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  #1  
Old 08-24-2011, 10:29 AM
paul1979 paul1979 is offline
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Isonoe/James Murphy DFA Rotary Mixer

Interesting news

James Murphy announces on Beats in Space that a DFA mixer is in the pipeline, currently being developed together with UK company Isonoe, and designed to challenge Bozak and other rotatory mixers. It's due for release in early 2012.

Listen to him talk about it after the first track in part 1:

http://www.beatsinspace.net/playlists/586
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  #2  
Old 08-24-2011, 01:32 PM
Mistick Krewe Mistick Krewe is offline
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cool... nice to see more quality units in the pipeline...

can't wait to hear about it more...
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  #3  
Old 08-25-2011, 02:20 AM
Pern Pern is offline
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I liked this from the interview: - Discrete design.

A discrete design with almost the same functionality (Not ISO) was the first i tested as a DIY Mixer project (Check the DM21 project on my website). If you use a SRPP-based design like the Bozak mixer then it requires very little components. And a discrete ISO normally just use simple JFET buffers instead of the OPs.

The biggest problem with this discrete approach from a DIY point of view is that almost all gain stages/buffers needs to be 100% component matched to get the best performance out of them. And i don't think people really want to buy like 100s of each Transistor/FET and do this just to build one mixer. This is the main reason why the DM21 project is put on hold at the moment and the first of my DIY mixers is a TL074 based one.

But i really like the concept and hope they put it in production.

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Last edited by Pern : 08-25-2011 at 03:39 AM.
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  #4  
Old 08-25-2011, 07:47 AM
Estacy Estacy is offline
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Quote:
Originally Posted by paul1979
Interesting news

Listen to him talk about it after the first track in part 1


he said it would be better than a DJR 400, for a lot less money.
It would also have more features than the prototype he brought to the studio, which is the picture above, right?
so I think function wise it would be safe to say that is has 4 to 6 rotary channels, an isolator and of course booth, master, HP control etc. Sound quality wise, who knows?
I'm also wondering where it's going to be sold and how. will it be like most of its competition via telephone/mail worldwide? or like Rane, being available for sale at large retailers?
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  #5  
Old 08-25-2011, 09:36 AM
Richi Richi is offline
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There's plenty of modern circuits that are equal or better than discrete, will be interesting to see how it pans out.

What's the function of the record weights, just for display maybe
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  #6  
Old 08-25-2011, 11:51 AM
paul1979 paul1979 is offline
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do those things improve sound quality?
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  #7  
Old 08-25-2011, 12:40 PM
Mistick Krewe Mistick Krewe is offline
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i think they do, even though I don't always use them...

same with the thick rubber techincs mat, IMO of course...

methinks they both basically damp the platter more than without...
and a platter that doesn't ring is a good thing, generally speaking...


here's a DIY build of one,
http://www.soundfountain.com/amb/puck.html

Last edited by Mistick Krewe : 08-25-2011 at 01:18 PM.
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  #8  
Old 08-25-2011, 01:22 PM
Balaroue Balaroue is offline
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They just keep the record flat.
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  #9  
Old 08-25-2011, 03:39 PM
vinyl_junkie vinyl_junkie is offline
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It's got Justin's name on it therefore by default it is going to be the shit heheh :-)
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  #10  
Old 08-25-2011, 04:38 PM
wheresmejumper wheresmejumper is offline
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that is probably,no,definately the ugliest mixer ive ever seen.
they should give Pern a shout for some design tips!

Last edited by wheresmejumper : 08-25-2011 at 04:44 PM.
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  #11  
Old 08-26-2011, 12:26 AM
Richi Richi is offline
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Prototype's are purely functional, but agree it's ugly.
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  #12  
Old 08-26-2011, 05:35 AM
Pern Pern is offline
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Looks like a std Hammond enclosure that they just painted black. I think the original looks ok, but the mixer layout is really bad. But it's just a prototype..

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Last edited by Pern : 08-26-2011 at 05:43 AM.
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  #13  
Old 08-27-2011, 03:35 PM
Fred Bissnette Fred Bissnette is offline
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that chassis is dope but i would put every thing on the angled piece that would be awesome.
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  #14  
Old 01-05-2012, 12:10 PM
man_traic man_traic is offline
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Quote:
Originally Posted by Pern
Looks like a std Hammond enclosure that they just painted black. I think the original looks ok, but the mixer layout is really bad. But it's just a prototype..


Nice breadbin
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  #15  
Old 01-05-2012, 05:03 PM
Special.K Special.K is offline
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That is a nice Bread bin Man_Traic!

Building a production mixer especially a discrete one is going to be a lot of work but if anyone can do it Justin can!
God know I wouldn't even try! The last speaker box i built i made 13 test cabinets and I could of made more if time aloud, I couldn't imagine the testing involved in building a production mixer!

Good Luck to Justin, hope to be buying one soon!
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  #16  
Old 01-05-2012, 07:46 PM
bossa nolyx bossa nolyx is offline
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The simulation of a circuit is (...or better can be) much more precise than the simulation of loudspeaker acoustics. And it's much easier I think.
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  #17  
Old 01-07-2012, 05:36 AM
Pern Pern is offline
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I also hope that they put this in production, it looks really interesting.

When designing the simulation phase is mostly to verify that the design is ok. So it's doing the the design that is the tricky part. And when doing discrete designs you really must know how every FET/Transistor works/sounds and how to get the best out of them, there are so many factors that affect this.

Here is one of my discrete designs, it might look simple but i think i spendt over 3 months testing different designs/components etc. (for all schematics): http://bozure.com/T1.aspx?PID=58
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  #18  
Old 09-19-2012, 05:29 PM
now now is offline
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Anyone hear anything about this mixer, recently? I emailed Justin a month ago, but never heard back, and I don’t want to disturb him any further unnecessarily, so if anyone knows anything new, please share.
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  #19  
Old 09-19-2012, 05:33 PM
now now is offline
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James isn’t a fountain of information either.
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  #20  
Old 09-20-2012, 01:53 PM
charles0322 charles0322 is offline
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In the announcement int. radio piece he disses the DJR400 as a piece of junk full of "chips"

except, the djr400 actually exists is commercially avail. and it sounds pretty decent.

it seems like this guy Murphy likes to talk shit about magic mixers that Isonoe will build for cheap that surpass everything out there, he even gave a release date.

pipe dream or reality, who knows. up until now just talking shit i guess
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  #21  
Old 09-20-2012, 08:39 PM
Richi Richi is offline
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For someone in the recording industry to make a statement like "as a piece of junk full of "chips" then they must be completed deluded. Nearly all mixing consoles are full of IC's and the majority of recorded music would have passed through hundreds of IC's before reaching any kind of playback system.

I think it's disrespctfull to electrical engineers to come out with rubbish like that.

Wonder what's inside that CDJ, maybe a few of those nasty IC's that ruin music or maybe some discrete components that turn out of key mixing into a harmonic wonder, perhaps that digital number crunching piece of silicon, that converts electrical signals into bits wards of evil spirits, who knows!

Last edited by Richi : 09-20-2012 at 08:44 PM.
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