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4 Specifications
Signal to Noise: Better than –85
dB (equivalent input noise) 20
Hz to 20 kHz.
Common Mode Rejection: Bet-
ter than 60 dB at 1 kHz.
Crosstalk: –82 dB at 1 kHz.
Crosstalk:
Crosstalk:
Crosstalk:
Crosstalk:
Input Impedance: Nominally 20
kohm.
Recommended Source Imped-
ance: 10 kohm or less.
Maximum Input Level: +20 dB
at 1 kHz.
Nominal Gain: Unity.
Frequency Response: ±1 dB
from 20 Hz to 20 kHz with filters
Page 8
BALANCED
SOURCE
–
+
Fig. 3.6 Audio Wiring
set flat and horn equalization off.
High-pass (subsonic/bass) filter
has selectable –3 dB roll-off
points of 50, 100 or 300 Hz (see
Figure 4.2). Constant-directivity
horn equalization network has 3
dB rise at 3.2 kHz with 12.5 dB
peak at 24 kHz (see Figure 4.1).
Both these filters can be switched
off if desired.
A permanent RFI filter with a –3 dB
roll-off at 33 kHz also affects the
response.
Dimensions: 6
in. (16.2 x 4.8 x 9.8 cm).
Weight: 11 ounces (312 grams).
Note: All specifications refer-
enced to a 0.775 V input signal.
UNBALANCED
SOURCE
–
+
3
P .I.P .–FTE
7
7
/
x 1
/
x 3
/
8
8
8
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