sealed boxes

[95Prober 10+ year member]

What is the mounting depth of your speaker???
If it is less than 6" your good. 11.5 x 11.5 x 7.5 with building material of .75" would equal .35ft^3 before speaker displacment.

i got it! but lets say for example you get a result using the TOTAL number including your sub displacement, like i did, which with displacement is 0.3638 cu.ft

now is that total number, the dimensions the box is supposed to be on th outside, or is that an interior cu.ft size and you have to figure in wood later????????

 

[tRiGgEr 5,000+ posts]

i got it! but lets say for example you get a result using the TOTAL number including your sub displacement, like i did, which with displacement is 0.3638 cu.ft
now is that total number, the dimensions the box is supposed to be on th outside, or is that an interior cu.ft size and you have to figure in wood later????????

Wow that made no sence at all //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

Multiply your box's internal dimmensions. L x W x H = Box volume. Divide that by 1728 to get cubic feet. Subtract the speaker displacment. You should have a .36ft^3 box.

So lets say your speaker displaces .069 cubic feet. A box of 12.5 x 11.5 x 8.25 would work.

So internal of 11 x 10 x 6.75 = 0.43. subtract 0.069 = .36ft^3

 

[Decipha 10+ year member]

hey prober its me decipha i thought you had 4 10's ?

 

[95Prober 10+ year member]

hey prober its me decipha i thought you had 4 10's ?

hey man whats up? yeah, the 4 10's are mine. but my brother got 2 of the same series except SVC premiers, so im trying to help him. i pmed you. let me know what you think ,?? see ya!

 

[da_tank 10+ year member]

won't he need a pretty powerful amp to make up for "loss" of volume due to box being smaller than a ported box would? 'cause it should take more power to run the sub now.????

 

[95Prober 10+ year member]

won't he need a pretty powerful amp to make up for "loss" of volume due to box being smaller than a ported box would? 'cause it should take more power to run the sub now.????

yeah, never thought of that. great point. anyone ?? i think my bro wants to try the sealed AND make ported to compare. its just that when we make the sealed, we want to make it the best soundind and getting the most deep bass out of it as we can. then try ported.

 

[95Prober 10+ year member]

Pioneer usually recommends enclosures a little on the large side for better sound quality ...
If this is a 10" sub, you could go with 11.5" x 11.5" x 7.75" (external, assuming you're looking for 0.36 ft^3 gross) ...

well no Jmac , it isnt for gross, i must achieve 0.346 cu.ft after displacement. so i think ill need 0.4395 cu.ft TOTAL inside dimensions MINUS the 0.089 displacement will give me the remainder of 0.3505 cu. ft. i think its right?

these are weird dimensions INSIDE DIMENSIONS - (H 11.25 X W 10 X D 6.75), but its the CLOSEST and EXACT i can get to the 0.346 cu.ft that the T/S numbers call for. i know i dont have to be exact, but i want to just for fun and see what the sub will put out and how it will perform. of course, i know i can go a little larger. but i DONT want to until i try this way out first. these numbers are almost exact ASSUMING i go with a Qtc. of .707 i'm even going UNDER pioneers recomendation. but this is what the T/S numbers tell me with a Qtc of .707.

also , yes its for a 10" sub.

 

[95Prober 10+ year member]

Misleading bastard //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif
Anyways, I'd go with 12" x 12" x 8.5" external (10.5" x 10.5" x 7" internal) = 0.3576 ft^3 ...

yeah, sorry, that was me //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

anyway, Jmac or anyone else, what do you think about another guys post, saying that since its going REALLY SMALL , even under the pioneer recommendations, that i will need MUCH MORE power coz of the conditions the sub is in???

i read about that somewhere, but i can find where. like the smaller the box the less efficient or more amp power is needed???? something like that, but dont quote me.

 

[tRiGgEr 5,000+ posts]

yeah, sorry, that was me //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
anyway, Jmac or anyone else, what do you think about another guys post, saying that since its going REALLY SMALL , even under the pioneer recommendations, that i will need MUCH MORE power coz of the conditions the sub is in???

i read about that somewhere, but i can find where. like the smaller the box the less efficient or more amp power is needed???? something like that, but dont quote me.

Yes the speaker will want more power being in a small sealed box. Not because your going under pioneers recommendations, just because that is the nature of small sealed box's.

You don't "have" to give it more power. It will just be able to handle more power.

 

[95Prober 10+ year member]

Yes the speaker will want more power being in a small sealed box. Not because your going under pioneers recommendations, just because that is the nature of small sealed box's.
You don't "have" to give it more power. It will just be able to handle more power.

so it will be able to handle MORE power than say, if it was in a larger box?

also, is that the advantage of running a VERY small box, or is there an advantage of any type? i guess its not an advantage the sub wants more power.

also, what can i expect the bass to be like ??

 

[squeak9798 5,000+ posts]

so it will be able to handle MORE power than say, if it was in a larger box?

Mechanically, yes

also, is that the advantage of running a VERY small box, or is there an advantage of any type? i guess its not an advantage the sub wants more power.

Well, I don't know if I would call lower efficiency an "advantage". Just a side affect.

also, what can i expect the bass to be like ??

Um...like bass //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif Your car, power, installation and settings are going to determine that. Using a box with a Qtc of .707 the sub in the box will have a flat frequency response, low F3 and decent transient response and group delay. But, how it actually sounds will be install dependent. You can stick the same box with the same sub in two different cars, and it can sound totally different.

 

[95Prober 10+ year member]

"flat frequency response, low F3 and decent transient response and group delay. "

sorry from a newb, but in easier words what does this mean?

 

[DFW40 10+ year member]

http://www.bcae1.com/

live learn know this page it is the bible

 

[95Prober 10+ year member]

http://www.bcae1.com/
live learn know this page it is the bible

well, i know that site. just i want to know in guys on these forums terms.

 

[squeak9798 5,000+ posts]

"flat frequency response, low F3 and decent transient response and group delay. "
sorry from a newb, but in easier words what does this mean?

Good sound quality and good low frequency extension.

But, like I said; that's simply the box's affect on the subwoofer. How it actually sounds will be vehicle/setup dependent.