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IGS Audio ALTER 500, User Manual

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IGS Audio ALTER 500 User Manual Download Page 5

GR BAR

Very fast LED indicator showing the compression level in the
range from 0 to 20dB.

INPUT

Input level and compression depth

OUTPUT

Output level

RATIO

Allows   to   adjust   the   compressor   ratio.   From   1:1   (line   amp),
through 4:1 (compressor) to 20:1 (limiter).

ATTACK

Variable Attack - 3 ranges: 20us, 400us, 800us

RELEASE

Amp recovery time. Range: 50ms, 600ms, 1.1 sec.

SLAM MODE

Allows the enabling of “All-Buttons-On” mode.

COMP IN/OUT

Enable Bypass relay device

OUTPUT

SLAM 
MODE

COMP 

IN/OUT

GR BAR

RATIO

ATTACK

INPUT

RELEASE

Summary of Contents for ALTER 500

Page 1: ...ALTER 500 USER S MANUAL IGS Audio Igor Sobczyk 3 Maja 76d 41 400 Mysłowice Poland e mail igs o2 pl ph 48 601 597 592 www igsaudio com ...

Page 2: ...ld become so exposed TURN OFF the device immediately HEAT ALWAYS site the unit away from sources of heat including direct sunlight and ensure adequate ventilation around the unit Copyright 2014 All rights reserved The information in this document is subject to change without notice IGS Audio makes no warranty of any kind with respect to the material in this document and shall not be liable for err...

Page 3: ...t consumption of the ALTER 500 is rated at 120 miliamperes per slot Please check with the rack manufacturer that the design can meet this rating Mounting WARNING Never plug or unplug any 500 series module with the power supply switched on You may destroy your unit permanently The dimensions of all IGS Audio 500 series modules are compatible with API standard When plugging your new unit to the 500 ...

Page 4: ...st Mid Slow with 3 pole switches The compressor is equipped with a relay bypass achieved on the front panel The input is balanced with a modern low noise op amp and the output with a Carnhill transformer The circuit has two amp stages between which is the output control The stage amps are based on the discreet API2520 circuit The level of gain reduction is shown by a 20 point led bar Typical usage...

Page 5: ...TIO Allows to adjust the compressor ratio From 1 1 line amp through 4 1 compressor to 20 1 limiter ATTACK Variable Attack 3 ranges 20us 400us 800us RELEASE Amp recovery time Range 50ms 600ms 1 1 sec SLAM MODE Allows the enabling of All Buttons On mode COMP IN OUT Enable Bypass relay device OUTPUT SLAM MODE COMP IN OUT GR BAR RATIO ATTACK INPUT RELEASE ...

Page 6: ... Output knob to about 16 6 Set attack to S 7 Set release to S 8 Set Ratio to 4 1 9 Switch Slam off down position 10 Play the sound from your source 11 Turn the Input switch until the compression is satisfying 12 Turn the Output switch until the audio volume is right 13 If you need harder compression set the Ratio to a higher setting 14 To control transients use the Attack switch 15 If you re looki...

Page 7: ...ption 2 5 Watts Shipping weight 0 7kg Dimensions H 13 3cm x W 3 8 cm x D 15 8cm Troubleshooting My unit doesn t light up LED bar is dark Make sure that the signal source is properly connected to the module Adjust the input level using the Input knob insufficient input level might cause that the signal level is below the compressor threshold level Make sure that the COMP IN OUT switch is in IN posi...

Page 8: ...he repair will be billed at a nominal cost The product should be returned in its original package if this is possible or packed in such a way that it is not damaged during the shipment We are not to be held responsible for any damages during the shipment 19 units shall always be packed in a box with support for the rack ears All 500 series modules need to be secured in ESD bag and protected with f...

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