Product Description

The Idea

The KU 100 dummy head is a replica of the human head with a microphone built into each ear.

When the recorded audio signal is reproduced through high-quality headphones the listener perceives a sound image almost identical to the one he would have heard at the recording location of the dummy head (head-related stereophony).

When played back through loudspeakers, the sound matches to a high degree that of conventional stereo microphones, placed in the same position. However, a superior quality is added, that of a distinct spatial depth perception.

The KU 100 dummy head is just as easy to use during creative radio drama productions, and music recordings where the room acoustics should be recorded at the same time.

The dummy head is also contributed essentially as an important tool to preserve natural sounds of all kinds. In addition, the dummy head is frequently used to examine and document the influence of noise in industrial applications at various working places under realistic conditions.

Electrical Features

The KU 100 uses transformerless circuitry with the advantage of high output capability, fast transient response, and extremely low self noise. The usual output transformers are replaced by electronic circuits. As with traditional transformers, this technique ensures good common mode rejection, and prevents RF interference, that may influence the balanced audio signals.

The dummy head provides balanced (XLR) and unbalanced (BNC) outputs. It can be powered in three different modes:

From an external P 48 phantom power supply

With batteries as part of the internal battery supply

From an external AC mains supply (included with the system)

 
Filter and Attenuation

A 10 dB switch inside the head attenuates the sensitivity. A second switch selects the cutoff frequency of the high-pass filter to be either linear, 40 Hz, or 150 Hz.

Delivery Range

The KU 100 comes in a robust aluminum carrying case, together with an external power supply unit, a 5-pin XLR cable, and an adapter cable that splits the 5-pin XLR output into two 3-pin XLR connectors.

Features:

Dummy head for head-related stereophony

Pressure transducer with flat diffuse-field frequency response

Loudspeaker compatible

Transformerless circuitry

Two-stage switchable low frequency roll-off

Switchable 10 dB preattenuation

Balanced and unbalanced outputs (XLR and BNC)

 
Specifications:

Acoustical Operating Principle: Pressure transducer

Directional Pattern: Ear

Frequency Range: 20 Hz … 20 kHz

Sensitivity at 1 kHz into 1 kohm: 20 mV/Pa

Rated Impedance: 50 ohms balanced, 200 ohms unbalanced

Rated Load Impedance: 1000 ohms

Equivalent SPL CCIR 468-3: 29 dB

Equivalent SPL DIN/IEC 651: 16 dB-A

S/N Ratio CCIR 468-3: 65 dB

S/N Ratio DIN/IEC 651: 78 dB

Maximum SPL for THD 0.5%: 135 dB

Maximum SPL for THD 0.5% with preattanuation: 145 dB

Maximum Output Voltage: 1950 mV

Dynamic Range of the Microphone Amplifier DIN/IEC 651: 119 dB

Supply Voltage: 200 … 240 V / 48 V ± 4 V / 6 x 1,5 V

Current Consumption: 2 x 2 mA, P 48

Matching Connector: 3-pin XLR-F / 5-pin XLR-F

Weight: 3500 g

Height: 280 mm

Width: 180 mm

Depth: 220 mm