AKG Acoustics C2000B manual Powering, Recommended Applications Preferred

Applications

Its capsule design and pickup pattern make the C 2000 B 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 operates on any phantompowersourceto IEC 61938. This

standardC 2000specifiesB a positive voltage of 12, 24, or 48 VDCto onDINboth45 596audio/ IECwires61938referenced. This standardto the cablespecifiesshieldpositive. Alternatively,voltage ofyou12,can24, operateor 48 VDCthe onmicrophonethe two audioon anylinesDCreferencedvoltage betweento the cable9 andshield52 V.fedAlternatively,to the microphoneyou can

operatevia standardthe microphonephantom poweron anycircuitryDC 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:

Vs	Rv	2 x Rv
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.

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