The A15AS attenuator operates by, in effect, bridging the micro-
phone output and allowing maximum signal handling with mini-
mum loading-caused distortion or reduction in clipping level.
Thus high-output condenser microphones or low-impedance dy-
namic microphones used at very high sound pressure levels can
be connected to ordinary low-impedance inputs with appropriate
attenuation for each application.
The impedance at the input end (three-socket connector*) of the
A15AS is 1,000
Ω
; the impedance at the output end (three-pin
connector*) is 150
Ω
. The equivalent single series simplex-pow-
ering resistance is 215
Ω
; this resistance should be considered
in addition to any existing circuit resistance when using the atten-
uator.
*Designed to mate with Cannon XL series, Switchcraft A3 (Q.G.) se-
ries, or equivalent.
SPECIFICATIONS
Frequency Response
Flat, 20 to 20,000 Hz
0.5 dB
Impedance
Input: 1,000
Ω
Output: 150
Ω
Attenuation (switch selectable)
15 dB, 20 dB, or 25 dB
Case
Full magnetic shield; steel with gray enamel finish
Dimensions
19 mm (
3
/
4
in.) diameter; 114 mm (4
1
/
2
in.) long
