AKG Acoustics C2000B Microphone User Manual


 
Applications
Its capsule design and pickup pattern make the C 2000B a perfect choice
for many applications both in the studio and on stage. Although the list
below is far from complete, it is a good starting point for making excellent
recordings. Please note that each instrument has its own distinct projection
pattern and the quality of the recorded sound ultimately depends on how
you place the microphone. You will therefore need to experiment to find the
optimum microphone placement for each instrument.
Recommended Applications
Preferred Recommended
Backing vocals Solo vocals
Acoustic guitar Upright piano
Zither Grand piano (rock & jazz)
Horn Violin
Saxophone Cello
Flute Clarinet
Harmonica Tom-toms
congas
Bongos
Snare drum
Cymbals
Hi-hat
Trumpet
Powering
The C 2000B operates on any phantom power source to DIN 45 596 /
IEC 61938. This standard specifies a positive voltage of 12, 24, or 48 VDC
on the two audio lines referenced to the cable shield. Alternatively, you can
operate the microphone on any DC voltage between 9 and 52 V fed to the
microphone via standard phantom power wiring.
Adding Phantom Power to Balanced Input Stages
Input transformer with center tap (floating):
Input transformer with no center tap (floating):
Standard values for Rv or 2 x Rv:
V
s
R
v
2 x R
v
12 V ±2 V 330 ohms 680 ohms
24 V ±4 V 680 ohms 1200 ohms
48 V ±4 V 3300 ohms 6800 ohms
In order to preserve symmetry, use 2 x Rv resistors with a maximum toler-
ance of 0.5% only.
If the amplifier inputs are single-ended (grounded) or have no input trans-
formers, wire either capacitors or optional transformers into the audio lines
to prevent any current leakage into the input stage.
7
The C 2000 B operates on any phantom power source to IEC 61938. This
standard specifies a positive voltage of 12, 24, or 48 VDC on both audio
wires referenced to the cable shield. Alternatively, you can operate the
microphone on any DC voltage between 9 and 52 V fed to the microphone
via standard phantom power circuitry.