Using Sonar X1 and a VS-700 studio.
 
I moved my studio to a new location and things have been working fine; but when I recorded a vocal for the first time in the new location, something weird happened:

• I could hear the recorded tracks just fine in headphones and monitors, but could not hear the live vocal as it was being recorded.
• I *could* hear the reverb on the vocal. I turned that very low to avoid confusing the singer.
• After recording, the vocal track was there and fine, but it was obviously difficult to record when the singer and I could only hear her voice in the open air.
• I have not had this issue recording virtual instruments.

The blue echo thing on the track was on--sorry, I don't recall the real name for that--the fader was up, and everything looked normal. I think I have forgotten or am missing some very basic setting somewhere.
 
Thoughts?  Thanks.

I use a mixer ahead of the interface with the audio from the daw looping back through the 2 track inputs.
And monitor that mixer. 0 latency no matter what the buff.

bitman
I use a mixer ahead of the interface with the audio from the daw looping back through the 2 track inputs.
And monitor that mixer. 0 latency no matter what the buff.

 
Ditto, I started using a little Mackie mixer I bought for under $50 as a headphone mixer a long time ago. It has effects for those who like that while tracking. You can make it loud!! I have instant control over the headphone mix. 
The only thing is you need to be able to split out each input. 
My vocal mike goes through a pre amp which has 2 outputs. For my guitars I will run an extra mike on the amp and for the acoustic I steal from my DI box. I leave all this set up so I can record just about anything without swapping cables around. 
I even have a drum machine patched in for quick demos and finding tempos. 
 
I would think a V studio has very capable direct monitoring built in,, youève possibly hit a button that changed things. 

Appreciate the advice for future set-ups, guys. For now, I wish I could figure out what got messed up.
 
I have tried direct monitoring with the V-Studio and could never make it do anything. I follow the directions and push the buttons, but nothing changes.

I am confused about how you could hear the reverb on the vocal without hearing the vocal.

do you have this issue with a new project? sometimes projects get corrupted and weird anomalies like this happen.  what setup do you have where you hear the reverb, is it on a buss? the track? lastly do you normally use the live input function to have no latency(don't know if that unit has this function) or do you normally use input monitoring from the track and leave the hardware input muted?

Possibly you have the vocal track Outputting to the Reverb bus instead of Sending? Or, if the reverb is on the vocal track, you'll need to adjust the wet/dry mix in the plugin to be mostly dry. Normally you would want to  put the reverb on a bus, set it to full wet, and Send from the track to the bus at a low level.
 

bitman
I use a mixer ahead of the interface with the audio from the daw looping back through the 2 track inputs.
And monitor that mixer. 0 latency no matter what the buff.

In this setup how is you daw getting the mic signal to record?

Thanks for replying.  To answer the questions:
1-I always set up a bus for the vocal reverb, a bus for drum reverb, and a bus for instrument reverb.  I insert a reverb (like Lexicon) into each reverb bus and set it at 100%.  I then use the track send to send to the reverb so the singer can hear reverb while recording.  I usually set the send pretty low (like -24).
2-The setup is the same I have used for years.  The mic is plugged into the VS-700 I/O.  The I/O is connected to the VS console via a proprietary connection.  The console is connected to the computer via USB.  I have been recording tracks and everything is working fine--except for this new vocal problem.
3-In Preferences, I have recording set to Overwrite when recording vocals (so I can punch in) and to Sound on Sound when recording MIDI.
4-Direct Mix is OFF in the VS studio (because I have never been able to tell it works right).
5-In Sonar, I select the proper VS-700 input on the track.  Output is Master.  This is working since I am successfully recording the voice.  It is just the monitoring during recording that is odd.
6-I tested the set up somewhat before the singer arrived.  I could hear myself in the mic and was getting a good level.  This all seems to fall apart when arming the track and recording.
7-Input echo is ON on the track.
 

Hearing the reverb says to me that the vocal is successfully getting into cakewalk.

To troubleshoot, i would disable all fx (e key).

If you can hear the vocal prior to starting record, great! Trace the path from studio track to bus. Note the fx and consider disabling them after hitting e to re-enable all.

If you cannot hear the vocal prior to record after disabling fx, go to the audio track, route it directly to your interface. Ensure input echo is on. Click record enable.

Still can't hear it? Check the input gain on the interface. Do you need phantom power enabled on this Mic?

...

Once you can hear the vocal, try recording and see if you can hear it. Mute the reverb bus if necessary. Solo the vocal track. Is it working?

If yes prior to record and no while recording, then i understand your frustration, konradh.

Maybe look at your sound on sound vs overwrite setting?

After recording for a bit without hearing it, hit stop and play it back. Can you hear it?

...

It sounds like the act of recording is causing the issue. That makes me wonder whether the vocal is set as the input on more than one audio track. One is record enabled and one is not?