Seventh Circle Audio

by **craigmorris74** » Sat Dec 31, 2005 11:38 am

Hi,

Was wondering what I would need to do to use a pair of N72's as a coloring device at mixdown. Obviously, a line signal from a recorder would be too hot.

Thanks,
craig

by **tpryan** » Mon Jan 02, 2006 10:04 am

You'll need to use an in-line pad with an attenuation of about 25dB. Depending on your console or recorder, input impedance of the pad should be 10K ohms, output impedance 150 ohms, or as low as you can get. It only takes 5 resistors, do a google search for "balanced attenuator" or "H pad" for some useful calculators. You can easily build one into an XLR connector.

by **Category 5** » Mon Jan 02, 2006 3:17 pm

I built one using two 16k resistors with a 150R resistor across them as the dummy load. It works a treat! If I can find a link with decent instructions I'll post it here.

by **craigmorris74** » Mon Jan 02, 2006 3:32 pm

Thanks for the advice guys. I'll look up schematics.

by **yavuz** » Tue Jan 03, 2006 8:30 am

Is there a way to explain how to build this for users like myself?
I do not have enough knowledge to design, build it myself.
I can follow instructions though?

Also, I might consider buying a pair of these since I want to see how N72 coloring would work for master faders in Pro Tools.

Thanks...

by **craigmorris74** » Tue Jan 03, 2006 9:06 am

Also, I found that Shure (and other places) made a line to mic level pad that can be found for a reasonable price.

by **Category 5** » Thu Jan 05, 2006 2:33 am

Here's a site with all you need to know. it is very easy.

http://www.uneeda-audio.com/pads/

by **tele_player** » Thu Jan 05, 2006 4:04 am

Yavuz - I expect these would sound great to warm up a Pro Tools song. Something like the Folcrom (passive resistive summer) into a pair of these would be ideal. You can build a passive resistive summer for pretty cheap, schematics can be found with a Google search.

by **yavuz** » Thu Jan 05, 2006 7:03 pm

tele_player \$m[1]:Yavuz - I expect these would sound great to warm up a Pro Tools song. Something like the Folcrom (passive resistive summer) into a pair of these would be ideal. You can build a passive resistive summer for pretty cheap, schematics can be found with a Google search.

Hey Tele,

I have finished mixes of my CD.
I want to try the sound of the N72s for a mixdown.
So, I have followed category 5s link above your post.
Is what you are suggesting the same thing?
I will search google for Folcrom (passive resistive summer) as well.
Thanks for the tip category 5, Tele....

I have one question...
Is it possible to find a box for this thing So I can use it with everything else?
May be use it with patchbay when I need to?

by **tele_player** » Thu Jan 05, 2006 7:27 pm

What I was suggesting was a summing box - you would send 4 (or 8, if you've got more channels of D/A) stereo submixes out of the 002 Rack, and the 'summer' would actually do the mixing and attenuation, then you'd go into a pair of 7th Circle preamps, then into something to record the stero mix.

Search for 'Roll Music Folcrom'. It's about $800 - you could build something similiar for a LOT less, probably about $100, mostly for connectors.

But, the simplest thing is to build two passive attenuators, and mix as you already do in ProTools LE.

by **yavuz** » Fri Jan 06, 2006 5:27 pm

tele_player \$m[1]:But, the simplest thing is to build two passive attenuators, and mix as you already do in ProTools LE.

OK, I have read mixed opinions about this subject.
Some say, having all 16 outs into a passive summer (like Folcrom) is better than having only the stereo out from PT and running it thru a pait of Neves or a Pair of Millenia HV-3 (I have C84s as well as N72s).

On the other hand, others suggest that sending stereo out to a pair of nice pres will sound as good as sending them thru a unit like Folcrom.
Now which is it?

by **tele_player** » Fri Jan 06, 2006 5:55 pm

There are plenty of opinions on this. I'd try running the stereo mix through the N72's. You need a handful of resistors for attenuation.

by **cstar** » Tue Jan 17, 2006 8:34 pm

I am doing this with a pair of N72's. I built an 8ch passive summer and it's working very well. It's based on several threads that are on the Prodigy group. It's fully balanced in to out. All you need is

16 x 10K Resistor

2 x 150R Resistor

10 TRS Jacks

Buss wire

I mounted it in a scavenged patchbay panel. By the way I love my N72's. Thanks Tim!

by **craigmorris74** » Tue Jan 17, 2006 8:46 pm

[quote="cstar"]I am doing this with a pair of N72's. I built an 8ch passive summer and it's working very well. It's based on several threads that are on the Prodigy group. It's fully balanced in to out. All you need is

16 x 10K Resistor

2 x 150R Resistor

10 TRS Jacks

Buss wire
quote]
I'll probably end up trying something like this. Looks like the sensible thing to do.

by **seb** » Sat Jan 21, 2006 3:32 pm

Glad someone started this thread.
I would like to use the n72's I have instead of my mix out ( bypass the master section )of the console, what would be the best way to do this ? The console is a soundcraft 6000.
What I want to do is use the board channels then in to the n72's then in the recorder.
I've thought about this for some time but never found how.
thanks

Seventh Circle Audio

N72's at mixdown

N72's at mixdown

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