Taperssection.com

Gear / Technical Help => Recording Gear => Topic started by: waltmon on July 02, 2008, 09:29:45 AM

Title: 744T 3.5mm analog line out
Post by: waltmon on July 02, 2008, 09:29:45 AM
....Does this output all 4 channels?  I was thinking it would be cool to run this output to into my MR1 so I have a 1 bit 4 channel source as well.
Title: Re: 744T 3.5mm analog line out
Post by: ghellquist on July 02, 2008, 01:59:51 PM
Nop.
The MR1 can only record 2 channels anyway - so stereo it is.
You could get things out of the line-outs on the SD744T, but remember that those signals has gone through AD and DA inside the SD box.

Gunnar
Title: Re: 744T 3.5mm analog line out
Post by: waltmon on July 02, 2008, 04:06:40 PM
I realize that it is a stereo ( 2 channel ) output...my question is do you get an output mix of the 4 channels?

   It makes sense that the line out would provide the 4 channel mix...ie: 4 in 2 out
Title: Re: 744T 3.5mm analog line out
Post by: ghellquist on July 02, 2008, 05:57:44 PM
Yes, you can select to put, say, sum of input 1 and 3 to Left and sum of input 2 and 4 on Right. (Or just about any combination).

Its in the manual, you might consider checking it out, page 24, although I agree it is quite convoluted reading:
http://www.sounddevices.com/download/guides/744t_en.pdf

There are a few disadvantages though. First is that you have very little control over the relative volumes, no mixer as such only on/off. But main disadvantage is if what you are after is the "heavenly sound" of the MR1, the sound is already "spoiled" by the 744. The reason is that it is first AD-converted and this is the signal recorded on disc. Secondly it is DA-converted and output to the line-out. And after that it gets AD-converted again in the MR1. Now, admittedly both AD and DA in the 744 are good stuff.

Hope this helps, not meaning to come across as anything but helping, sometimes internet gets in the way (or perhaps it is writing in a second language).

Gunnar
Title: Re: 744T 3.5mm analog line out
Post by: mmedley. on July 02, 2008, 06:07:53 PM

First is that you have very little control over the relative volumes, no mixer as such only on/off.


This is going to be your biggest disadvantage, but if you run really conservatively you should be fine. Just make sure your routing on the 744t is set properly. The MR1 doesn't clip until +3db right? Seems I remember reading that when recording with DSD so that might give you a little leeway. Give it a whirl. Nothing to lose.
Title: Re: 744T 3.5mm analog line out
Post by: waltmon on July 03, 2008, 08:47:18 AM
....I have it set up now where the MR-1 is coming off of the RCA analog out of the V-2 off off my U89's...as a back up recorder.

   Then I got the idea of a 4 channel DSD...I'm doing Philly and VA Panic in a week or so.  I'll report back with the results.
Title: Re: 744T 3.5mm analog line out
Post by: cfox on July 03, 2008, 01:06:40 PM
...as a back up recorder.


Do you not trust the reliability of the 744 as the main deck?
Title: Re: 744T 3.5mm analog line out
Post by: waltmon on July 04, 2008, 05:07:00 PM
Love the 744T, the 4 channel stuff blows me away. Taped upwards of 500 shows and the first 4 channel, 24bit I did with my 744t was in the top ten I've done, no doubt


...honestly the MR-1 is more of a toy. It's cool when I don't or can't bring the whole gear bag...I like to use it in the car with the Ipod jack on my car stereo.