OK - thanks for the detailed reply to my initial request for info.
The Mixing Latency settings only apply if you are using WDM or MME drivers, and do NOT come into play for ASIO. Also, the Mixing Latency is an override to what the Wave Profile process determines. And, the values for the total round trip latency you report are quite high.
Here is a link to the appropriate doc from the manual:
http://www.cakewalk.com/Documentation/default.aspx?Doc=SONAR%20X2&Lang=EN&Req=Dialogs2.052.html OK, so let's try the following:
1. Let's start with the AudioBox USB, WITHOUT having Sonar running. Make sure it is plugged into either a USB 1.1 or USB 2.0 port. Do NOT use a USB 3.0 port. The interface was designed for use with a 1.1 port, but you should still be OK with a USB 2.0 port, as far as I know. IF you happen to have a USB 1.1 port on your computer, use that one as your FIRST choice for ports.
2. The interface should have an icon that lives in the system tray (the icons down in the bottom right portion of your screen). Open the audio interface software UI by double-clicking on the icon in the system tray.
3. Set the audio interface to use as a starting point, a Sample Rate of 44.1, and an ASIO Buffer Size of 128. Close user interface, and then power down and turn the power on again for the interface.
4. OK, now for Sonar. Fire up Sonar (have the icon for Sonar configured to Run As Administrator), then close the Quick Start dialog box that opens when you first get into Sonar.
5. Now, hit 'P' on your computer keyboard, to open up Sonar Preferences, then click on Audio>Playback and Recording. Make SURE you select ASIO for the Driver Mode, and then make sure to click Apply.
6. Now, go to Preferences>Audio>Devices. Make sure all available check boxes for your AudioBox are checked for both Input and Output Drivers. Click on Apply.
7. OK, now click on Preferences>Audio>Driver Settings. Sonar should have already populated the Record and Playback Timing Master information to point to the appropriate settings for your AudioBox. Make SURE you Sample Rate is set to 44100. If you have to CHANGE the setting to get to that value, make sure you then click Apply. Whatever settings are there for the Mixing latency will not matter, because they are not used for ASIO. I do not remember if you have to click off and back on to this page to see the values for ASIO Reported Latencies, but these values should now be in pretty good shape. On MY system, which again uses an AudioBox 1818VSL, my reported Total Roundtrip Latency is 9.8 milliseconds and 432 samples. You should see values that are in the same ballpark, certainly less than what you originally reported in your earlier response to my request for information.
OK, so now try out the above settings and post back on how it sounds NOW, after having made the settings changes.
Bob Bone