8 Channel ISDN Mixer type GSGC8
GENERAL
Our well known GSGC4&5 ISDN units are ideal for self operation by commentators
and reporters but this new mixer is for use at larger sports events that boast the luxury
of an operator. One main requirement was to keep this unit as small and lightweight as
possible. The overall size is only 407 x 308 x 127 mm and the overall weight is
only 5700 grams.
ISDN FACILITIES
Using identical terminal adapter and codecs as developed for our GSGC4&5, all
dialling, calling and software configurations are exactly the same. Any of the current
four Glensound Codecs can be fitted, namely G722, APTX, DUAL (G722 & APTX), or MPEG
Layer II which again is really a dual codec because it also operates at G722. An X21 port
is fitted on the rear panel so that it is possible to feed an external TA or a satellite
terminal.
CHANNEL FACILITIES
Basically an eight channel mono mixer, all channels are Mic/Line switchable and
have phantom power. Full length faders are fitted with simple momentary PFL buttons. EQ
facilities consist of a switchable 12dB/octave high pass filter and a mid range bell shape
control to provide +/- 10dB at either of two frequencies. Each channel also has a channel
gain control as well as an auxiliary gain control feeding a separate auxiliary mix bus. An
output toggle switch can route the channel output to compressor A or B or both.
COMPRESSORS
Two independent compressors are provided so that one can be used for the
commentators while the other can take care of the crowd effects. Each compressor has an
adjustable threshold level of +/- 10db, a three position switch to set the recovery time
as fast-auto-slow, and a second three position switch to set the compression ratio
as 1, 5 or 10:1. the 1:1 position acts as a by-pass switch. Four LEDs are provided with
each compressor to indicate the degree of compression.
OUTPUTS
Available on jacks are individual outputs after the A & B compressors, a final
mono output and the auxiliary output. In addition there is a full line drive capable of
the final mono signal on an XLR.
FRONT VIEW OF GSGC8
MONITORING
Three LED column PPMs are provided, two measuring the A and B outputs while the
third is switchable between the main M output and the auxiliary output. A simple 4 input
mixer is also provided for the operators headset. Inputs are main output, PFL, Cue
programme (the return feed from the ISDN circuit) and a local jack input. The cue input
can also be overplugged from a local source if required. Internal links are provided so
any source can be fed to either or both ears.
COMMENTATORS HEADPHONES
Similar four input mixers are provided for two pairs of commentators headphones. On
these mixers however, the PFL input is replaced by a talkback input.
TALKBACK & IDENT
A front panel mic is included so that the operator can talk to either commentator
or the main output. He can also record a short ident signal that can be repeatedly played
to the main output. This ident signal can be up to 16 seconds, any unused time being
filled with 1kHz tone. The recorded message will be remembered even in the absence of
power.
POWER SUPPLY
Although normally operated from AC Mains (switch mode PSU 115v to 230v) it can be
powered from an external 24 volt battery.
Links to Other ISDN Pages
GSGC5 GSGC6 GSGC8
GSGC9 GSGC17
GSGC24A GSGC25 GS3U-057 TX
RESERVE
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