Description, Specifications | AKG Acoustics C 4000B instruction

C 4000B

Description

The C 4000 B was engineered from the ground up to take advantage of developments in low noise surface mount circuitry and electret technology to produce a microphone with an astounding dynamic range of 137 dB. The microphone’s noise floor is a low value of 8 dB-A, and it reaches a reference value of 0.5% THD at a level of 145 dB.

The capsule assembly has been internally shock mounted, and the grid/screen structure is 0.2 inch (3 mm) thick to reduce wind and breath “pops” with minimal effect on high frequency performance. The diaphragm assembly is the industry’s first back plate electret dual 1 inch (25 mm) diameter design, and it reflects recent developments in electret technology that assure both long-term stability and very high equivalent dc voltage biasing.

The C 4000 B reflects AKG’s customary attention to subtleties of frequency response: the transformerless output gives rock solid low frequency performance, and the 6 micron thick gold-sputtered diaphragms provide extended high frequency performance. Switchable 10-dB padding extends the operating range even more, and a 12-dB/octave low cut at 100 Hz removes rumble or excessive proximity effect.

While the C 4000 B is primarily intended for studio use, it will be equally at home in broadcast operations or on stage for vocal applications of the highest quality. Polar patterns are omnidirectional, cardioid, and hypercardioid.

Specifications

Transducer type: Dual diaphragm, 1 in. (25 mm) diameter pressure gradient

Condenser Microphone

H 100

Diaphragm material: Gold-sputtered mylar foil

Frequency response: 20 Hz - 20 kHz

Polar patterns : Omnidirectional, cardioid and hypercardioid

Impedance:

Less than 200 ohms

Recommended load impedance: Greater than 1000 ohms

Output connector: XLR (pin 2 positive, per IEC standard)

Sensitivity at 1 kHz: 25 mV/Pa; -32 dB (dB re 1 V/Pa)

Equivalent noise level (A-weighted): 8 dB (DIN 45412)

Sound pressure level for 0.5% THD (0/-10 dB):

145/155 dB SPL (350/1000 Pa)

Dynamic Range:

137 dB

S/N ratio re 1 Pa (A-weighted): 86 dB

Features

•Noise floor of 8 dB(A) and maximum level capability of 145 dB

•Uses the first 1-inch dual diaphragm electret capsule in the industry

•Three selectable polar patterns (omni, cardioid and hypercardioid)

Environment:

Temperature: 14° F to 140° F (-10° C to +60° C)

Relative humidity: 90% (-20° C),85% (+60° C)

Pre-attenuation switch: -10 dB

Low frequency roll-off:12 dB/octave below 100 Hz

Power requirement: 9 to 52 V phantom power

Current consumption: less than 2 mA

Microphone size: 2.2 in. (58 mm dia), 7.2 in. long (183 mm)

Microphone net weight:16 oz. (0.45 kg)

Standard accessories: H 100 Elastic suspension W 4000 Foam windscreen

•Operates with phantom powering from 9-52 volts

•Integrated wind and pop screen, plus internal shock mounting, for lowest environmental noise performance

C 4000B specifications

The AKG Acoustics C 4000B is a sophisticated large-diaphragm condenser microphone, recognized for its exceptional versatility and sound quality. It is a popular choice among musicians, sound engineers, and recording studios, widely appreciated for its ability to handle a variety of sound sources with transparency and warmth.

One of the main features of the C 4000B is its multi-pattern capability, allowing users to switch between cardioid, omnidirectional, and figure-8 polar patterns. This flexibility makes it suitable for a range of applications, from solo vocal recordings to capturing ensemble performances. The ability to modify the pickup pattern enables the microphone to excel in various environments, adapting to different acoustic conditions and recording setups.

The microphone boasts a frequency response of 20 Hz to 20 kHz, ensuring it can capture both the deepest lows and the finest highs. This wide frequency range is particularly beneficial for nuanced applications such as vocals, acoustic instruments, and room ambiance. The C 4000B also includes an internal pop filter, which helps mitigate plosive sounds, enhancing the clarity of recordings.

Equipped with a high SPL handling of up to 150 dB, the C 4000B can easily capture loud sound sources, making it a reliable choice for miking guitar amplifiers, brass instruments, and drums. The microphone's low self-noise level ensures that it delivers pristine sound quality, crucial for professional recordings where interference needs to be minimized.

The build quality of the C 4000B reflects AKG’s commitment to durability and performance. The microphone features a robust metal housing that can withstand the rigors of both studio and live environments. This durability is complemented by a shock mount that reduces vibrations and handling noise, further contributing to the microphone’s overall performance.

In terms of technology, the AKG C 4000B utilizes a dual-diaphragm design that enhances the microphone's sensitivity and transient response. This design allows for a more dynamic and accurate representation of the sound source, providing an open and airy quality that is highly sought after in studio recordings.

Overall, the AKG Acoustics C 4000B is a well-engineered microphone that combines versatility, build quality, and superior sound performance, making it an essential tool for professionals and enthusiasts alike. Whether used in a studio or a live setting, the C 4000B stands out as an exceptional choice for capturing sound with precision and clarity.