AKG AKGP820 Manuel de service télécharger pdf (Page 27)

P820 27

Operation

Using vacuum-tube electronics and a large-diaphragm transducer, the

P820 TUBE is suited for a wide range of applications. It will add the typical

warmth and richness tube microphones are famous for to female and male

voices as well as many instruments.

The following sections contain general hints on using the microphone and

suggestions on how to place the microphone for voices and various instruments.

NOTE

Please remember that vacuum tubes with their heater filaments are more delicate

than solid-state components. Even a drop from moderate height may cause the

filament to break and the microphone to fail. So always handle the microphone

with extreme care.

 Whichever polar pattern you select, it may be good to know which way the

transducer axis is facing: the front of the microphone is the side of the body

with the AKG logo on it.

 When recording wind instruments or vocals, make sure not to blow or sing

directly into the microphone.

To get professional sounding results with no unwanted wind and pop noise

(exaggerated "p" and "t" sounds), place an optional PF80 pop screen from

AKG between the microphone and vocalist/instrument.

 Keep the microphone dry. Moisture from blowing or singing directly at the

capsule from a short distance, or extremely high humidity may cause the

microphone to start crackling or go very quiet due to partial short circuits in

the polarization voltage.

 If you use the microphone in the open, use an optional AKG W4000

windscreen to protect the microphone from moisture and reduce wind

noise.

 Loud instruments: You can use this microphone for close-in recording of

very loud instruments (brass instruments, kick drum, etc.). Just switch the

preattenuation pad in to increase the microphone's capability of handling

sound pressure levels to 155 dB.

 To switch the preattenuation pad in, set the preattenuation switch on

the Remote Control Unit front panel to "-20 dB".

 To switch the preattenuation pad out of circuit, set the preattenuation

switch to "0".

 Low-frequency noise: The supplied spider type shock mount reduces

footfall or other mechanical noise to a minimum.

The switchable bass cut filter at 80 Hz will effectively suppress any

remaining low-frequency noise such as fan noise from air conditioning

systems, etc., or floor vibrations, handling noise, etc. without affecting the

sound of the recorded voice or instrument on tape.

4 Operation

General Hints

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AKG AKGP820 Manuel de service Page 27

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