iSP Technologies Decimator Prorack Owner's Manual
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iSP Technologies Decimator Prorack Owner's Manual

Guitar noise reduction system
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PRORACK G GUITAR VERSION

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Summary of Contents for iSP Technologies Decimator Prorack

  • Page 1 PRORACK G GUITAR VERSION...
  • Page 2 The Decimator ProRackG is based on ISP Technologies patent pending “Time Vector Processing” which provides the most adaptively dynamic release response characteristics of any real time noise reduction system. The patent pending Time Vector Processing dynamic response circuit is used to control the release time constant of both the downward expander and dynamic filter.

  • Page 3: Front Panel

    FRONT PANEL 1. POWER SWITCH Switches the unit on and off. 2. POWER LED Indicates when the power is on. 3. FILTER TRACKING CONTROL This control adjusts the sensitivity of the filter threshold in relation to the downward expander threshold. Turning this control clockwise increases the level at which the dynamic filter opens.

  • Page 4: Rear Panel

    6. POWER INPUT JACK This jack connector accepts power from the 9V AC adaptor supplied with the unit. DECIMATOR PRORACK G OPERATION *NOTE: Ground Lift switches allow the user to lift the ground between the output signal of channel one of the ProRack G and the input of the selected amplifier, and between each of channel two’s input and output signals that connect to an amplifiers effects loop.
  • Page 5 PRO RACK G STEREO MOD VERSION: 1. LINE INPUT JACK THIS ¼ MONO JACK PROVIDES THE HIGH IMPEDANCE INPUT FOR CONNECTION TO YOUR GUITAR 2. LINE OUTPUT JACK THIS ¼ MONO JACK PROVIDES OUTPUT TO A SELECTED AMPLIFIED SPEAKER SYSTEM THIS VERSION OF THE PRO RACK G IS A CUSTOM VERSION FOR RACK DESIGNERS.
  • Page 6 To maximize the performance of the Decimator, it is necessary to understand both the operation of the controls and the principles of how the internal circuit operates. After this understanding, it will be easier to set up the Decimator ProRack G to suit any application.
  • Page 7 The graph below shows the response of the Expander with a 0db threshold. To set up the Decimator ProRack G for proper operation first determine the reference level of the system that the Decimator will be connected to. Most professional products operate at a +4dbu reference level.

  • Page 8: Specifications

    SETTING THE FILTER TRACKING CONTROL The FILTER TRACKING control adjusts the relationship between the sensitivity of the Dynamic Filter and the Expander. Once the THRESHOLD control is set for proper operation of the downward expander increase the FILTER TRACKING control until the desired dynamic filter operation is achieved.

  • Page 9: Warranty And Service

    In the event that the unit needs to be repaired, please return the unit to ISP Technologies directly. Simply repack the unit, send a copy of the original receipt, a note stating the problem, and send it to: ISP Technologies, LLC 5479 Perry Drive Unit B Waterford, MI 48329 Attn: Repair Dept.

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