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5

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Front Panel

OUTPUT CONTROL

This center-detented knob controls the output level. The center detent indicates unity gain. Provided,
the Tube Gain control is in the center detent position as well. The output level can be adjusted to
provide make-up gain when the compressor is active, or reduce the output level fed to a device that
will only accept -10 dBV signals. You would also reduce the output level to retain unity levels when
increasing the vacuum tube saturation with the TUBE GAIN control. In either case, you should
switch back and forth between Bypass and Active to ensure level unity.

Note: If the Stereo Link 1>2 switch is In, the Output controls for Channel 1 and 2 remain
independent. The Tube Gain control for Channel 1 controls Tube Gain for both channels.

CLIP LED

The Clip LED is a fast-acting indicator to warn you of quick transient peaks that can cause audible
output distortion. The Clip LED will light when the signal is 3 dB below the onset of clipping.
Critical points in the audio path are monitored so that clipping cannot occur in any one stage.

TUBE GAIN CONTROL

This control determines the amount of gain the tube amplifier will apply to the input signal. Unity
gain for a signal passing through the VCS-1 is achieved when this and the OUTPUT control are at
the center detent position. As you increase the TUBE GAIN you will increase the amount of tube
saturation that, in moderate amounts, enhances pleasant even order harmonics but in greater
amounts, can cause audible distortion. If you have the TUBE GAIN control set to a level causing
tube saturation, you should lower the OUTPUT level so you don’t overdrive the outputs.

VU METER 

The VU Meter can be used to indicate input level, output level and the amount of gain reduction.
The following shows how each display mode is selected.

Содержание VCS1

Страница 1: ......

Страница 2: ...ide reasonable protection against harmful interference in a res idential installation This equipment generates uses and can radiate radio fre quency energy and if not installed and used in accordance...

Страница 3: ...Front Panel 5 Output Control 5 Clip LED 5 Tube Gain Control 5 VU Meter 5 Trim Adjustment 6 Gate Threshold Attenuation 6 De ess Control 6 Peak Limiter 7 Compressor Controls 7 Meter Function Switch 8 Au...

Страница 4: ...upply to maximize signal to noise performance and transient response The premium grade 12AX7A vacuum tubes used in the VTP 1 are manufactured in Russia and hand tested and graded specifically for the...

Страница 5: ...Connection Examples The following diagrams show a few ways in which the VCS 1 can be used 2...

Страница 6: ...e jacks to be used if balancing is desired The 1 4 TRS inputs can also be used with an unbalanced source using a standard two conductor cable Plugging a 1 4 connector into the phone jack input will ov...

Страница 7: ...LINE OUTPUT This output is servo balanced producing 4 nominal level to XLR and 1 4 TRS connectors Unbalanced cables may be used also 4...

Страница 8: ...ing indicator to warn you of quick transient peaks that can cause audible output distortion The Clip LED will light when the signal is 3 dB below the onset of clipping Critical points in the audio pat...

Страница 9: ...termines the level at which the noise gate closes Turning the control clockwise raises the threshold at which the gate will open For example if you have set the threshold to 20 dBu only signals louder...

Страница 10: ...RATIO This control varies the amount of squeeze you need for the audio material that exceeds your threshold setting Turning the control clockwise from the 1 1 off position increases the ratio from ge...

Страница 11: ...shold the Soft Knee setting will initiate a more gentle transition to com pression from just below the threshold This results in more natural sound even with higher ratios and attack times The Hard kn...

Страница 12: ...t distort and low level notes that disappear in the mix Switch in the Auto setting and start with a ratio of 4 1 Auto is best for reducing release time chattering on sustained bass notes but you can s...

Страница 13: ...S 1 s 4 5 kHz you can connect an equalizer into the Sidechain In this way you can experiment with the opti mum frequency by boosting individual frequencies until you find the correct one Because sibil...

Страница 14: ...ed from the Sidechain Return works also Understanding VU Meter and Clip LED Readings The functions of the VU Meter and Clip LED combine to give an excellent indication of average and peak levels The b...

Страница 15: ...12...

Страница 16: ...tip hot Output Impedance 100 Nominal Output Level balanced or unbalanced 4 dBu Maximum Output Level balanced or unbalanced 21 dBu Side Chain Send Connector 1 4 TRS tip hot Type Impedance balanced Impe...

Страница 17: ...pass 3 dB 4 5 kHz Vacuum Tube Circuit Type Class A high voltage parallel triode design Tube Complement Single 12AX7A per channel Saturation User variable Power Requirements Operating Voltage 120 V AC...

Страница 18: ...15 DIGITECH VCS 1 SIGNAL FLOW DIAGRAM One Channel Only...

Страница 19: ...Printed in the USA 18 2202 A...

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