Originally Posted by SqeeksMcGee
If you are interested in doing some reading, data-bass.com is a fantastic resource when researching subs. The JTR lineup tops the list in a few categories, and sounds like a great fit. They also have a lot of information on individual drivers if you plan on going the DIY route.
Yes, but keep in mind most of the data-bass measured DIY subs where sealed and single 18's.
The JTR is a dual 18 ported sub. Not exactly a fair comparison.
Put 2 RE-18's or RF-19's or HS-24's or even HST-18's in a ported box tuned to 10hz and it will match or beat the JTR 4k with ease... heck even 4 ported UM-18's + 2 NX6kDSP's could probably do it.
FYI the SI SHS-24 is on sale right now, that's a hella bargin considering it's normal price.
If you need more power than a nx6k, the FP20k amp is a lot more powerful: 16kW burst CEA-2010, 8kW RMS. For <$800. (120v 60a or 240v 30a.)
The FP20k can power about 16 UM-18's and melt 8 UM-18's, all in 2RU and very cheaply. No warranty though. If you want the real-deal the Gruppen PLM is the price you'll pay.
If you want a good USA-made amplifier with a warranty, SpeakerPower is the one you want to buy. That's the amp that powers subs like the JTR and DeepSea.
If DIY is too much work, then by all means the JTR 4k is the next best thing.
If you want to "get loud" cheaply, without going DIY... multiple Mackie Thump 18's will get you there, a pair will do 136db @ 1m:
Keep in mind that 90% of movies and 95% of music is >30hz. Top40/rap/dance/metal/rock/country/U571 explosions, thunder etc.
Pretty much everything except: pipe organs, helicopter blades, earthquakes and BassILoveU (6hz+17hz+30hz).
Chest-kick is in the 50-300hz mid-bass range, not the <30hz ULF range.
Rock concerts and dance clubs are all >30hz, and you can feel it. They use subs like Mackie, JBL, Yorkville, Peavey, Behringer etc.
The cops will shoot first, and ask questions later.