V700
Audio Modules


U789
Stereo Denoiser with level controlled filter for single ended Noise Reduction of Stereo Signals

The U789 Stereo-Denoiser is a single-ended noise reduction systems. Low-level noise can be removed or reduced effectively. The Stereo Denoiser is also useable if the application of a stereo noise gate or stereo expander is not effective or is not possible at all.

The mono version of the stereo denoise is the U788. The mono and stereo versions have the same control elements.

The U789 stereo denoise is available with electronically balanced or transformer balanced inputs and outputs. Inputs and outputs can process levels up to +30dBu. The internally balanced circuit is used for the entire audio chain and the internal Headroom from input to output is also +30 dBu.

The device fades out high frequency disturbances by a voltage controlled filter. The threshold fader with a range from -70 to -30 dB determines the level range of the regulation. If the level falls under the opposed value, the Denoiser cuts the frequency band. The selectable frequency range is between 200Hz and 6kHz. The lower the level drops under the threshold, the more the filter has an effect. The attack is not adjustable and is fixed to a fast value of 0.1 msec. The release is adjustable between 60ms and 1.5 seconds.

An LED chain with 8 diodes shows the momentary frequency attenuation of the filter. The switch DNOISE-ON turns on the unit.

The U789 is a stereo, sinlge-slot V700 standard module that fits into V700 shop wired standard frames.

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Specifications
fits into Standard Frames
open V700 Navigation Page
 
Custom Control Ranges
Custom Color of Fascia and Knobs
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