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04. OVERVIEW

ATN8 is an eight channel attenuator with inverting, mix-
ing  and  offset  capabilities.  The  8  channels  are  laid  out 
horizontally, each with a switch to change between uni-
polar and bipolar modes, a status LED that reflects what’s 
happening on the output (green is positive voltage, red is 
negative), an input and an output jack. The outputs are 
normalized for each subsequent channel so that it can be 
used for offset or mixing.

When there’s no patch cable present on an input, it’s nor-
malized to a fixed voltage selected on the top by the two 
switches either to +5V or +10V.

Summary of Contents for ATN8

Page 1: ...ANTUMBRA ATN8 MANUAL ...

Page 2: ...TABLE OF CONTENTS 01 INSTALLATION 4 02 JACK LIGHTS 5 03 FRONT 6 04 OVERVIEW 7 05 ATTENUATORS 8 06 MIXING 9 07 OFFSET 10 ...

Page 3: ...00 THANK YOU Thank you for purchasing the Antumbra ATN8 module In this documentation you can find information about the installation and use of the module ...

Page 4: ...y doing otherwise you can potentially harm the module or even your whole system Power off your Eurorack system and connect the other end of the cable to the power source here also pay attention to the PSU manufacturer s instructions TL074 TL074 TL074 TL074 TL074 TL074 TL074 TL074 TL074 TL074 181 181 181 181 102 102 102 102 102 102 102 102 102 102 102 102 102 102 102 102 103 104 104 104 104 104 104...

Page 5: ...umper TL074 TL074 TL074 TL074 TL074 TL074 TL074 TL074 TL074 TL074 181 181 181 181 102 102 102 102 102 102 102 102 102 102 102 102 102 102 102 102 103 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 ...

Page 6: ... for channels 5 8 2 Voltage switch for channels 1 4 3 Status LED for the channel 4 Unipolar Bipolar switch for each channel 5 Attenuator for each channel 6 Input for each channel 12V 7 Output for each channel 12V 5 2 1 6 7 4 3 ...

Page 7: ...d bipolar modes a status LED that reflects what s happening on the output green is positive voltage red is negative an input and an output jack The outputs are normalized for each subsequent channel so that it can be used for offset or mixing When there s no patch cable present on an input it s nor malized to a fixed voltage selected on the top by the two switches either to 5V or 10V ...

Page 8: ...the potenti ometer goes the full range fully counter clockwise the output is 0V fully clockwise it matches the input level In bipolar mode 0V is at 12 o clock turning the potenti ometer clockwise it increases the output level Turning it counter clockwise from 12 it inverts and increases the level UNIPOLAR BIPOLAR ...

Page 9: ...k that you patch in will contain the mix of all the previous channels level set by the attenuators A patch cable in the output jack breaks the normalization and on the next channel you can start a new mixing chain INPUT 1 INPUT 1 INPUT 1 INPUT 2 INPUT 2 INPUT 2 INPUT 3 INPUT 3 MIX OF CH 1 3 MIX OF CH 4 5 MIX OF CH 6 8 ...

Page 10: ...s for the preset voltage each set independently by their corresponding switches The groups are marked by an outlined and a filled circle above the input jacks and next to the switch es If a channel is set to bipolar mode the output will be 5V or 10V Combining offset with mixing you can offset an incoming signal with an input left unpatched GROUP A GROUP B A B INPUT 1 INPUT 1 WITH OFFSET ...

Page 11: ...ATN8 is designed by David Szebenyi under Antumbra www antumbra eu Manual by David Szebenyi www aman hu 2021 All rights reserved ...

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