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Custom Build Mixing Console
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Old 20th March 2019, 12:38 AM   #1
Vintage Audio Projec is offline Vintage Audio Projec
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Default Custom Build Mixing Console

Hi guys,

As I always dreamed about building my own custom mixing desk we decided to start building one. I know it's more oriented to studio etc but here it goes. We started this around a year ago. For the basic preamp we use the neve 1084 design. We like the sound of this preamp and have good experience with building this preamp. We then devised a way to make Inline modules based on the 1084 and also added a balanced insert point. There is ofcourse a lot more to it then this.

The power supply is 3phase Full wave rectification. This way it will have low ripple and the buffer capacitors will have an easy life and will last long. A neve 1084/1073 wants a good power supply. The concept of this console is also to build something that will last and if something happens the session can continue and it can easily be fixed. The raw rectified power supply is then split up in 4 seperate lines. In the console are the smaller power supplies using lm317/lm337. there is one small power supply for each pair of channels. So if something fails the rest will keep on going.

Then the VU meters are set to 8dbu=0VU. Normally this should be 4dbu = 0VU but for some reason today's engineer like to record quite hot.....don't know why you would do that when you have 24bit adc....... but ok. Doing this we avoid that the meters are continuously pegged to the right....

So now some pictures:

first things first and we started out with a small frame prototyping. Click the image to open in full size.

After this was tested and checked, the work started on the frame.

Click the image to open in full size.

And after some more work: Click the image to open in full size.

the work also started on the soldering some PCB's....

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Click the image to open in full size.

Elma Switches for the gain switch Click the image to open in full size.

P&G faders



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after the channelfronts have arrived: Click the image to open in full size.

after the Faderpanels have arrived: Click the image to open in full size.

The inside of 1 channel module:

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the power supply build: Click the image to open in full size.

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Last update untill now. Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

I have more photo's but this will do for now. I will add more as progress goes.
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Old 20th March 2019, 08:07 AM   #2
tmuikku is offline tmuikku  Finland
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Holy cow, tremendous amount of work there! Looks very professional and I bet sounds too. Have you posted this to groupdiy.com?
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Old 20th March 2019, 09:31 AM   #3
JMFahey is offline JMFahey  Argentina
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Impressive.
Congratulations.

The sound lies in the Electronics but the BIG bottleneck for the small builder lies in the "mechanicals" , and you did that brilliantly.
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Design/make/service musical stuff in Buenos Aires, Argentina, since 1969.
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Old 20th March 2019, 09:56 AM   #4
avtech23 is offline avtech23  Australia
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Join Date: Dec 2017
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Custom Build Mixing Console
Wow
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The ever growing project list.. :NAP140 Clone, NAD 3020i & 3225PE, JLH1969, TDA2050, Fender 5F2A Princeton, NE5532 Pre, SHPA, B1 Korg, T2. : VSQC Phunk Style, Retro 50W, Filmosound 601, LM4780. : Apex AX-14, TGM-10, TDA7265 (Last in line)...maybe
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Old 20th March 2019, 10:36 AM   #5
bob4 is offline bob4  Finland
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Deeeeeeeep pockets!!
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Old 20th March 2019, 01:18 PM   #6
turk 182 is offline turk 182  Canada
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way cool!
and no Vector pak style connector to deal with very nice!
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Old 20th March 2019, 07:29 PM   #7
Vintage Audio Projec is offline Vintage Audio Projec
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Thanks for the compliments guys.

The frontpanels where done by schaeffer. Al the rest of the metalwork we did ourselves (even the channel module cases) The channels are based on the 19" standard.

Altough it is indeed expensive to build, if you look at what is available it's not that bad... especially if you look at the components we use. For Electrolytic caps We use Panasonic FC series. Very decent and not to expensive.

EQ caps are Wima except a few small values where we use silver mica. Pushbuttons are C&K switches Gain switch is Elma. EQ concentric switches and pots are Blore Ed. Solo/Mute/monitor buttons are EAO (these are expensive)

The thing is if you just want a mixing desk for hobby projects it would be cheaper to get some china whatever oem brand product. It will work as intended but it will not last. If you want something with very decent quality however it would be very difficult to find something to begin with and it will be VERY expensive.

Our goal is to make it last a long time and sound good.

I'll keep you guys updated when I have more to show.
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Old 20th March 2019, 07:39 PM   #8
turk 182 is offline turk 182  Canada
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subscribed!!
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Old 20th March 2019, 09:45 PM   #9
Vintage Audio Projec is offline Vintage Audio Projec
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Ok guys,

The EAO switches have arrived today.
Some extra photo's.

Click the image to open in full size.


a close up

Click the image to open in full size.


Subgroup/Master/Monitor and Talkback modules. (There will also be a VU meter module using the IN13 nixie bargraph to display peak or VU)

Click the image to open in full size.


close up of monitor section

Click the image to open in full size.


Still have to make an account and post it to groupdiy. (I have read a lot there but didn't post anything yet)

That is it for today.
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Old 20th March 2019, 10:12 PM   #10
bonjonno is offline bonjonno  United States
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wow. a thrilling build.
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