Question Bout WoOfer BoxeS...

[aj_supra]

is the woofer boxes will affect da sub performance??
i'm now got 2 12" sub-boxes but i dunno which is better..

One got a small hole on it tat can get through into the boxes and d other is only da hole for sub but got lots of sponge inside it which da previous one din have.. so.. which box is nicer???

 

[rodneyk]

is the woofer boxes will affect da sub performance??
i'm now got 2 12" sub-boxes but i dunno which is better..

One got a small hole on it tat can get through into the boxes and d other is only da hole for sub but got lots of sponge inside it which da previous one din have.. so.. which box is nicer???

depends what you want to play
you want more boom then go for the one with a small hole

you wanna play more solid bass for SQ then go for the one with the sponge. The sponge is meant to let your sub thinks the box is slightly bigger so the sound is better. :)

I am using the one without the hole. Sealed box I call it. But instead of using sponge I am using the aquarium filter to fill the inside up to 4-5 layers thick. Too thick isnt good and too thin also isnt good
:)

 

[e1fnd]

Sorry to kacau thread

Just want to check rite... If I have a 10" sub.. meaning I would get and produce better SQ if I put in the aquarium filter thingy?

 

[Master D]

Hi,

Basically it depends on the box you have for your sub as well as the amount of power you have to drive the sub. When the box is sealed, the smaller the box the more power you need to drive it. In general, the smaller the box the tighter the bass. But, due to the two variables of power and enclosure size, the aquarium filter/sponge/polyfill is used only when you feel that maybe the sub is not going low enough or that its not accurate enough.But putting it in, it create an environment where the box would seem smaller. This then attempts to rectify the tone of the sub. Polyfill will by no means help a lot when you are underpowering the sub.

The use of the polyfill is a means of fine tuning, but if your initial constraints of power and enclosure size are too drastic, the polyfill wont help.

Hope this explains. :)

 

[appleyard]

Just want to check rite... If I have a 10" sub.. meaning I would get and produce better SQ if I put in the aquarium filter thingy?

those polyfill act as the subs may think that they are in a gigger enclosure. The good thing is that your sub may able to play low in a small sealed box. But in reality, it only helps a little.

supra

built a ported box, 4 cu. ft., port tuning to 30hz and you will get SQ and SPL. Sealed enclosure doesnt meant for SQ only. Ported box have more efficientcy and also can play lower than sealed.

i dont know what do you want to achieve but for a box that looks nice wont sound nice. you may check a thread that i post about ported vs sealed.

 

[aj_supra]

thanks for all those comment pal..

 

[yobha]

Hi

But remember not all sub could play low.

 

[appleyard]

But remember not all sub could play low.

most subs nowdays can play low. With 30hz should be no problem for all subs that i know of. but if you say low means 20hz or lower, it depends on the application.

 

[rodneyk]

most subs nowdays can play low. With 30hz should be no problem for all subs that i know of. but if you say low means 20hz or lower, it depends on the application.

20hz or lower?????
can our hearing even hear that low?
I thought the lowest note in an orchestra would be about 30hz only?
why want a sub to play that low when you won't be making use of it most of the time or might not even play a note that low in like months.

 

[calvinhpk]

a low bass note...like 30Hz and below....makes your car shake... hehehe.... it's a nice feeling....

 

[appleyard]

dont be surprise HT subs plays 18 - 25 hz. Where in car it wont make a difference. Below 30hz is just rumble.

But bear in mind the lower you go the less SPL you can achieve.

 

[Kippo]

is the woofer boxes will affect da sub performance??
i'm now got 2 12" sub-boxes but i dunno which is better..

One got a small hole on it tat can get through into the boxes and d other is only da hole for sub but got lots of sponge inside it which da previous one din have.. so.. which box is nicer???

a sub box/enclosure will make or break the sub's performance.

since you do not have details of your subs and boxes measurements, just try p[utting your sub in both boxes and see which one you like.

 

[Kippo]

you feel low sub-bass note rather than really hear them (those sub 20hz).

 

[yobha]

Hi

most subs nowdays can play low. With 30hz should be no problem for all subs that i know of. but if you say low means 20hz or lower, it depends on the application.

Those spl subbie could not play low but only loud, this is what i mean, there is a formula to calculate which sub is for sq n spl, last time ah siang from megasound teach me but forget liao :D

 

[g88]

the one with holes is call ported box and no holes is call seal box.

Seal box need more power to "move" the sub in order for you to heard the "sound"

SQ will go for seal box. SPL (blast type) will go for ported box.

But if you know how to tune , a ported box will sound nicer then seal box..i heard this from a true ICE sifu but it's VERY hard to do the tuning for ported box.

Correct me if i am wrong....

 

[Kippo]

a sub put in a low tuned ported box will definetly sound better than sealed box with high Qtc.

it is not hard to do tuning for ported box. Just use any simulation software for speaker and model the response that you like. Then find what is the port tuning and calculate the port dimension.

say you like this sealed box sub response but you want it to play louder and lower. Plot that in eg. WinISD and then plot that sub in ported box response. Play around with the port tuning freq. until it either 'similar' with the sealed box response curve or make it go lower.

to play loud i.e SPL, find your car resonance freq. and tune your ported box near (lower or more) your car resonance freq. Make your port area big (at least 50 Sq.inch for 15" sub as air in the port is like a piston. The bigger the betta) and make your box big (so that your sub becomes efficient hence betta with the limited power you have).

nothing difficult here. No need formula here. Just let the software do that for you.

 

[bem69]

How much does a decent enclosure cost for a 12" sub? Sorry budget conscious newbie here. Any recommendations for places that make good enclosures?

 

[rodneyk]

the price depends on the quality of the box as well
:)
i am not sure bout the exact price
so i shall let some other sifus to explain k?

 

[appleyard]

How much does a decent enclosure cost for a 12" sub? Sorry budget conscious newbie here. Any recommendations for places that make good enclosures?

may cost RM150 - RM250. But DIY it may cost much less.

 

[energie]

I know this thread is kinda old, but what installer tells you one spl sub can only play loud but not low?? Errr can calculate which woofer better for SQ or SPL?? I dunno abt Megasound but I know one Acoustic Edge from Pg doing 158+ db using two Adire Tempest in 13+ cubic feet ( dual chambered ) bandpass using the new JBL Crown. This setup rocks & believe me when I tell you it is LOUD & LOW. Rodney, I tell you why some ppl would want anything below 30hz, it simply coz it is awesome. If you have a really powerful setup, anything below 30hz will rock you like a mofo, gives you an adrenaline rush, something similar to base jumping if you know what I mean. It's something us bass junkies feed on to get " high " ;)