Dayton RSS460HO-4 18" Sealed Build

I'm thinking of doing a sealed 18" build with the Dayton 18" HO. I want to use either the iNuke 1000 with dsp or the Crown XLS1000.

My only concern is low end output from using a sealed enclosure. I want the in-room response to be fairly flat down to 15hz or so (or as low as possibly really).

Looking at the article about this sealed 18" setup on Data-Bass has me very impressed. I'd basically go with the same configuration as I'd aim for a 4.2 cubic foot to 4.5 cubic foot build. I see the output below 20Hz is very strong, i'm just not sure how it would perform once I place this thing in my room.

I know there may be some natural room gain around 25Hz or so and down, just I don't know how much, or if it would leave me with satisfying output at these lower frequencies.

Can someone with experience with large sealed subs help me out here? Do you think this sealed 18" build will provide satisfying low end frequencies? (Satisfying relative to what i'm using now, a Bic F12 that goes to sleep below 27Hz). Also, will I be able to eq a fairly flat response down to the lower frequencies with the on board eq'ing systems of the amps I mentioned?

Room size is about 2200 cubic foot. I'm not looking to pressurize this space too much, as my downstairs neighbors may not like it. I just want clean, super deep bass. When I get a house in the next few years or so I have full intentions of going with a multi-sub setup with tons of spl. Also I agree that the xmax is very conservative from everything I've read on it. Many people seem to say 20mm is more realistic.

The ep4000 appears to cost a bit more then I'm wanting to spend right now. And the added power may be nice, but will only tempt me.

I'm currently running my Bic F12 very lightly. I can't imagine I ever let it get beyond 90db on the loudest LFE tracks I play on it. At most I can feel very faint vibrations in my floor a few feet away with ~30Hz LFE. This is while running my receiver at -28 or so on the volume.

So do you think a this sub in a sealed 4.0 cubic ft box will provide me with adequate bass on down to around 16Hz?

Thanks for the offer ChopShop, but I'm probably a couple of layovers away from CT.

I'm leaning more towards the Crown amp as It's quieter. Is this a good idea or should I go with the iNuke and simply do the fan mod to quieten it down?

Thanks for the help guys. I'm more confident now that I'll be satisfied(hopefully for a while at least) with this new sub.

My next task is figuring out if my Denon 791 has enough juice from the LFE out to feed the pro amp.

Well guys. I built the enclosure this past weekend and ordered the driver, amp, and a few remaining items last night. Should put it all together soon hopefully.

I ended up building a 4.6 cubic ft enclosure with minimal bracing. I want to hear what it sounds like with this minimal bracing and possibly compare it to having more bracing. I plan to fight resonances with pillows. And I can't imagine the 3/4" birch ply actually flexing from internal pressures, as it didn't budge with me pushing my knee into the panel. (Figured my knee simulated about 80psi or so, can't imagine a I will get anywhere near that sort of pressure from the sub)

The size of this thing is..awesomely huge. Especially compared to my Bic F12. I could almost put my F12 through the cutout.

Now I just need to wait for the rest of the items I ordered..

Haha. I will have to wait until later to put more pics. But here is the product so far. I still have to round some edges out a bit for the cutout, but for the most part i'm ready to see how it sounds.

As for bracing, I mostly just want to see if I can see actual improvements from added bracing. Just to get a better understanding of the "why". I have a very small amount of bracing right now as you can see.

I'm sure I could benefit from some more bracing. Just I don't know what I'll will benefit as I have no experience with a poorly braced enclosure vs. a properly braced one. I have plenty of scrap wood and can easily add the bracing, but I want to see the benefit of bracing in practical application rather than just theory alone.

I also understand that my internal volume will be reduced with more bracing also, so I'm for more bracing in terms of xmax.

In the event that I do add bracing (which will happen), how should I go about this? The 8" spacing between bracing rule?

Ok, cool. What audible difference would the bracing make? Would there be a difference between using only the red brace vs. using all braces pictured?

I guess I mistook reflections for resonances in terms of damping. I just know that sticking my head into the box and talking creates alot of reflective sound. Quite unpleasent to hear. I'm only assuming the pillows would help with the reflections. (I could be completely off base with this entire sentence here.)

Also, I've read that bracing is used for distortion control, is this correct?

What would be a more appropriate size then? Is 3.8 to 4.0 still recommended? I don't think I'd have any trouble reducing the volume when adding bracing. But again I don't plan on pushing this thing anywhere close to xmax. But I should rather be safe than sorry.

"Enough" is a relative term here. It may not be enough for you but I'm sure it would be enough for me. At least for now. And I don't think anyone enjoys losing money reselling used gear. (Did I detect condescension? lol)

I could easily buy the 3000dsp now, but I would never be able to put it to use. Well I could, just not for long. lol. Downstairs neighbors may not appreciate it.