Duuuuude I loved your explanation. I have subscribed. That panel drilling process made me a little anxious though. Drill out your mounting holes first, then screw the panel down to some spare wood stock. it'll save all that warping and shuffling about. Also, you can use another block of wood to apply even pressure to the parts of the panel you're not drilling, not only saving the piece but saving your hands. Looking forward to seeing more!
Nice build. I hate using steel sheet as it leaves so many sharp edges, you take care while drilling! I bought a 2m length of Aluminium sheet 25mm wide for £10 which should give me about 14 front panels and no sharp edges. I have also 3D Printed front panels but the PLA material gets brittle after a year. Great video keep building modules :)
6:39 I've been considering building a mixer using TL084 op amps as in your circuit. I believe they are quite similar to the TL072 you're using. I was considering using an op amp for each channel as I was concerned that gain level would be affect adjacent channels when adjusting the input level. Say for instance the volume on channels 1, 2 & 3 were at zero,. wouldn't that effect the volume on channel 4 with your current circuit as the resulting value of R1,2 & 3 would be between 25K and 33K relative to GND on the audio bus based on channel 4's volume level. Using individual op amps on each channel would eliminate this problem - if in fact it is a problem. What is your experience so far? I know that a lot of budget audio mixers are designed this way to save cost having one op amp doing all the work rather than each channel having it's own op amp feeding the audio bus and a final op amp at the output where you would have the master volume level potentiometer for a total of 5 op amps. Does adjusting the volume on one channel effect the level on adjacent channels in this configuration? Thx
The channels do not affect eachother in this circuit. Because the opamp always keeps it's inverting input (pin 2) at 0V, the sources connected to that point have no effect on eachother.
Hey there, great video thank you very much for it. If I wanted to build this schematic for a stereo mixer, what I just double it and tie grounds together, using dual potentiometers for volume control? I'm not missing something am I? Thanks again for the great video, I'm going to get to work on making one this weekend!
The opamp needs to be powered from a bipolar power supply. You can see the full schematic on my website linked in the description. Since my synthesizer is eurorack, I use a ±12V supply but the circuit will work with anything from ±5V to ±18V If you want to build your own bipolar power supply here are 2 great videos on the subject you should check out: ruclips.net/video/pQKN30Mzi2g/видео.html ruclips.net/video/PrsVqHar4u0/видео.html
Nice explanation of a simple but functional circuit. The build made me a bit edgy - I hope you won't mind me saying but I think you should be feeding a little more solder and then keeping the iron on the work until it has completely flowed throughout. Then remove the iron smartly. You were kinda dabbing at them a bit. I guess you won't be throwing them at the wall but it still makes me anxious lol. I subscribed though because the circuits look good and you explain them well.
Duuuuude I loved your explanation. I have subscribed. That panel drilling process made me a little anxious though. Drill out your mounting holes first, then screw the panel down to some spare wood stock. it'll save all that warping and shuffling about. Also, you can use another block of wood to apply even pressure to the parts of the panel you're not drilling, not only saving the piece but saving your hands. Looking forward to seeing more!
This is precisely why eurorack is a great thing to be a part of. Well done sir 💪👏👏👏😂🤣🥰💋👌😃
Gloves help prevent sliced hands.
The explanation and details you provide in this video are absolute gold thank you for making and all your help ❤
I wish I could build something like that! The mixing console of my dreams came true.
Nice build. I hate using steel sheet as it leaves so many sharp edges, you take care while drilling! I bought a 2m length of Aluminium sheet 25mm wide for £10 which should give me about 14 front panels and no sharp edges. I have also 3D Printed front panels but the PLA material gets brittle after a year. Great video keep building modules :)
Do you have any experience with ABS panels? I've been thinking about making a few.
Great video, thanks for the clear explanation.
Nice build and a great introduction to audio electronics :)
your vid have helped and taught me alot. Thanks you
6:39 I've been considering building a mixer using TL084 op amps as in your circuit. I believe they are quite similar to the TL072 you're using.
I was considering using an op amp for each channel as I was concerned that gain level would be affect adjacent channels when adjusting the input level.
Say for instance the volume on channels 1, 2 & 3 were at zero,. wouldn't that effect the volume on channel 4 with your current circuit as the resulting value of R1,2 & 3 would be between 25K and 33K relative to GND on the audio bus based on channel 4's volume level.
Using individual op amps on each channel would eliminate this problem - if in fact it is a problem.
What is your experience so far?
I know that a lot of budget audio mixers are designed this way to save cost having one op amp doing all the work rather than each channel having it's own op amp feeding the audio bus and a final op amp at the output where you would have the master volume level potentiometer for a total of 5 op amps.
Does adjusting the volume on one channel effect the level on adjacent channels in this configuration?
Thx
The channels do not affect eachother in this circuit. Because the opamp always keeps it's inverting input (pin 2) at 0V, the sources connected to that point have no effect on eachother.
really informative, thanks for sharing!
Thanks, i finally learnt how op amps work!
I love this video.
Hey there, great video thank you very much for it. If I wanted to build this schematic for a stereo mixer, what I just double it and tie grounds together, using dual potentiometers for volume control? I'm not missing something am I? Thanks again for the great video, I'm going to get to work on making one this weekend!
Yes that should work nicely
nice build man.
you da best
I think no.1 D Y I👌👌👌👍
Very helpful video, thanks! Could you share the KiCad files and the types of components you used?
You can now download all the files here: sandelinos.me/diy/Simple-Mixer/
amazing thanks!@@SandelinosDIY
Please how do I add a microphone?
I would like to ask you all a question,How do i build a audio spliter 1 input 4 out puts . I have 4 amps amd i think im getting somthing wrong.
Please does the ICs need to be powered ?
The opamp needs to be powered from a bipolar power supply. You can see the full schematic on my website linked in the description. Since my synthesizer is eurorack, I use a ±12V supply but the circuit will work with anything from ±5V to ±18V
If you want to build your own bipolar power supply here are 2 great videos on the subject you should check out:
ruclips.net/video/pQKN30Mzi2g/видео.html
ruclips.net/video/PrsVqHar4u0/видео.html
What is the ic used for this board
I used a TL072 but pretty much any dual op-amp will work.
what program are u using to make this schematic?
I think its KiCad
Nice explanation of a simple but functional circuit. The build made me a bit edgy - I hope you won't mind me saying but I think you should be feeding a little more solder and then keeping the iron on the work until it has completely flowed throughout. Then remove the iron smartly. You were kinda dabbing at them a bit. I guess you won't be throwing them at the wall but it still makes me anxious lol.
I subscribed though because the circuits look good and you explain them well.