I have read various threads about the use of Increase Width in Channel tools , but I kind of like it on an acoustic guitar intro to a song I have . I never record acoustic on a stereo track!
Channel Tools is now greyed out and does not do anything for me , so I went to an old project and found where I had used it before on an acoustic guitar mono track and it was all fine and working not greyed out.
I had my new and old projects open at the same time with both windows of CT on screen, both with "Increase Width" setting , one working , the other greyed out L and R input mode sliders . I checked the tracks and both were in mono.
Must be something obvious , can anybody help?
Ric  (on Newburyport)

Check to see if you have the FX Bin bypassed. 
Right click in the FX Bin and see if that's been checked.
 

 
The L - R sliders are greyed out on my system when I put channel tools on a mono track.  Changing the track to stereo enables them.  I fail to see how you could pan and play with the width on a mono track.
 
I believe Channel tools received an update in the not too distant past.  Maybe something changed.

You've definitely got to have your track set to stereo, not mono, for that to work. Even if you've recorded it in mono you still need to switch the track to stereo.

Channel Tools has an "increase width" setting? I don't see one. How would Channel Tools increase width, with the L/R delays in a Haas style setting? 

sharke
Channel Tools has an "increase width" setting? I don't see one. How would Channel Tools increase width, with the L/R delays in a Haas style setting? 

You might find this helpful...it's not a Haas thing, it's a stereo field placement thing.

 
If you put something like R-Mix on the output it is very clear that the most effective way of playing with position and width is a combination of pan, phase and delay all of which are present in Channel Tools (or you can set up 2 tracks to do the same).  The actual width controls in Channel Tools don't appear to do much at all.

Anderton

sharke
Channel Tools has an "increase width" setting? I don't see one. How would Channel Tools increase width, with the L/R delays in a Haas style setting? 

You might find this helpful...it's not a Haas thing, it's a stereo field placement thing.

I'm still not sure how Channel Tools can increase the perceived width of a track. I see how it can move the sound around the stereo field, but I don't hear any actual widening. 
 
Surely if those sliders were capable of increasing perceived width, then you could put channel tools on a stereo track containing a mono source and make it sound stereo. But if I try that on a mono source on a stereo track and move those sliders and angle/width controls around, all I hear is regular panning and/or the source getting quieter.

Think of it this way. Assume you have a mono track. Pan it far right (or far left, depending on your politics). Now pan it to the center. Even though it's still a mono/point source of sound, it will sound wider because it is now in both channels.
 
Now take a stereo signal and move the channel tools faders to the center with no width. It becomes mono. Increase the width parameter on the right channel so that the right channel spans from center to right. The overall sound will appear wider.

Anderton
Now take a stereo signal and move the channel tools faders to the center with no width. It becomes mono. Increase the width parameter on the right channel so that the right channel spans from center to right. The overall sound will appear wider.

It sure doesn't look wider in R-Mix.  If fact setting the width sliders to max narrows the signal down to a vertical line.  Most changes to the width sliders do nothing at all.