Procedure

There is not an Ease file available for the KLA181. There is, however, a workaround: 

1. Add a KLA12 to the inventory.
2. Under Object Properties, change setup to "KLA AF12 to KLA181-Rear Pull Back" or KLA AF12 to KLA181-Forward Pull Back".
3. This will make the first box in the array a KLA181 by default.
4. Change your box count to "1" 

You will now have a KLA181 as your only speaker in the array.