4 Using the Microphone

Using vacuum-tube electronics and a large-diaphragm transducer, the PERCEPTION 820

4.1 Introduction

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.

 

 

• Refer to fig. 4. Whichever polar pattern you select, it may be good to know which way

4.2 General Hints

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 PF 80 pop screen from AKG between the micro- phone 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 crack- ling 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 W 4000 windscreen to pro- tect the microphone from moisture and reduce wind noise.

•Loud instruments: You can use this microphone for close-in recording of very loud in- struments (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 me- chanical noise to a minimum.

The switchable bass cut filter at 80 Hz will effectively suppress any remaining low-fre- quency 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

Fig. 4: Microphone front.

tape.

 

 

- To switch the filter in, set the bass cut filter switch on the Remote Control Unit front

 

panel to the “

“ position.

 

- To switch the filter out of circuit, set the bass cut filter switch on the Remote Con- trol Unit front panel to the “—“ position.

PERCEPTION 820 TUBE

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AKG Acoustics 820 manual Using the Microphone, Introduction, General Hints, Tape
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820 specifications

The AKG Acoustics 820 is a professional studio headphone that offers a blend of comfort, durability, and exceptional sound quality, making it an ideal choice for both audio engineers and musicians. Renowned for its ability to deliver accurate audio reproduction, the K820 is designed for serious listening, mixing, and recording sessions.

One of the key features of the AKG K820 is its high-performance drivers, which provide a wide frequency response, ranging from deep bass to crisp highs. This high fidelity makes it suitable for various applications, including critical listening in studios or casual listening at home. The headphones feature an open-back design, which enhances the soundstage and provides a more natural and immersive listening experience. This design reduces the feeling of isolation, allowing users to remain aware of their surroundings without compromising audio enjoyment.

Comfort is paramount when it comes to long recording or mixing sessions, and the K820 excels in this aspect. The headphones are equipped with plush ear pads and an adjustable headband that ensures a snug yet comfortable fit. This ergonomic design minimizes fatigue, enabling users to wear them for extended periods without discomfort.

Another significant characteristic is the headphone’s lightweight construction, which contributes to long-term wearability. Despite being lightweight, the K820 is built with robust materials designed to withstand the rigors of professional use. The headphones also come with a detachable cable, which not only enhances portability but also allows for easy replacement in case of damage.

The AKG Acoustics 820 headphones have a nominal impedance that makes them compatible with a wide range of devices, from professional audio interfaces to portable music players. The headphones also feature a high sensitivity rating, ensuring that they can produce loud sound levels without distortion, even when powered by lower-output devices.

In terms of aesthetics, the K820 sports a sleek and modern design, appealing to professionals and casual users alike. The matte finish and streamlined silhouette give an elegant touch, aligning with AKG’s reputation for high-quality audio products.

In summary, the AKG Acoustics 820 headphones combine advanced technologies, high comfort levels, and exceptional sound quality, making them a top choice for anyone serious about audio. Their robust build, ergonomic design, and superior audio performance position them as a reliable tool in any sound professional's arsenal.
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