Formula Sound PM-100 Gebruikershandleiding - Pagina 8

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PM-100 Master Module continued

CROSSFADE

The XF-A and XF-B busses are fed to the crossfade circuitry. The crossfader is a 45mm fader which

can be used to smoothly fade between the XF-A and XF-B busses.

The crossfade system uses studio quality V.C.A.'s (voltage controlled amplifiers) to Improve

crossfader life and also ensure good attenuation at the ends of travel.

Red and green leds positioned at the fader ends correspond to the XFA and XFB routing switch

illumination colours which gives good visual routing status.

CONTOUR

A contour control is provided which allows the operator to adjust the crossfader characteristics to suit

personal taste, from a gentle fade between A and B to a more aggressive fade towards the ends of

the fader.

PUNCH

A fast momentary action push button is fitted to provide rapid switching effects. The action of this

switch is to turn on both XF-A and XF-B busses irrespective of the fader position. Depending on how

channels are routed to crossfader this can provide several effects for the creative D.J.

INSERTS

Insert sockets in the form of 3 pole 1/4" jacks are provided for the connection of external signal

processing equipment. Located on the rear panel the connections are:-

Tip

= send (mixer output)

Ring = return (mixer input)

Body = common (ground)

These sockets have switching contacts so that if a plug is not inserted the signal path is maintained.

Insert sockets are provided for the following functions:-

XFA left and right for the connection of filters etc. into the XFA signal chain.

XFB left and right for the connection of filters etc. into the XFB signal chain.

MIC left and right for the connection of signal processing equipment, compressors, limiters etc. into

the microphone signal chain.

Master Insert left and right for the connection of signal processing equipment into the main output

chain.

Individual microphone inserts are also provided on the input channel modules.

RECORD OUTPUTS 2 pairs of gold plated phono sockets are provided for the connection of stereo

recording equipment. One pair provides the complete programme mix; the other pair provides the

mix of music sources only. AVO does not affect this output. All record outputs are unaffected by the

master controls.

SUB BASS OUTPUT A mono output via a 1/4" 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 located on PC-344 allows higher bass output if required.

LIGHTING TRIGGER A mono fully floating transformer isolated trigger output is available on a 1/4"

jack to provide safe connection to lighting equipment.

PRIORITY

A priority input with adjacent level trim control and control socket are provided to help comply with fire

regulations. The fire alarm panel needs to provide a fully floating pair of contacts to join the two pins

on the control connector.

Internal jumpers located on PC-342 provide the option to mute all signals or leave mic signals active

and intoduce the priority signal.

The priority input may not be required if existing microphone inputs are to be used for evacuation.

This will depend on local fire regulations.