Hello, I am attempting to record an Alesis DM10 studio kit and I have never done this before. I am using Sonar 8.5 studio with a Delta 1010 LT sound card. 3.2 quad core, 8 gigs of memory. Right now I am running from the DM10's headphone jack to a behringer UB802 mixer and splitting the signal left to one channel and right to another channel. Then I am running it through a two channel compressor with the left and right in their own channel and then into the Delta stereo left and right. I'm trying to pan the toms to go left to right. The LED's on Sonar's mixer view indicate that the toms are doing what I want them to, but it isn't coming back through the headphones that way. According to the LED's, the toms are panning nicely from left to right, but in the headphones or monitors it sounds like they are in the middle. I am perplexed. I hope I explained myself well. Thanx!

I can't actually give advice, cause I've never played with e-drums, but your post raises some questions.
Why are you not using the audio-outputs of DM10? According to the specs such exist. If you take the audio from the headphone output of DM10, how are you actually panning individual kitpieces? Does it take place inside the DM10 module?

What do you use the mixer for? It doesn't seem to have any purpose here, because you can't mix anything anyway if only the left and right pass through. Effects/EQ maybe? Why not directly to compressor and Delta?

Make sure you have the Interleave set to stereo in the console.

I used the mixer out of habit. I guess I'll have to try other methods after I check the interleave. Thank You!

YES! it was the Interleave in the console view. Thank you so much daveny5. It's always a button, isn't it?  LOL

just watch my video real quick:
http://www.youtube.com/watch?v=TjZS61Wg-XY

you would fare much better by using the sounds in sonar than your drum machine.
I have an alesis sr 16 (the one in the video)
but I know the sample rate are either identical or better in sonar.

just watch the vid and you tell me.

keep in mind, you are using the midi from your alesis to trigger the parts of your song, meaning you don't need to write your parts out in the piano roll or sonar in anyway.
matter of fact you can arrange the whole song in your alesis and then press play and record the whole performance using sonars session drummer or studio drums, or any other virtual drum software.

I used to do it this way but I finally realized sonars prv can be utilized to make much real sounding drums by editing everything in the piano roll.
heres another video about writing your parts in sonar's piano roll view:
http://www.youtube.com/watch?v=ruAnAPR6-hQ

if you have studio drums and not session drummer 3 than use this video to set it up:
http://www.youtube.com/watch?v=k83UVo1OiKA

this three part series on drum editing, triggering and midi usuage is all focused on drums. enjoy !!!
by the way session drummer or studio drums does a much better job at panning the drums because each drum has its own pan control in the GUI or the VSTI.

if you decide to use your alesis, its easy.
just hook it up midi, the pan the drums in the spectrum using the panning modules where the kit pieces are laid out on the kit.
you must and I say you must, enter the world of midi in order to accomplish drum recording using a drum machine, it will be in synch with the metro done for easy editing.
but seriously, if your doing any midi drum stuff, midi is the only way to go. if your soundcard doesn't have midi capabilitys then buy a midisport uno usb(they're like 15 to 20 bucks.
plug your drum machine into it/then usb plugs in.
good luck