I've got two 411s,both in cabinets.One is(supposed to be)an Altec cabinet,the other a 'road case' stage type box with speakon connector.

They will be used below 70Hz via an active crossover.I read somewhere that the 411s require an amp with a high damping factor,so a pair of Kenwood L08Ms will be driving the 411s actively.I want the subs in the same listening plane as the mains will be on(about 6 feet from the rear boundary and 3 feet from the side walls).Room size 20 feet by 38.

I like what GM is saying about the 411s,as subs.If I was to have cabinets for these custom made,given my system and room,would there be a decent set of cabinet plans for these anywhere?Cabinet size is not a problem.I'm single and live alone.All interior design considerations are based upon the listening system,not vice versa.