Cooper Sound CS 208, Operator'S Manual

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MODEL CS 208
22
CD in: Assigns channel to CD mix busses via the pan pot.
A,C = Left B,D = Right (eg: To assign channel to A only - AB in, CD out, pan left).
Limiter: Attack and release times are preset internally.
There are jumpers to change the attack and release times.
(See application notes AN 2D.)
Attack: Too fast an attack time will attenuate the leading edge of the wave form, therefore changing the
sound characteristic.
Release: Too slow a release time becomes quite audible with speech as the background noise level can change
between words. The attack and release time settings do interact with the threshold adjustment,
therefore the threshold may need to be readjusted if these settings are changed.
PFL: For monitoring on the phones 1 output. Sends selected channel to ‘phone 1’ only. Cuts out all other
inputs to ‘phone 1’ when operated (eg: may be used for pre-checking inputs not yet active).
Can be changed to AFL with internal jumpers. (See application note AN 2C.)
Aux 1, 2: PF = Pre-fader, AF = After-fader.
A separate mix may be made using these busses. Levels are matched pre/post with the channel fader
at ‘0’. Master gains are on the output module. Note: Insure that unused channel auxiliary pots are
set at minimum.
Channel
Fader:
For optimum headroom and versatility it is best to operate the channel fader around the zero point.
Therefore, the microphone pre-amp gain trim should be adjusted during rehearsals with the channel
fader at ‘0’ so that the average program level will modulate the meter to ‘0’ dB. During the take, the
channel fader may be used for controlling the channel gain.
O/L LED:
Nominally set for 3 dB below M. O. L. (maximum output level) with the channel fader at ‘0’. Occasional
flash of the indicator on peaks is not a problem. If the indicator is consistently on, microphone pre-amp
gain should be reduced. Can be set to indicate limiter action. (See application note AN 2C.)
‘S’:
Optional switch for M/S mic configurations. (See application note AN 2E.)
Pan Pot:
Used either for stereo music applications, selecting Left or Right for multi-track recordings, or left for
one track mono recorders. ‘Multi-track’ - sometimes it is useful to separate the boom microphone from
the radio microphones inputs. Therefore a mix may be made in post-production to obtain the
perspective of the shot. An additional benefit is that if there are radio microphone transmission
problems during the take, the boom microphone recording will remain unaffected.
OPERATION & APPLICATION NOTES
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