I love it when a plan comes together...(Now with short vid)

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plord
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I love it when a plan comes together...(Now with short vid)

Post by plord » Sat Sep 07, 2013 12:39 pm

Michael Ford at Metalbox just shipped me this beast, which has been a central part of the plan for a few years now.

Image

MFOS stereo mixer, modified with MFOS Dual Log/Lin VCAs on every input. I already have one of these mixers in Euro (built by Todd Fletcher during the time when I had no workbench or studio after the move). That Euro module is stock, no VCAs, and built to the schematic which gives 10x gain on the mono channels and 6x on the stereo; it is a great module but I always thought it could do more. I take advantage of the gain differences to wire in gear with lower output than the modular, so my ER-1 and 777 can play nice with the Malekko/Wiard kit.

I asked Michael to pick components with the goal of destroying the quality of your average prosumer Mackie board. Mission accomplished! I can't get any hiss out of this thing unless I max out every gain stage on all channels :) This unit is also built for unity gain since it will serve the needs of the big Wiard only. It's powered off a 15v Elpac wall wart with the 5 pin DIN output; I happened to have one handy :)

It's pretty busy inside, but the usual Metalbox build quality certainly applies:

Image

Running it through its paces now. The notion that started it all was, "hey, I can pull 2/4/8 bar gates out of a Binary Zone. You could use that to arrange tracks on the fly if you had a multichannel mixer with VCAs on every input."

And so here we are. More news as events warrant. :bacon: :nana: :sb:
Last edited by plord on Thu Sep 26, 2013 8:27 pm, edited 2 times in total.

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Kent
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Post by Kent » Sat Sep 07, 2013 12:57 pm

Fucking Ace!

Can you explain why you went with 2 CVs per channel? Besides "Moar = Better"...

VCA's on at least one FX send output would have been even more awesome although I do realize that feature creep and "shoulda/coulda" can go on forever, unlike a delivery date and $$$.

I guess that you can get a somewhat similar result using the Stereo Inputs though. Perhaps even better.

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tIB
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Post by tIB » Sat Sep 07, 2013 1:19 pm

Wonderful!

Liquidcolor
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Post by Liquidcolor » Sat Sep 07, 2013 9:44 pm

Glad to see it arrive at it's home. Paul did the main frontpanel design which I tweaked a little. Build time took a lot longer than expected due to my personal life, but Paul was so patient that he should be up for some sort of award! The shot of the insides was taken on my bench before it was totally finished so the wiring is a little neater now.

The only source of noise are the VCA's and I was able to really minimize that with a few tweaks to the circuit. It's worth noting that the VCA's are hard wired exponential as per it's intended use.

Thanks a lot Paul, hope it's everything you needed.

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thetwlo
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Post by thetwlo » Sat Sep 07, 2013 10:22 pm

:hail: :hail:
beautiful! still love my old wave mult from metalbox/cgs!

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plord
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Post by plord » Sun Sep 08, 2013 11:12 am

Kent wrote:FCan you explain why you went with 2 CVs per channel? Besides "Moar = Better"...
Well, in addition to "more is better" I figured that there would be times when I might need to [FIRST EXAMPLE REMOVED BECAUSE I AM AN IDIOT AND VCAS DON'T WORK THAT WAY AND YOU GUYS ARE SO KIND NOT TO POINT IT OUT] blend a 4 bar square with a 2 bar square to get 75% duty cycle trivially without screwing up pattern lengths elsewhere in the sequence. The MFOS VCA allows for this so why not?
I guess that you can get a somewhat similar result using the Stereo Inputs though. Perhaps even better.
That was my thought. It's not going to be a hardwired mixer with a patchbay, I have one of those already :) This one is supposed to be part of the patch, however the patch evolves. The FX it might talk to are all modular anyway, or will be once they are built: Tau Pipe, Krautrock, Triple Chorus, and two Time Machines. So...CV controlled feedback loops to wacky FX chains? Um, yes! :sb:
Last edited by plord on Mon Sep 09, 2013 4:23 pm, edited 1 time in total.

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plord
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Post by plord » Sun Sep 08, 2013 11:17 am

Liquidcolor wrote:Thanks a lot Paul, hope it's everything you needed.
I'm super pleased so far.

I must say also that Michael was very open about his trials and tribulations and that went a long way towards making the delays bearable. He is a professional and takes his customer care very seriously. I've certainly waited longer for delivery of a piece of musical gear with *much* less communication, so from my end, no harm no foul. It's here now and I'm enjoying the hell out of it.

I have a business trip this week but hope to post a demo of the whole "let the modular arrange its own tunes" trick by next weekend.

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chamomileshark
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Post by chamomileshark » Mon Sep 09, 2013 1:44 pm

nice, looking forward to hearing the demo
Key Gear: Wiard 300 Series, EMS VCS3, Frac Modular (Blacet, Wiard, Bananalogue & Synthesis Technology).

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plord
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Post by plord » Mon Sep 09, 2013 4:25 pm

The pressure and row outputs of a Bugbrand CTL1 are tremendous choices for CV2... :)

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Fnord
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Post by Fnord » Fri Sep 13, 2013 11:27 am

:hail:

there are no words
bsmith: it would be awesome to see people with lots of euro give them pokemon values and do battle

Muffwiggler: I've seen communities ruined over politics. I've seen friendships end over racism. I've never seen these things happen as a result of breasts.

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plord
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Post by plord » Thu Sep 26, 2013 1:55 pm

Here, have a short demo! Quick and Dirty because I know you like it that way...

[video][/video]

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