Casella CEL CEL-206 - Manual (Page 5)

Casella USA
17 Old Nashua Rd #15
Amherst, NH 03031 USA
For those applications where a more accurate system is required the CEL-208 multi-
threshold unit may be connected to the noise level limiter. This will indicate the
levels in 10 steps by means of a series of power contact closures enabling, for
example, calibrated 'light columns' to be constructed as part of the light show.
Such an arrangement gives the artistes a clear and continual real-time picture of
the sound level in the auditorium.
The CEL-206 is provided with two conventional power outlets, one activated when the
threshold is exceeded and the other disconnected after the delay period. These are
for the remote warning and amplifier power cut-off respectively and, if required,
they can be directly wired via knock-outs in the enclosure. The internal relays are
suitable for switching the power in small and medium sized installations and for
large systems, etc, they are used to control external power actuators. Similarly, where signal
attenuation control is being employed, up to four lines are controlled direct but, if more are
required, the CEL-209 Automatic Multi-Pole Attenuator box may be connected to extend the number up
to 28. (12 ways per CEL-209 hence two may be operated simultaneously).
2 INSTALLATION.
2.1 Schedule of parts
The description CEL-206 Noise Limiter complete refers to the following items and
should be checked upon receipt against this schedule:
CEL-206 Noise Level Limiter
CEL-3418 Microphone and preamplifier assembly c/w mounting bracket
CEL-3774 Extension cable 10m
Allen Key
In addition the following accessory items will be found useful and these will
be shown separately on advice notes, etc:
CEL-3381/20 Microphone Extension Cable - 20m
CEL-3482 Windshield
CEL-184 Calibrator (NB coupler type CEL-2834 required)
CEL-208 Multi-threshold Unit
CEL-209 Multi-pole Attenuator Box
CEL-211 Light Column for use with CEL-208
2.2 Microphone System
The important consideration in respect of microphone location is to ensure that
it reflects the actual noise level that is to be controlled.
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