Login / Register
 
Summing two stereo signals before monitors
New Reply
Subscribe
Hippocratic Mastering
Thread Starter
#1
29th January 2013
Old 29th January 2013
  #1
Gear maniac
 
Hippocratic Mastering's Avatar
 
Joined: May 2008
Location: Leeds, UK
Posts: 222

Thread Starter
Hippocratic Mastering is offline
Summing two stereo signals before monitors

Hi all,

I am currently using ITB gain adjustments for level matched A/B comparisons. However, I would like to do this in the analogue domain if possible, to allow me to keep the mastered track at its exact volume rather than attenuating it. I have a spare DAC with an output level control (Benchmark DAC1) available, and I can easily handle switching between the two signals ITB, and both my monitor DACs have independant volume controls, so all I really need to do is sum the two signals before my monitors.

Is there a simple, off the shelf product that accomplishes this with minimum loss of fidelity? It's my understanding that a simple Y Split cable would be a very bad idea. I could always buy a Coleman monitor controller, but it seems overkill when I would only really be using it to sum two signals together - I would not need any of the other functions at all.

I don't want to go DIY - is there something cheaper than a Coleman that accomplishes what I want and maintains signal accuracy?
__________________
Hippocratic Mastering: Do No Harm to your carefully recorded and mixed audio.

Tom Woodhead, Mastering Engineer

http://www.hippocraticmastering.com/
Greg Reierson
Verified Member
#2
30th January 2013
Old 30th January 2013
  #2
Lives for gear
 
Greg Reierson's Avatar
 
Joined: Jan 2007
Location: Minneapolis
Posts: 1,725

Verified Member
Greg Reierson is offline
Seems to me you want switching, not summing. A simple input selector with DAC A on input 1 and DAC B on input 2 should do what you're looking for.

You could use something like Coleman Audio LS3 | Sweetwater.com if you're running unbalanced.

For balanced, the balanced Coleman is a great option.
__________________
Greg Reierson
www.RareFormMastering.com
Vinyl : CD : Analog : Digital

"If the album isn't competing for singles airplay in focus groups, forget about loudness!" - Bob Olhsson
#3
30th January 2013
Old 30th January 2013
  #3
Lives for gear
 
666666's Avatar
 
Joined: Jan 2005
Location: Long Island, NY
Posts: 3,073

666666 is offline
Yes, the LS3 is a cool little tool... have several, they work great.
Hippocratic Mastering
Thread Starter
#4
30th January 2013
Old 30th January 2013
  #4
Gear maniac
 
Hippocratic Mastering's Avatar
 
Joined: May 2008
Location: Leeds, UK
Posts: 222

Thread Starter
Hippocratic Mastering is offline
As I say, I would rather do the switching inside the DAW if possible. It's just easier for my workflow to press the "s" key on the keyboard than reach out and flick a little switch. I don't think any added noise should make too much difference, right?

That said, I think I might have a lead on a cheap Coleman PS1A so will likely go with that now. Does anyone know how the input selection switches work on these devices? If I select one input are the others automatically deselected? I don't really mind either way as the PS1A switches seem nice and robust, but would be good to know.
#5
30th January 2013
Old 30th January 2013
  #5
Moderator
 
psycho_monkey's Avatar
 
Joined: Jun 2006
Location: Sydney via London
Posts: 22,428
My Recordings/Credits

Send a message via Skype™ to psycho_monkey
psycho_monkey is offline
Quote:
Originally Posted by kingtoad View Post
As I say, I would rather do the switching inside the DAW if possible. It's just easier for my workflow to press the "s" key on the keyboard than reach out and flick a little switch. I don't think any added noise should make too much difference, right?

That said, I think I might have a lead on a cheap Coleman PS1A so will likely go with that now. Does anyone know how the input selection switches work on these devices? If I select one input are the others automatically deselected? I don't really mind either way as the PS1A switches seem nice and robust, but would be good to know.
Summing with 2 open "sources" is likely to change the signal far more than a switching box and ITB level adjustment, wouldn't you think?

Any form of analogue trim is going to need extra components in the chain...I guess a passive attenuator is about as close as you're going to get to transparent.
__________________
<Shameless Plug>

If I've ever helped you with a technical problem or provided you with advice you found useful, you can more than repay me by checking out, and maybe buying a couple of songs, by a singer I'm working closely with. It would be much appreciated!

http://itunes.apple.com/gb/preorder/...an/id513648911

http://www.amazon.com/Jack-Robert-Ha...robert+hardman

</Shameless Plug>
Hippocratic Mastering
Thread Starter
#6
31st January 2013
Old 31st January 2013
  #6
Gear maniac
 
Hippocratic Mastering's Avatar
 
Joined: May 2008
Location: Leeds, UK
Posts: 222

Thread Starter
Hippocratic Mastering is offline
Quote:
Originally Posted by psycho_monkey View Post
Summing with 2 open "sources" is likely to change the signal far more than a switching box and ITB level adjustment, wouldn't you think?

Any form of analogue trim is going to need extra components in the chain...I guess a passive attenuator is about as close as you're going to get to transparent.
Yeah, I guess you're right. I think I'm resigned to the Coleman/other switching box option, or I might just wait and get a Crookwood or similar, as that is the long term plan.
New Reply Submit Thread to Facebook Facebook  Submit Thread to Twitter Twitter  Submit Thread to LinkedIn LinkedIn  Submit Thread to Google+ Google+ 
 
Topic:
Thread Tools
Search this Thread
Search this Thread:

Advanced Search
Similar Threads
Thread
Thread Starter / Forum
Replies
A27Hull / Geekslutz forum
36
A27Hull / So much gear, so little time!
3
Pan Papason / Mastering forum
17
ho-fi / Remote Possibilities in Acoustic Music & Location Recording
2
cleantone / Remote Possibilities in Acoustic Music & Location Recording
1

Forum Jump

SEO by vBSEO ©2011, Crawlability, Inc.