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RM SERIES Rackmount 100V mixer-amplifiers Item ref: 953.110UK, 953.111UK, 953.112UK User Manual...
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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 RM-series rackmount 100V amplifier as part of your public address system. This amplifier is designed to offer high quality, dependable service for mobile and installed systems.
Front panel USB/SD audio player (+FM tuner RM240S) MIC 1volume control MIC/LINE 2 volume control MIC/LINE 3 volume control LINE 4 volume control LN5/USB volume control BASS EQ control TREBLE EQ control MASTER volume control VU meter LEDs POWER switch Speaker zone switches (RM240S only) Rear panel Mains voltage switch...
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Connection and setup Connect the rear IEC inlet (14) to the mains using the supplied mains lead (or an equivalent approved type). Ensure that the voltage is correct as indicated on the voltage selector (13) and that the mains outlet is switched on. Alternatively, the amplifier can be powered by a 24V battery, such as a lorry or boat battery, by connecting the “+”...
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Speaker outputs The RM series amplifiers can be used either as 100V line amplifiers or standard low impedance power amplifiers. These 2 configurations cannot be used together, so it is important to decide which method will be used at the start. 100V line systems For 100V line systems, connect the amplifier to the first speaker in the system using double-insulated speaker wire which has adequate current rating to handle the total output of the amplifier.
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Operation When all connections to the amplifier are made, turn all rotary controls down and switch on the power (11) and a power “ON” LED will illuminate. Turn BASS and TREBLE controls to the 12 o’clock position (pointing straight up) and turn the MASTER rotary control (5) up part way for testing. Ensure a signal is being fed to one of the line inputs 2, 3, 4 or 5 and gradually increase the volume control for that channel until the output is heard through the speakers.
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Next track/FM channel or volume up LED digital display RM60 and RM120 are fitted with a built-in USB/SD audio player. This unit allows playback of music or audio messages which are stored as standard compressed audio files on either USB pen drive or SD card.
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