A full-featured universal noise-gate that allows absolute control over all functions, with high-pass/low-pass and band-pass filters for the Side-Chain. The U762 is the mono version, and the U763 the stereo version of the device.
The U762/U763 universal noise-Gate has balanced and floating inputs and outputs. All inputs and outputs can process levels up to +30dBu in the frequency range. The look-ahead rule circuit of the device is VCA controlled for fast, linear operation. A symmetric circuit is used for the entire audio chain and the internal Headroom from input to output is +30dBu.
Features:
*Infinitely variable Threshold, attack and release controls with wide ranges
*Precision RMS converters
*Adjustable Hold control
*Adjustable Range control
*Adjustable and selectable High-pass and Low-pass filters with range multipliers
*Adjustable and selectable band-pass filter
*Look ahead operation for very fast linear operation
*External Key input
*10 Segment LED gain reduction meter with 80dB range
The operating condition of the gate is indicated by three light-emitting diodes OPEN, HOLD and CLOSED.
The high-pass, low-pass and band-pass filters can be switched before the electric rectifier.
The high-pass and low-pass filters have a slope of 12dB/octave, the low-pass ranges from <20Hz to 300Hz, and the high-pass ranges from > 20kHz to 2kHz. Both ranges can be extended by the switches x10 and x0.1 around the factor 10; this increases the high pass range down to 3kHz and increases the low-pass range up to 200Hz.
In contrast to high-pass and low-pass filters the band-pass filter with Q control selects an adjustable center frequency. The band-pass filter has a range of 60Hz to 12kHz and the Q factor is 2 octaves. With the band-pass filter the gate can be tuned to an extremely narrow frequency band for more precise triggering.
The LISTS TO SIDE-CHAIN control allows you to monitor the side-chain, when this switch is pressed; the input of the electric rectifier is put on the output of the device. The Key input allows the possible control of the gate by an external audio signal.
The stereo-version of the universal noise-gate is technically identical, except that it has a full stereo circuit. The control of the expander takes place, in this configuration, by separated electric rectifiers always from the channel that supplies the higher level. The Key input of the right channel is on output socket 3.
The U762 / U763 universal Noise-Gate modules are standard V700 modules and fit into standard mounting frames
