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 Forum index » DIY Hardware and Software
Line headphone mixer
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bugbrand



Joined: Nov 27, 2005
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PostPosted: Tue Apr 03, 2007 3:32 am    Post subject: Line headphone mixer
Subject description: Lots of dials - why DIY mixers drive you nuts
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Just thought I'd share a pic of a custom job I did last week.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

The quest was to make a headphone distro mixer to take 16 line inputs and route them to four independent output busses. Also space was at a premium and limited to 2U.

So, things only just fitted in with standard parts - 70 knobs and only a few mm clearance all around. I think it was thanks to learning off DIY modulars that I was able to design this without too much complexity.

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para



Joined: Oct 16, 2006
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PostPosted: Tue Apr 03, 2007 6:52 am    Post subject: Reply with quote  Mark this post and the followings unread

not many places care to tailor a headphone mix to that degree for four players. they must have a nice installation. how many hours did you put in that beauty?



steven
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goodrevdoc



Joined: Sep 11, 2006
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PostPosted: Tue Apr 03, 2007 4:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

very cool, bugs. I love the neatness of the knobs, like little soldiers all formed up. excellent job
-justin
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bugbrand



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PostPosted: Tue Apr 03, 2007 5:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks!

para wrote:
not many places care to tailor a headphone mix to that degree for four players. they must have a nice installation. how many hours did you put in that beauty?



steven


Yeah, actually most who would want to would probably just use some software mixing -- still, its nice to have in hardware and makes me think of doing my own custom killer mixer / router - plenty of aux sends for complex routing.

I budgeted about 12 hours for design and build - that's a good thing about mounting the pots on the pcbs -> design one simple input channel and then replicate 16 times over, add a bus strip and a board of four output mixers and there you go...


goodrevdoc wrote:
very cool, bugs. I love the neatness of the knobs, like little soldiers all formed up. excellent job
-justin


drills & dremels! - I have to chop the end off every pot and had been using a hacksaw - damn that's time consuming and kind-of tricky - but now I've started using a dremel cutoff tool and they fly off.!.

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Mikmo



Joined: Dec 01, 2005
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PostPosted: Fri Apr 06, 2007 1:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

Very nice mixer. 12 hours is "cheap" for a device like that.

Yes indeed the Drmel is a cool tool. I use mine on almost every project.

I buy the reinforced cutoff wheels they last many times longer than the standard ones. I had some bad experiences with the standard wheels breaking up in a bunch of very sharp splinters flying around at very high speed, one actually penetrating a beer can.

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Uncle Krunkus
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PostPosted: Fri Apr 06, 2007 2:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Mikmo wrote:
I had some bad experiences with the standard wheels breaking up in a bunch of very sharp splinters flying around at very high speed, one actually penetrating a beer can.


That sounds terrible!

Did you lose any beer? Very Happy

BTW, great job on the mixer Bug. I'd probably spend months on something like that.

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Mikmo



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PostPosted: Sun Apr 08, 2007 3:48 am    Post subject: Reply with quote  Mark this post and the followings unread

No beer was harmed in this experiment, at the time of the accident the can was fortunately empty.
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