INTRODUCTION
The Decimator ProRackG guitar noise reduction system defines a new standard for excellence in real time noise reduction performance. The Decimator ProRackG was designed to provide the maximum possible performance in a rack mount dual channel noise reduction system designed specifically for extremely high gain guitar amplifiers. The Decimator ProRackG offers the only system designed with two channels of single ended noise reduction configured for the guitar application allowing one channel to drive the front end of the guitar amplifier and a second channel that tracks in guitar signal directly with the signal processing chain inserted in the effects loop of the amplifier. Now you can quiet down even the most insane amounts of noise with any amplifier system incorporating a series effects loop. The Decimator ProRackG has dual processing channels incorporating both low-level downward expansion and dynamically controlled low-pass filtering in a very easy to use single rack space unit. 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. Not only does the Decimator ProRackG deliver the most stunning noise reduction is also solves the problem of needing to adjust the Threshold setting every time you change gain or switch channels. By using the input guitar signal to drive both channels level detection circuitry the ProRackG needs no other adjustments once the thresholds are set based on the guitar input. This will give you the correct threshold with clean, crunch and even monstrous amounts of gain and if you use pedals you can insert them in the loop between the output of the Decimator Channel 1 and the input of the guitar amplifier. 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.
Please read this manual carefully for a through explanation of the Decimator ProRackG and its functions.
PRECAUTIONS
NOTE: IT IS VERY IMPORTANT THAT YOU READ THIS SECTION TO PROVIDE YEARS OF TROUBLE FREE USE. THIS UNIT REQUIRES CAREFUL HANDELING.
All warnings on this equipment and in the operation instructions should be adhered to and all operating instructions should be followed.
Do not use this equipment near water. Care should be taken so that objects do not fall onto and liquids are not spilled into the unit through any openings.
The power cord should be unplugged from the outlet when the unit is left unused for a long period of time.
DO NOT ATTEMPT TO SERVICE THIS EQUIPMENT. THIS EQUIPMENT SHOULD BE SERVICED BY QUALIFIED SERVICE PERSONNELL ONLY. DO NOT MAKE ANY INTERNAL ADJUSTMENTS OR ADDITIONS TO THIS EQUIPMENT AT ANY TIME. DO NOT TAMPER WITH INTERNAL ELECTRONIC COMPONENTS AT ANY TIME. FAILURE TO FOLLOW THESE INSTRUCTIONS WILL VOID THE WARRANTY OF THIS EQUIPMENT, AND MAY CAUSE A SHOCK HAZZARD.
POWER REQUIREMENTS
This unit accepts power from the 9V AC power adaptor supplied with the unit. This 9V RMS AC voltage is internally processed by a voltage doubler, which generates a bi-polar + and – 15V power supply to maintain the headroom and sound quality of professional, studio quality equipment. Using an external power source minimizes excessive noise and hum problems often associated with internal transformers, providing optimal performance for the user.
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. Turning this control counterclockwise decreases the level at which the dynamic filter opens.
4.CHANNEL IN/OUT SWITCH AND LED
This switch is used to switch each individual channel in or out of the circuit path. When the led is lit, the channel is active.
5.INPUT/OUTPUT REFERENCE LEVEL SWITCH
This switch changes the input and output operating reference level of each individual channel from –10dbu when switched out, to +4dbu when switched in.
6.GAIN REDUCTION METER
This meter indicates the current amount of gain reduction (in decibels) taking place in each channel.
7.CHANNEL THRESHOLD
This is the master threshold for each individual channel. This control is used to adjust the threshold for both the dynamically controlled low pass filter and the low level downward expander. NOTE: Adjusting the Filter Tracking control will shift the sensitivity of the dynamic filter in relation to the sensitivity of the downward expander.
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