Headphone Mixes from Logic

I am considering rationalising my studio to a mixerless set up ( see Jim Frazier's comments in a recent thread http://discussions.apple.com/message.jspa?messageID=8174674#8174674)
I bring live projects from studios and add over dubs such as vocals, horns, percussion etc. I have a simple headphone monitoring system which is perfect for up to 4 musicians to record to what is already in Logic - say a horn section and percussionist.
So far all monitoring in my set up has run from the mixing desk which is the hub of all the inputs and outputs via a loom to my MOTU 828 - but my ideas have been opened up by comments such as Jim's ( see above thread) where he describes an essentially mixerless set up involving such devices as a Mackie Big Knob or Presonus + an Apogee Ensemble + A control Surface ( Mackie or Euphonix type thing)
I have 3 questions:
i) Practically speaking what is the best way to plug mics and line inputs into the back of the audio interface. Do most 'mixerless' studios use some kind of rack patch bay.. or am I exaggerating the hassle of having to lean over a rack where the inputs for mic are facing the wrong way?
ii) Is it practical and easy to create separate software mixes ( say one for horn section and one for percussionist) in Logic and route them to headphones via outputs of the Presonus/Mackie Big Knob type studio control box? Do you use Software Monitoring and is latency an issue here?
iii) Could someone just confirm the basic bits of gear that one needs to do this: ie Mac + Audio Interface + Patch Bay (?) + Studio Control Box + Control Surface
many thanks to anyone who can contribute
m s

Hi ms,
I'd be curious what the other "mixerless" guys are doing as well, but I can tell you how I'm managing things here.
In my studio, I have dedicated mic pres, so I don't plug my mics into an audio interface. The mics get plugged from the mic preamps right to the converters, which in my case, is a Apogee Rosetta 800, as well as Lavry 4496's.
I have XRL jacks out in the studio, and these jacks have their cable run through the wall, and into the control room, where they terminate to a patch bay. I also have the ins and outs of my mic pres, and hardware compressors coming up at the patch bay, as well as the I/O's of my converters. Basically, any piece of gear in my control room with an input and output is set-up to be available at the patch bays.
So when I plug a mic into the XLR wall jack out in the studio, I simply connect patch cables at the patch bay, to designate whatever signal flow I want for that session. This is how the "big" studios have done it for decades, and once you take the time and money to set this up, you'll kick yourself for not doing it sooner.
I too, do all overdubs here at my studio, Any live tracking with a rhythm section, is always done elsewhere. But aside from me recording my own guitars, I too often work with percussionists, horn sections, string players, and vocal groups, sometimes as many as 6 to 8 singers at a time.
My solution for having separate headphone mixes without a mixer was to get a dedicated headphone system. I ended up going with the Hear Technologies Hear Back system.
http://www.heartechnologies.com/hb/hearbackintro.htm
This system can send something like ten different audio paths to the Hearback satellite mixers, where the talent out in the studio can customize their mix to their hearts content. However, I don't ever give anyone THAT much control . I keep it pretty simple... a stereo mix of the track, a "more me" knob, so they can control their voice or instrument level within the track, and I also give a reverb send, so they can add reverb to their voice or instrument, without me ever having to hear it in the control room.
This system is fed from the separate outputs of my converters, and my Logic template that all songs start from is set-up so that all my Aux tracks are feeding this headphone hub in the manner I described above. So all routing does take place from within Logic.
I do monitor with software monitoring on, but it wasn't until I got the Apogee Symphony system that I was able to do that reliably. Before the Apogee system, I used the Total mix latency free software that came with my RME FF800, much like the cue mix software that came with your MOTU piece. But monitoring in software outside of Logic always felt "left footed" to me. I MUCH prefer the DAW work like a tape machine as far as that aspect goes.
And I do have to admit, it's finally nice to be able monitor through Logic, in real time, with no perceivable latency at all. I went 6 years without a mixer, waiting for technology to allow this type of performance from a native system. The Apogee Symphony card along with the 8 core MacPro finally got me there.
And as I mentioned in that thread you linked to, I use a Presonus Central Station as talkback to the talent, as well as a master control room volume knob, and speaker selector.
All in all, it's working out really, really well.
I will say though, that having a dedicated hardware mixer is not necessarily a "bad" thing, and until you have a system where latency THROUGH Logic is basically undetectable, I would move slowly, and cautiously. It's imperative that the talent be able to hear their instrument or voice as they are used to. Any detectable latency, even a small amount, WILL deteriorate a performance, no matter what any body tries to tell you. And, it makes your studio appear "semi-pro".
Latency free software like Cue Mix or Total Mix can make the mixerless studio a reality though, when throughput latency is detectable. It worked for me for years.
If I can answer any more questions, don't hesitate to ask...

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