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iSP Technologies Decimator Prorack Owner's Manual

Noise reduction system
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Summary of Contents for iSP Technologies Decimator Prorack

  • Page 2 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. Please read this manual carefully for a through explanation of the Decimator ProRack and its functions.

  • 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

    REAR PANEL 1. CHANNEL 1 INPUT JACK This ¼ inch mono jack provides the high impedance input for connection to your audio device. 2. CHANNEL 1 OUTPUT JACK This ¼ inch mono jack provides the unbalanced output signal for channel 1. 3.
  • Page 5 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 to suit any application.
  • Page 6 The graph below shows the response of the Expander with a 0db threshold. To set up the Decimator ProRack 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. Music equipment typically operates at –10dbu.

  • Page 7: 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 8 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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