Originally Posted by Warpdrv
OK, I'm on a quest....
I want to build the smallest possible Dual Opposed 18" Subs possible
Seaton has the Submersive, and is working on a Submersive 2 with 18" drivers.... excerpt of Submersive 2
I can live with dimensions like that in my room...
I have room for at least 3 enclosures, utilizing 6 drivers, that will be run in series or parallel at 4 ohms to make the most of my wicked amps.
What drivers can I use for this, knowing I have 4 Crest 8002 amps providing me with 4000w bridged @ 4ohms...
Obviously I don't need extreme excursion drivers.... combined excursion will be the key here, and the benefits will be a completely inert cabinet, and I don't need to integrate an onboard amp.
Help me find the perfect drivers that help me achieve my goals, upper bass reproduction is very important here for me...
how about some bms 18n850's. they work well in smaller sized enclosures.
sealed, 4-5 cubic footers per driver places the impedance peak at about 50hz. this will minimize current requirements from your amp for most music applications. pretty low qes (good magnetic damping) and high power handling (lower power compression) are other benefits. bms conservatively rates xmax, so add a bit for comparability.
if you want totally sick upper mid-bass punch, drop a couple bms 15s430's in 5 cubic footer enclosures...one sub in each corner. for some though, these are a little too tight. even though most folks say they want tight subs, sometimes a little flab, or fatness, is subjectively better.
by the way, i think you flamed me pretty hard in the past when i suggested your mains weren't up to the task of producing the kind of mid-upper bass spl for which you were looking.
can we be friends now? ;-)
on second thought, with all your maelstroms and the massive power that you have behind them, maybe all you need is a pair of ported, high efficiency, 15"s to round out your upper bass. how about placing a ported bms 15s430 (or jbl 2226h, or equivalent) alongside each of your mains.
3 cubic footers, tuned to 40-45hz, with a couple simple amps (ep2500/4000s), should blast you up into the 130's db, from around 50hz up. cross to your sick subs around 50hz or so and you should have no regrets...and no hearing...lol.