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GENERAL
Type:
FET:
Mercury Battery:
Microphone Output
Terminal:
Dimensions:
Weight:
Finish:
PERFORMANCE
Directivity:
Frequency Response:
Output Impedance:
Output Level
(deviation + 3dB):
Power Requirements:
MICROFILM
SPECIFICATIONS
Electret condenser microphone
(with back-electret condenser)
Junction FET x 2
EVEREADY
No. EPX675
Two Way Plug
16x 121mm
21/,, x 47/, inches
120g, 4.2 oz (including battery)
Silver Alumite
Uni-directional
70 Hz to 15,000 Hz
Low impedance unbalanced
Open circuit voltage*:
-70.0 dB (0.32 mV)
,
*0 dB =1 mW/10yubar at 1,000 Hz
Recommended
load impedance is more
than 3kQ.
Normal operating voltage: 1.35
V DC
Minimum operating voltage: 1.1 V DC
Current drain: Less than 1.0mA
Battery life: Approx. 180 hours with
EVEREADY
No. EPX675
Noise Level:
Maximum Sound
Pressure Input Level:
(at 1,000 Hz,
1 % distortion)
Dynamic Range:
Environmental
Temperatures:
Signal-to-noise ratio;
More than 42 dB (1,000 Hz, 1ubar)
Inherent noise; Less than 32 dB SPL
(with the wind screen)
Less than 50dB SPL.
(OdB=2x 10% wbar)
More than 94dB
-20°C to +60°C for storage
0°C to +60°C for operation
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