Networked Audiomixer: Difference between revisions

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Dreamer suggested this circuit ; <s>https://www.cgs.synth.net/modules/cgs33_matrix_mixer_euro.html</s> [https://web.archive.org/web/20180211035130/https://www.cgs.synth.net/modules/cgs33_matrix_mixer_euro.html *archive*]
Dreamer suggested this circuit ; <s>https://www.cgs.synth.net/modules/cgs33_matrix_mixer_euro.html</s> [https://web.archive.org/web/20180211035130/https://www.cgs.synth.net/modules/cgs33_matrix_mixer_euro.html *archive*]


This shows a mono 4 to 1 summing mixer, which would be adequate.
This shows a mono 4 to 1 summing mixer, which would be adequate. As i have 12 digipots in home, not 16, i'll adjust it to 3 to 1.


Idea will end up with 2x the input (buffer) circuit, and 4x the output (mixing) circuit
My idea is to end up with 2x the input (buffer) circuit, and 4x the output (mixing) circuit, so i end up with a 3x2 matrix mixer.
 
== Components ==
 
* 2x Input boards 'row board'
* 4x Output boards 'column board'
* Power Supply
* Input and output connectors
* SBC part to operate the digipots, and receive the second stereo output


== Stuff to get ==
== Stuff to get ==


* 16 digital potentiometers  , possible model X9C104
=== Input boards ===
* 8 'buffer' opamps  , possible NE5532
This gets 3x mono inputs.
* 8 output opamps  , ??
'''Resistors'''
* ferrite beads , ???
* 3x 100k
* 3x 1k
'''Capacitors'''
* 2x 10uF 25V
* 2x 100nF
'''Opamps'''
* 3x TL071 , or 1x TL074
'''Huh'''
* 2x Ferrite beads
 
=== Output boards ===
This gets 3x mono outputs.
'''Resistors'''
* 6x 100k
* 1x 220R
'''Capacitors'''
* 2x 47pF
* 2x 100nF
'''Opamps'''
* 2x TL071 , or 1x TL072 (or as i need 4x these output boards, 1x TL074 and share half to second output board)
 
 
=== Others ====
* connectors , ???
* connectors , ???
* some powersupply? (this circuit needs -15, 0 and +15V) , maybe [https://www.eijlander.nl/rt65b-geschakelde-voeding-64w-triple-output-5-12-12v-8-0-3-5-1-0a-a-475570-4419.html this meanwell]
* some powersupply? (this circuit needs -15, 0 and +15V) , maybe [https://www.eijlander.nl/rt65b-geschakelde-voeding-64w-triple-output-5-12-12v-8-0-3-5-1-0a-a-475570-4419.html this meanwell]
* passives : 36x 100k ohm , 8x 1k ohm , 4x 220 ohm, 12x 100nF , 8x 47pF, 4x 10uF


* some kinda case?
* some kinda case?
* some SBC with line-in and network (and storage?) :)
* some SBC with line-in and network (and storage?) :)

Revision as of 08:00, 5 November 2019

Networked Audiomixer
NoPicture.png
Participants User:buzz
Skills Electronics
Status Planning
Niche Electronics
Purpose Infra
Tool No
Location
Cost
Tool category

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What

We've had experience with hardware like this through the Nexia_PM, but thats a very expensive device.

This project aims to make a simple 4x in 1x out (or maybe 2x out) stereo mixer that is controllable over network -only-.

How

Dreamer suggested this circuit ; https://www.cgs.synth.net/modules/cgs33_matrix_mixer_euro.html *archive*

This shows a mono 4 to 1 summing mixer, which would be adequate. As i have 12 digipots in home, not 16, i'll adjust it to 3 to 1.

My idea is to end up with 2x the input (buffer) circuit, and 4x the output (mixing) circuit, so i end up with a 3x2 matrix mixer.

Components

  • 2x Input boards 'row board'
  • 4x Output boards 'column board'
  • Power Supply
  • Input and output connectors
  • SBC part to operate the digipots, and receive the second stereo output

Stuff to get

Input boards

This gets 3x mono inputs. Resistors

  • 3x 100k
  • 3x 1k

Capacitors

  • 2x 10uF 25V
  • 2x 100nF

Opamps

  • 3x TL071 , or 1x TL074

Huh

  • 2x Ferrite beads

Output boards

This gets 3x mono outputs. Resistors

  • 6x 100k
  • 1x 220R

Capacitors

  • 2x 47pF
  • 2x 100nF

Opamps

  • 2x TL071 , or 1x TL072 (or as i need 4x these output boards, 1x TL074 and share half to second output board)


Others =

  • connectors , ???
  • some powersupply? (this circuit needs -15, 0 and +15V) , maybe this meanwell
  • some kinda case?
  • some SBC with line-in and network (and storage?) :)