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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.   

 
 
 
 

 

 

Summary of Contents for Decimator Prorack

Page 1: ......

Page 2: ...EQUIRES 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 C...

Page 3: ...uit 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 s...

Page 4: ...annel 1 3 CHANNEL 2 INPUT JACK This inch mono jack provides a balanced input for the audio path channel 2 4 CHANNEL 2 OUTPUT JACK This inch mono jack provides the unbalanced output signal for channel...

Page 5: ...one by use of a high quality voltage controlled sliding filter A frequency sensitive audio level detection circuit incorporating ISP Technologies patent pending Time Vector Processing circuit controls...

Page 6: ...ponse 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 professio...

Page 7: ...a point just above the highest input frequency The instant the input signal contains a high frequency audio signal the bandwidth of the filter will open so as to allow the highs to pass unaltered Sinc...

Page 8: ...nd send it to ISP Technologies LLC 5479 Perry Drive Unit B Waterford MI 48329 Attn Repair Dept All shipping charges must be fully prepaid ISP will not be responsible for any damages incurred in shippi...

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