for Mic Line 1 note in the case of Aux ...

Page 7: ... necessary to connect an external aerial to the Antenna connector on the rear panel using good quality coaxial RF cable terminated with an F type connector To auto tune available stations press and hold the Play Pause button to begin auto tuning which scans available stations and automatically stores them as channels within the FM tuner Alternatively to tune the station presets manually press the ...

Page 8: ...audio from media Press Play Pause button to check if track is paused Press the Source button to ensure that the required device is selected Check memory device is connected properly remove and re insert Check file types standard compressed digital audio files are 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 ...

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