Formula Sound FSM-400, Руководство пользователя

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BOOTH - controls the booth output level. This output may be used to provide a local monitor
output. To eliminate any possibility of feedback no microphones are fed to this output.
Stereo or mono outputs are available via the 0.25” jacks on the rear panel.
PHONES - the master volume control for the headphone monitoring system. Two stereo
jacks are provided, one on the front panel and one on the rear. STEREO jacks must be used
- a mono two circuit jack will present a short to one half of the phones amplifier and although
current limiting protection is included, prolonged use should be avoided. The phones
amplifier is very powerful and capable of delivering over 1 Watt per channel into the optimum
load of 30 ohms.
MASTER - controls the level of the main output and features balanced outputs on XLR
connectors as well as a separate mono output on a 0.25” jack.
CROSSFADE - A 45mm fader is featured that can be used to smoothly fade between the
XF-A buss and XF-B buss. To improve crossfader life and also ensure good attenuation at
the ends of travel, studio quality VCA circuits have been used. The use of VCA’s over
conventional faders give superior crossfade performance.
PUNCH - A momentary action push button is fitted, which when pressed, switches both XF-A
and XF-B signals on. Wherever the crossfader is set pressing the punch button will always
add the opposite side. The Punch circuit action is click free, and provides the creative
operator with a useful facility.
ZONE - controls a further output similar to the master output but without the balanced output
driver. Stereo or mono outputs are available via the 0.25” jacks on the rear panel.
TALK OVER - circuitry is included that is selected via an illuminated push button. The action
of this circuit is to attenuate the music when the switch is pressed. The attenuation level of
the music is variable - turning the pot clockwise turns up the music.
RECORD OUTPUTS - Two sets of stereo record outputs are available via phono connectors.
One is a complete programme mix, the other is music sources only (similar to the booth
output). All record outputs are unaffected by the master controls.
SUB BASS OUTPUT - a mono output via 0.25” jack is provided for driving a sub bass
loudspeaker system to enhance low frequency performance. The filter allows frequencies
below 70Hz to pass through. An internal jumper allows higher bass output if required.
SOUND TO LIGHT (TRIG) - a fully floating transformer isolated trigger output is available on a
0.25” jack to provide safe connection to lighting equipment.
REMOTE MUSIC MUTE - To cater for the increasing requirement to mute music signals in
entertainment venues when the fire alarm is activated the FSM-400 has provision to remotely
mute all music sources by linking two pins on the connector provided. The fire alarm panel
needs to provide a fully floating pair of contacts which close when the alarm is activated. An
l.e.d. positioned below the V.U. meter clearly shows if the music mute is activated