Hey guys. Situation. I have a 214liter vented Tempest and was considering adding a second. I have an extra 250w plate amp from PE I got on sale and want to put it to use. The plate amp I have now is the same thing except it is the Adire brand. I know that both have a built-in rumble at about 18hz. Now, I was thinking of ditching the 214 liter cab for two (2) 320 liter cabs, for an EBS alignment. I have been playing with Unibox and like the extra SPL in the teens. But if there are the rumble filters in place will I lose the SPL gained from the new alignment? Is it worth it? I was thinking of e-mailing Dan Wiggins direct but I don't want to intrude on him. I am sure he is very busy. And I bet someone here should know. BTW- I am finally going to get a BFD. I am so excited! Can anyone recommend what cables I should get? If so, from Parts Express. I have no idea what cable I should buy. Cannot wait til Christmas!