My current amp setup is an Eden WT400 running into an Eden D115 1x15. It is NOT the D115XLT or the D115XST, it's the older D115 without the tweeter or ports. I find the cab is not enough on its own and am looking to add a D210 to bring out a bit more in the higher frequencies. I think I remember researching this some time ago and reading on a forum that the D115 would not pair with a D210 due to wattage or impedance(?), unless I owned a World Tour head that could balance the cabs or something to that nature. I can't seem to find the discussion anywhere so I came here to get some clarity on my dilemma. So, to summarize: Can I add an Eden D210XST or D210XLT to my current setup of a WT400 and D115 (pre XLT/XST) with no issues? Thanks in advance!