AVSL 953.112 RM SERIES User Manual
Page 4
RM Series User Manual
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 “+” and “-” of the battery to the 24Vdc INPUT (15) on the rear panel. Ensure that DC
cables are capable of handling the current (10A min. recommended)
The RM series amplifiers have a total of 5 input channels. MIC 1 input (25) is fed to a dedicated
microphone channel. Connect the main announcement microphone to this channel using a balanced
XLR lead.
DIP switches
MIC 1 channel has an option for +20V phantom power for
condenser microphones and paging microphones with chimes.
MIC 1 also has the option of VOX control, which attenuates the
line input channels 4 and 5 by -40dB when MIC 1 signal is
detected and returns them to normal when MIC 1 signal is silent.
These features are set by DIP switches (24) as shown here.
Moving the DIP switch down will switch the feature ON.
MIC/LINE 2 (23) and MIC/LINE 3 (22) jack inputs can be set to
MIC or LINE sensitivity to suit the type of input being used.
Moving the relevant DIP switch down selects LINE sensitivity.
Moving the DIP switch up selects MIC sensitivity.
Be sure to make these DIP switch settings when the amplifier is switched off. Making any changes
when the amplifier is powered up may cause loud bangs through the system which can damage the
speakers.
Connect microphones or mono line inputs to MIC/LINE 2 and MIC/LINE 3 inputs using good quality
6.3mm jack leads. Make sure the correct sensitivity is selected for the type of input source.
Connect any other line level audio inputs to the LINE 4 (21) and LINE 5 (20) connectors on the rear
panel using good quality RCA leads. Since RM series amplifiers are mono output, stereo signals will
be summed together.
Further mixer-amplifiers or slave amplifiers can be connected from the rear LINE OUT sockets, again
using a good quality RCA lead. This output carries the full mix of all channels 1 – 5 as produced
through the speakers.