Cadac S-Type - Manual (Page 63)

Technical specifications SPEC-I
Revision S2005-6 S-Type
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Electronically balanced: Input impedance is 1k2Ohms
Gain is continuously variable from 10 to 60dB. CMRR is better than 80dB.
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All outputs are electronically balanced. The output impedance is 33ohms in series
with 1000uF. Maximum output is +21dBu into 2kOhms.
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All mixing busses are of the differential current summing type, providing 80dB rejec-
tion of external noise fields. The system is designed so that the gain of the summing
amplifier is proportional to the number of channels routed to the bus. For example,
the basic noise contributed by a group-summing amplifier with no inputs selected, is
typically -105dBu.
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Output noise: Better than -85dBu
Frequency response: 20Hz to 20kHz ±0.5dB
Maximum gain: Microphone input to sub-group output = 80dB
Total harmonic distortion: Output level into 2kOhms = +20dBu:
20Hz 50Hz 100Hz 1kHz 10kHz 20kHz
<0.02% <0.02% <0.03% <0.04% <0.06% <0.08%
Measured from a microphone input (10dB gain) to a sub-group output, with the input
channel VCA fader and sub-group fader set at ‘0’ (unity gain). The equaliser is in cir-
cuit and the controls set flat.
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<6 ž# at 30Hz; input to output
Measured by applying a a tone to the microphone input at 10dB gain, routing that
channel (EQ selected and set flat) to a sub-group.
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MIC input (+10dB gain) to:
Matrix +0/-0.5dB 20Hz-20kHz
+0/-3dB
20Hz-60kHz
Aux +0/-0.5dB 20Hz-20kHz
+0/-3dB 20Hz-75kHz
Direct output +0/-0.5dB 20Hz-20kHz
+0/-3dB 20Hz-110kHz
Sub group +0/-0.5dB 20Hz-20kHz
+0/-3dB 20Hz-72kHz
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+20dBu into 2kOhms, VCA in circuit, fader set 0dB, EQ in and flat
0.012% at 1kHz
<0.03% 20Hz-20kHz
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