Gilderfluke&Co old MACs 8 bit Digital Audio System User Manual

Page 36

- GLOBAL BUS feed from Pri Mix Point (ÔPRI GLO FEEDÕ installed) -

DIGITAL

AUDIO

REPEATER

VOLTAGE

CONTROLED

AMPLIFIER

PUBLIC

ADDRESS

SYSTEM

OPTO

ISOLATION

35Khz

LOWPASS

FILTER

SHELVING

EQUALIZER

OUTPUT

DRIVERS

PA AUDIO & CONTROL SIGNALS

FROM MA-100 MASTER

GLOBAL/MIX BUS #1

GLOBAL/MIX BUS #2

GLOBAL/MIX BUS #3

GLOBAL/MIX BUS #4

AUXILIARY INPUT

EXTERNAL MIX INPUT 'A'

EXTERNAL MIX INPUT 'B'

VCA BUS

VCA IN/OUT

VOLUME

1/2

MUTE

(or Optional
High or Low
Pass Filters)

OUT

ISOLATED

POWER SUPPLY

VOLUME

BASS

TREB.

10v REF.

START & STATUS

ÔPRI GLO FEED': When you want to feed the audio signals from this cardÕs primary mix point to feed

the GLOBAL BUS. The primary mix point is ÔupstreamÕ of the VCA, PA, and all other audio
processing, so it will be the ÔrawÕ audio data which will be fed to the bus. You must also turn on
one, and only one of the ÔMIX BUSÕ switches. This configuration card is used when you want to
feed the audio from this card, and only this card, to any number of other cards in the system
(the cards which will listen to the global bus must be configured with the ÔGLO LISTENÕ
configuration card and the same ÔMIX BUSÕ switch turned on as on this card).

The ÔBUS FEEDÕ pot on the front panel of the DR- Repeater card you are configuring

controls how ÔhotÕ a signal is sent to the GLOBAL BUS from this card. The level of the signal
picked up by the other cards which are listening to this GLOBAL BUS can be set at those in-
dividual cards, and so the BUS FEED pot is usually set fully clockwise on this card and the level
adjustments are made elsewhere.

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