hi, I'm wanting to add an AMPEG SVT-15E to my current (all Ampeg) set up which consists of an SVT-3PRO amp (which o/ps 450 watts at 4ohms) and an SVT-410HE 4X10 cab (8ohm). I like to play loud and crank the amp close to max volume. I love the sounds I'm getting from my SVT-410HE but want more bottom end. However I am a bit confused about 'Program Handling' and 'RMS handling' of the cabs. Now the specs of the amp claim that the amp should split 275 Watts to each 8 ohm speaker cab when connected in parallel. The 8ohm 4X10 cab has a 'Program Handling' of 1000W but 'RMS Handling' of 500W. It seems and is safe to use. The SVT-15E has 'Program Handling' of 400W but 'RMS Handling' of 200W. Which rating applies with relation to the Output of the amp, the 'Program Handling' or 'RMS Handling'? in relation to the SVT-15E, 200W 'RMS Handling' seems too low for the output of the amp however 400W 'Program Handling' would seem to fit the bill. Basically I want to know if it will be safe to run the amp throuhg the SVT-15E as I don't want to be blowing my new cab. If it is unsafe to use the SVT-15E can anyone recommend an alternative? Should I go for a different brand perhaps. Does any one know of any 8ohm 18" subs or larger?