is .25 cu. ft. too big ok for a 12 inch sealed?

[Triticum Agricolam]

i went ahead and built another enclosure that is 1.05 cubic feet after displacement so its .20 cu ft smaller than recommended..i picked up a 16 ounce bag of poly fil from walmart for damn 3.45$...do i just put it all in the box and call it a day?

Yeah, put it all in.

Honestly with sealed boxes you are never going to hear the difference between a 1.05, 1.25, and 1.5 cu ft box. If I had to pick between the three, I would have stuck with the largest box.

[Facekicker]

I strongly disagree, power becomes a factor but even power considerations aside you're talking about a ~20% variance. It has an effect, whether it changes peak SPL or peak frequency or anything else is situational. But saying 3 sealed boxes each 15% larger than the previous will behave the same as each other is wrong.

[Facekicker]

Also OP yes, I've read quite a bit about it today and things are leaning towards a completely filled enclosure, loosely filled. Partially filling or only lining walls seems to be placebo only.

[Triticum Agricolam]

I strongly disagree, power becomes a factor but even power considerations aside you're talking about a ~20% variance. It has an effect, whether it changes peak SPL or peak frequency or anything else is situational. But saying 3 sealed boxes each 15% larger than the previous will behave the same as each other is wrong.

I never said they are going to behave the same, I know that they won't, what I said is you would never hear the difference, and I'm sticking with that.

At 30 Hz the largest of the three boxes is only going to have about 1.5 db more output then the smallest of the three. You can't hear a 1.5 db difference. Above 30 Hz the difference in output only decreases.

[TDZ13]

Personally would have just stuck with the 1.5ft3 sealed you have because of the power level you're running at.. As far as the polyfil, use all of it and just scatter it loosely throughout the box.

[BoomZoom808]

It's fine in 1.5 cu on that power

[dharris2488]

I'm surprised no one mentioned that the response on the larger box should be slightly flatter. When going sealed, I always like to build slightly bigger, as it seems to become a bit more musical and rich sounding. Now, there's a point where you go too big, but in OP's case, I don't think .25 will hurt a thing. I actually would bet on it making it sound better with only 300 watts going to it. Like others said, you could always add a 2x4 in there somewhere to eliminate some space... Stay bigger my friend. I bet you like the response more, unless you are going for tight, punchy type bass with no lows, or should I say, weak low's... Just my 2 cents for what it worth.