Formula Sound FSM8PLUS User Manual - Page 4
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Print PageVoice over
A voice override facility is provided that is enabled by an illuminated push switch on the front
panel. When enabled, if a signal is detected in the microphone equalisation path it triggers
attenuation of the music path allowing the microphone to be heard clearly, when the signal is no
longer detected the music will fade back to normal level.
The voice override sensitivity and the amount of attenuation may be adjusted if required via
internal pre-sets, see DRG 1017 fig J and fig K.
Set up
Connect music and microphone/mono sources to the channels required. Connect the priority
input if required to the 3 pin connector as indicated by the rear panel legend (for mono priority
input link pins 2 and 3).
Bass and AUX(iliary) outputs are located on a 3 pin connector below input 6.
To cater for the requirement to mute music signals in entertainment venues when the fire alarm
is activated the FSM8 Plus has provision to remotely mute all music sources by linking the two
pins on the back panel connector adjacent to input 7, this is normally done by a relay operated
by the fire alarm. All microphone channels routed through the microphone equalisation section
will operate normally.
Connect the output(s) to amplifiers as required.
Switch the unit on, set tone controls to mid position and master volume to ¾ clockwise. Set all
channel volume controls fully anti-clockwise. Ensure there is no priority signal.
Set channel 1 volume control to ¾ clockwise and apply a signal. On the rear panel adjust the
recessed gain pre-set adjacent to that input (using a small flat blade screwdriver) for the
required level.
Turn the volume control anticlockwise and repeat the procedure for all channels that are to be
used.
If the priority input is to be used play music through a music channel (volume set to ¾
clockwise) and then apply a signal to the priority input, on the rear panel adjust the recessed
gain pre-set above the priority input for the required level.
If the mute is being used play music through a music channel and operate the mute trigger (fire
alarm), check the music mutes and recovers when the trigger is removed.
Press the voice over button (VO) on the front panel and check it illuminates, play music and use
then use a microphone to check for satisfactory operation.
Play a signal through each channel in turn and check monitor and/or auxiliary is operating as it
should be.