How about using one of my patches I created for the Variax guitar as well as the POD HD500 with or without the DT amp connection.  If you use one of my Acoustic patches for the HD500 and you're L6 linked to the DT, then it WILL sound very nicely acoustic.  Even though the amp has no tweeter or horn, it still WILL sound very acoutsic, BUT the BONUS is that while still using the same signal chain with the XLR out the back of the DT amp - you will GET the Tweeter/Horn sound from the PA speakers for those harmonics and other overtones not able to be reproduced properly by a speaker only.

Why hassle with extra patches if you don't need to?

Here's the link to my list of uploads.  The POD HD500 patches start on page 3.

http://line6.com/customtone/profile/MerlinFL/

I hope this helps make things real easy for you and anyone else who might read this method of connecting gear to a PA system.

Take care,

Neal

PS - if you like it, or not, I would appreciate any feedback.  I will always help me become better at what I do with my gear and hopefully then share it with the rest of the Line 6 community.