Hey I usually record tracks at 16 bit but my buddy wants me to record a vocal track for him at 24 bit. I forget how I select recording at 24 bit, sorry. I know its stupid but how do I change that? Thank you.

I use the Roland V 700 r & V 700 C.
Is that where I should switch from 44, 000 to 48000?

WSS

Well that is your sample rate (44100 48000),  To change your record bit depth, go to Preferences>File>Audio Data, and you can change it there and click Apply.  It will be set for new projects to 24 bits, after your change.
 
Edited to add that your question is NOT stupid.  :)
 
Bob Bone
 

Well thank you very much Mr B!

As an aside in your opinion is there a great benefit to recording in 24 bit all the time?
WSS

Recording in 24 bit has several advantages.

Firstly it's the native built-in bit rate of nearly all interfaces. Telling Sonar to use 16 bit means Sonar truncates the incoming data down to 16 bit from 24. Which uses little cpu but also adds an extra bit-depth converion into the recording process.

Secondly 24 bit has a massively increased dynamic range compared to 16 bit. Which means the noise floor is lower and you can also record at a lower input level into Sonar which helps later when mixing.

Converting back to 16 bit for e.g. CD use is best done once, as part of the final mastering.

The only downside to 24 bit compared to 16 is 24 bit takes up more disk space and puts a higher load on RAM and disk input/output. Most DAWs will never notice this.

So you would suggest record at 24 bit and render at 24 bit?
I had it set on record at 16 and render at 32.

WSS

Record 24, render 32. When you record at 16 bits with render at 32 bits, SONAR just appends zeros to your clips to pad them out to 32 bits. You gain nothing by recording shorter word lengths. But would you hear any difference? Probably not.