11
C(ASE):
Pin 1 is connected to the case, the 100 nF
capacitor is bridged.
Please note that with jumpers in
LIFT or GROUND position
EMC problems might occure.
Theses are in the field of the
user´s responsibility !!!!
THE AMPLIFIER STAGE:
THEORY AND PRACTICE
The MIC-AMP C360's gain is effected by a so
called instrumentation amplifier. It is represen-
ted by an IC specially designed for this task,
distinguishing itself by very low noise figures
and a high gain/bandwidth product.
When gain is set to +60 dB (x1000), the
amount of noise added is only approx. 2 dB
more than the (theoretically) achievable
minimum.
The gain/bandwidth product (GBW) and the
slew rate are basically responsible for the
sonic quality of an amplifier. The higher they
are, the more transparent the sound becomes.
Slew rate is 10V/s, while the GBW is cal-
culated from the frequency response at a
certain gain ratio.
The MIC-AMP C360's internal linear frequency
response at +60 dB gain exceeds 200 kHz.
The resulting GBW is as high as 200 MHz
(200.000 Hz x 1000).
THE INPUTS
The back mounted balanced inputs appear as
gold plated XLR connectors. They are marked
“MIC IN 1/2“.
The inputs accept balanced as well as unba-
lanced audio signals. XLR wiring corresponds
to international standard with
- Pin 1 = ground,
- Pin 2 = + (in phase) and
- Pin 3 = - (out of phase).
If an unbalanced source must be connected,
one of the phases (preferably the negative
one) should be connected to signal ground.
THE OPERATION
THE OPERATION
