5.25" neo sub box ?

[sqhertz 5,000+ posts]

welp , i finally ordered it because they went on sale for $19 a pop ( http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-831 )and so did the 25w plate amp. i know some will say its pointless but this will be for a computer system and i dont need it to be loud as piss because it will be right infront of me.

now , what size box should i throw it in? .2 cuft sealed? or should i go ported? the sat.s it will be paired with play down under 100hz but roll off around 120? or so. i have not measured that , but that is my rough estimate. i would like it to be fairly flat , some peaks are fine but not too much.

construction will be done in .5" mdf with the same finish as the satilites (see avatar).

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[BrianChia 10+ year member]

I'd go ported, about 0.6 cf tuning around 34-36hz. This should give fairly flat response from the low 30's on up. If you want a slight boost you can tune as high as 40hz, giving up some low end performance. If you want more extension you can probably tune as low as 30-32hz. I'd get an adjustable tube port so you could play around with the tuning.

 

[sqhertz 5,000+ posts]

well for now , i was planning on a slot port because im , well , broke. and i already placed my order.

it will be mainly for music , but rarely , ill hook it up to the TV and watch a movie or play xbox. i think the 30-32hz should do me well. i just dont want it to overpower the sats being ported.

playing around with the subwoofertools program , it gives me this huge *** box that i dont really want. this will probably end up under the desk and i like the foot space.

whats your thoughts on a sealed enclosure?

 

[desertheat 10+ year member]

Wow they exactly copied aurasounds new mini subs, cone & all except they cost 1/4th of the aura subs price haha.

 

[Atimm693 10+ year member]

well for now , i was planning on a slot port because im , well , broke. and i already placed my order.it will be mainly for music , but rarely , ill hook it up to the TV and watch a movie or play xbox. i think the 30-32hz should do me well. i just dont want it to overpower the sats being ported.

playing around with the subwoofertools program , it gives me this huge *** box that i dont really want. this will probably end up under the desk and i like the foot space.

whats your thoughts on a sealed enclosure?

You could have brian design you a box, im not that experienced with HT so i dont think i could do it.

 

[sqhertz 5,000+ posts]

You could have brian design you a box, im not that experienced with HT so i dont think i could do it.

i could , but probably at a cost. im broke at the moment. i think i may just go sealed. something betweem .2 and .4 cuft.

 

[BrianChia 10+ year member]

Your program must be flawed or it may have a mistyped T/S parameter. I modeled it in WinISD with the numbers I gave you and it looks good. If you go with 30-32hz, go slightly bigger -- maybe .7 or 0.8 cf.

I think you will like a ported box much better for this sub.

 

[ultimate157 5,000+ posts]

Wow they exactly copied aurasounds new mini subs, cone & all except they cost 1/4th of the aura subs price haha.

Link? The TB has been around for a while

 

[BrianChia 10+ year member]

Link? The TB has been around for a while

Yep, these woofers (TB) are not new at all. And I have not seen the new Aurasounds yet, although I am interested.

 

[sqhertz 5,000+ posts]

Your program must be flawed or it may have a mistyped T/S parameter. I modeled it in WinISD with the numbers I gave you and it looks good. If you go with 30-32hz, go slightly bigger -- maybe .7 or 0.8 cf.
I think you will like a ported box much better for this sub.

ill play around with it tomorrow.

how would the upper end extension be? and its 12-16 sqin of port per 1 cuft , correct?

 

[BrianChia 10+ year member]

Ideally, but the port gets long with such a small box. You can get by with a little less than that since its a small sub on 25W and you won't be moving that much air.

 

[sqhertz 5,000+ posts]

this is the program im using. it assumes the cuts will be from .75" mdf , but ill be using both .5" and .75". whatever i have left from previous boxes.

.6 @ 32 - http://www.subwoofertools.com/forum/ported-box.asp?Ew=15&Eh=10&Dia=1&Xmax=9.5&Vd=.03&NumW=1&Vb=.6&Fb=32&Qts=&Vas=&Fs=&CE=0

like you said , itll give me alot of port length, which i dont really want for ease of construction. im still trying to get it to give me a L shaped port.

 

[sqhertz 5,000+ posts]

ill just go for a sealed box. i got enough scrap mdf to play around with for now.

10"w x 8"h x 10"d will give me .32cuft before displacement, that too big?

8 x 8 x 10 would be .255cuft...

 

[sqhertz 5,000+ posts]

ima shoot for the .32 cuft. if anything i can add scraps in there to take up volume if i needed to go smaller.

im starting the cuts now...

 

[sqhertz 5,000+ posts]

well , the sub and amp came in today. i love PE.

box is being built as i post. should have a first impression review by tomorrow.