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Case Reflections of the popular range using the Aco 7052 microphone:
Stalk length 75mm from front of microphone grid to top of case body.
Frequency (Hz)
Case Effect (dB)
31.5
0.0
40
0.0
50
0.0
63
0.0
80
0.0
100
0.0
125
0.0
160
0.0
200
0.0
250
0.1
315
0.1
400
0.1
500
0.1
630
0.1
Frequency (Hz)
Case Effect (dB)
800
0.2
1000
0.0
1250
-0.3
1600
-0.2
2000
-0.5
2500
0.4
3150
-0.2
4000
-0.1
5000
0.1
6300
0.1
8000
0.0
10000
0.0
12500
-0.2
16000
0.0
18
PRECAUTIONS
•
Only operate the instruments as described in this manual.
•
These are precision instruments, protect from shocks and vibrations.
•
Take special care with the microphone. The diaphragm is made from a very thin
metal and is easily damaged.
•
Ambient conditions for the operation of the unit are as follows:-
Temperature
Relative Humidity
•
Protect the unit from dust, water, extremes of temperature and humidity, direct
sunlight and air with a high salt or sulphur content.
•
Always turn the unit off after use. Remove the battery from the instrument if it is
not to be used for an extended period (several days).
•
Do not use any solvents or cleaning agents on the instrument. Use only a soft dry
cloth or a soft cloth lightly moistened with water when necessary.
•
Do not let any conductive objects, such as wire of metal scraps get into the unit.
•
Do not try to disassemble the instrument or attempt any repairs as this may
invalidate your warranty. Take a note of the condition of the instrument and
contact your authorised Castle service station.
•
To ensure continued precision performance of your instrument have it checked
and serviced at regular intervals.
-10°C to +50°C
30 to 90%
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