Tuning freq for boxes...
|
Bronze Member Username: Tremor1127Post Number: 43 Registered: Aug-06 | i am building a 4.5 cubic foot box for 2 12" crossfire BMFs and i have no idea what the tuning frequency of boxes is, i change the number in the box in the link below and it just changes the way the port looks... it will be like the one in the link, 42.5 wide and no more than 14.5 tall... also, what freq should i tune this box to for these two with about 1000 watts rms to them? http://www.subwoofertools.com/forum/ported-box.asp?Ew=42.5&Eh=14.5&Dia=6&Xmax=18 .2&Vd=.071&NumW=2&Vb=4.5&Fb=32&Qts=&Vas=&Fs=&CE=0 |
|
Gold Member Username: James1115Ct Post Number: 6424 Registered: Dec-04 | 32 hz is a good tune if you want to retain most of the SQ of the driver. |
|
Bronze Member Username: Tremor1127Post Number: 44 Registered: Aug-06 | my main question though was what does the number mean... what will happen if i tune to 42 instead of 32, what happens when you go up and down... |
|
Bronze Member Username: Tremor1127Post Number: 45 Registered: Aug-06 | anyone? |
|
Silver Member Username: Scott_debakerPittsburgh, P.A. U.S.A. Post Number: 663 Registered: Feb-06 | anything over 40hz will sound sh1ty cause its 2 high but it depends on what the sub likes looks like 32hz every sub likes lol but i tune my subs @ 24hz lol |
|
Bronze Member Username: Tremor1127Post Number: 46 Registered: Aug-06 | can i get some reasons why? i know over 40 is bad, 32 is good, but WHY? |
|
Silver Member Username: John_washNashville, Tennessee Post Number: 475 Registered: Dec-05 | 40 is not reccomended often because its mostly "SPL". Its not really musically and sounds bad to the ear. |
|
Silver Member Username: AdddisorderWest palm, Florida Post Number: 641 Registered: Jan-06 | when you tune higher ever freq. over that point will be louder, and you need to set your sub sonic filter at your box tuning because when it hits lower the sub will go nuts and will get fucked up. 32 is considered good because it still hits low and most music doenst have freq. much below that. |
|
Bronze Member Username: Tremor1127Post Number: 47 Registered: Aug-06 | alright, i got it sorta, i did notice when i entered pretty high numbers the box had ALOT of port, and the lower the more of a snail it starts to look if ya know what i mean... just 2 more ?s now people... 1) where it says in that link "NET box volume" does that mean port and everything? i want each speaker to have roughly 2.25 cubic feet, so that makes it 4.5... so do i put 4.5 there or do i include all of the port, too? 2) what is the sub sonic filter? how do i tune it to my box? i think 4.5 in that space is probably good, because that is a big box... thanks guys... |
|
Bronze Member Username: Tremor1127Post Number: 48 Registered: Aug-06 | anyone, anyone? |
|
Gold Member Username: Thomas_gNM Post Number: 1553 Registered: Oct-05 | I believe NET volume is w/o the displacement of the sub or port but not sure. |
|
Silver Member Username: AdddisorderWest palm, Florida Post Number: 652 Registered: Jan-06 | sub sonic filter is on your amp and it filters out the lower freq. your supposed to set it to your box tuning |
|
Gold Member Username: Basshead86Google is your Friend, FL Post Number: 4794 Registered: Aug-05 | you don't want to set it to exactly your box's tuning...that is when the box is loudest. set it anywhere from 5-8hz under your box's tuning. that will give your sub enough protection before it will bottom out. |
|
Gold Member Username: Basshead86Google is your Friend, FL Post Number: 4795 Registered: Aug-05 | i know the SS isn't a brick wall filter either....but in a car the box actually tunes lower. so set it a bit lower than your box |
Main Forums
Today's Posts- Home Audio Forum
- Home Video Forum
- Home Theater Forum
- Car Audio Forum
- Accessories Forum
- All Forum Topics