Hello all, I am new to this forum as far as being a member, but I have been an audio freak/enthusiast forever (car, home theater, pretty much wherever I can mount a speaker). I have been following this interesting thread and decided that I must sign up to add my input. First of all, I would like to say that I am glad to meet all of you (I actually have spoke with Kyle on the TC Sounds forum before). I happen to have a pair of Aura 1808 18"s that I recently put the TC Sounds 5100 baskets on. I started each driver off in around a 12 cubic feet sealed enclosure (I know, I know, a little large right) with a Mackie 2600 running each at 4 ohms mono. That's a true 2600 watts to each driver all day long (the two Mackie amps are on a dedicated 30 amp circuit and then the rest of my system is on another 30 amp circuit, so no lack of juice). I was actually extremely impressed and somewhat surprised with the sound quality and SPL in my relatively small dedicated theater room (1015 cubic feet) with just sealed enclosures. I then added two VMP 18" passive radiators to each enclosure and the results are stunning. To put it bluntly, all of my neighbors either hate me or are just jealous. These things are downright scary during movies and are still suweet on music. I think something to consider with the 5100s and their upper frequency extension and efficiency is the ultra-smooth integration with the highs. Just to give some background info, I was running all M&K higher-end speakers (MPS 2510s and MPS 2525s) off of a Cinepro 3K6 amp, but I recently sold them all and switched to all pro audio speakers and amps (JBL AC28/26s across the front and JBL 8340As across the sides and back) running off QSC GX5s. With both sets of highs, these subs have integrated perfectly and have been simply breathtaking at sound quality and quantity. The bottom line here is DO NOT be discouraged by the numbers and ratings too much. The 5100s may only be rated at 1000 watts, but I have been running them on 2600 real watts for a while now and they straight up kick you in the chest and rattle the whole damn house and foundation. I have neighbors two doors down complaining that they are too loud. Also, they NEVER have a problem with over excursion, even in these supposedly too big enclosures with supposedly too much power. The ONLY problems I have are pissed off neighbors, that **** in my room sometimes sounds like it's falling apart, and that the insane bass sometimes actually invokes the fight-or-flight feelings where you want to get up and run for your life.
Just my two cents. :-)