Appendix B - Performance Specification; Audio Performance; Superanalogue Channel Microphone Amplifier; Superanalogue Channel Line Input Amplifier - Solid State Logic SiX User Manual

Appendix B

Appendix B - Performance Specification

Audio Performance

Default test conditions (unless otherwise stated):
Source impedance of Test Set: 40 Ω
-
Input impedance of Test Set: 200 kΩ
-
Reference frequency: 1 kHz
-
Reference level: 0 dBu where 0 dBu = 0.775 V into any load
-
All unweighted measurements are specified as 22 Hz to 22 kHz band limited RMS and are expressed in units of dBu
-
The onset of clipping (for headroom measurements) should be taken as 1% THD
-
All distortion measurements are specified with a 36dB/Octave low pass filter at 20 kHz and are expressed as a percentage
-
All levels are intended balanced
-
Unless otherwise quoted all figures have a tolerance of ±0.5 dB or 5%.

SuperAnalogue Channel Microphone Amplifier

Measurement
Gain
Input Impedance
Max Input Level
Output Headroom
Frequency Response
THD+Noise
CMRR
Equivelant Input Noise (EIN)

SuperAnalogue Channel Line Input Amplifier

Measurement
Gain
Input Impedance
Hi-Z Input Impedance
Max Input Level
Output Headroom
Frequency Response
THD+Noise
CMRR
Equivelant Input Noise (EIN)
28
Conditions
**dependant on potentiometer tolerances
1% THD
20Hz to 20kHz
-
-3dB high rolloff
-
(-20dBu applied, +30dB gain) @ 1kHz (filter 22Hz to 22kHz)
(-10dBu applied, +30dB gain)
150Ω termination, maximum gain
Conditions
**dependant on potentiometer tolerances
1% THD
20Hz to 20kHz
-
-3dB high rolloff
-
(-20dBu applied, +30dB gain) @ 1kHz (filter 22Hz to 22kHz) < 0.0015%
150Ω termination, maximum gain
Value
Variable from +6dB to +72dB**
1.2kΩ
21 dBu
>+27dBu at onset of clipping
+0.1/-0.3dB
-
> 100kHz
-
< 0.0015%
-
> 80dB
-
<-127.5dBu
-
typically -129dBu
-
Value
Variable from -3dB to +63dB**
10kΩ
1MΩ
>+27dBu before clipping
>+27dBu at onset of clipping
+0.1/-0.3dB
> 100kHz
> 70dB
<-110dBu
SiX User Guide