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View Full Version : 40hz box playing 35hz?



jeremiah
03-28-2007, 04:01 PM
I am going to make this box http://www.subwoofertools.com/forum/ported-box.asp?Ew=29&Eh=14&Dia=6&Xmax=15&Vd=0.23&NumW=1&Vb=3&Fb=40&Qts=&Vas=&Fs=&CE=0
if I play a song like young jeezy hypnotized wich is 35hz >http://www.caraudiojunkyard.com/forum/songlist.php?do=getall&page=4&order=asc&sort=artist
how many db's will I lose at 35hz

Twistid
03-28-2007, 04:12 PM
you might cause the sub to reach mechanical limits which may damage it

jeremiah
03-28-2007, 04:31 PM
you might cause the sub to reach mechanical limits which may damage it
? at 35hz? . I se guys with boxes that are tuned to 48hz and play a song
like jeezy the snowman (39hz) at full tilt?

blackbonnie
03-28-2007, 04:45 PM
you might hurt your sub big time, it all depends on how strong your sub is i guess you could say in simple terms, and they are prolly playing it full tilt with a subsonic filter on, so you dont notice it, and it actually doesnt reach 39hz

jeremiah
03-28-2007, 05:05 PM
you might hurt your sub big time, it all depends on how strong your sub is i guess you could say in simple terms, and they are prolly playing it full tilt with a subsonic filter on, so you dont notice it, and it actually doesnt reach 39hz


I dont have a adjustable ssf but in my 2cu.ft box tuned to 33hz I can play a 20hz
tun and the sub is fine ?

fwb_1234
03-28-2007, 05:06 PM
Tune it lower. This is imp. esp if you are already putting the recommended or higher power to the sub. Of course, if you are putting 200W on a 2000W sub I wouldn't worry about damaging the sub.
The SPL (if thats what you are going for) loss at the upper end in a diff. box won't be near as noticeable as the drop on the lower end if you keep this design.

jmanpc
03-28-2007, 05:06 PM
Just watch the volume knob and you'll be okay.

Immacomputer
03-28-2007, 07:49 PM
you might cause the sub to reach mechanical limits which may damage it

Really doubtful with any sub. At 35hz, the port will still be functional at controlling cone motion. It won't be as in control as it was at tuning but cone movement will still be significantly reduced. I have a ghetto *** sub with really soft suspension that can play 25hz full tilt in an enclosure tuned to 32hz and it's cone is still very controlled.

ballstothewall
03-28-2007, 08:12 PM
Can't ported boxes play down a 1/2 octave below tuning freq without unloading the sub?

Lakota
03-28-2007, 08:55 PM
I've played below tuning many times and the sub handled it fine...

jeremiah
03-28-2007, 11:22 PM
Can't ported boxes play down a 1/2 octave below tuning freq without unloading the sub?

what is that?

Worlddre
03-28-2007, 11:26 PM
Can't ported boxes play down a 1/2 octave below tuning freq without unloading the sub?
yes sir you are correct ported enclosures are good half an octave below the tuning frequency before you lose all cone control

what is that?

an octave is the point at which a frequency doubles (40hz-80hz-160hz) <--- 2 octaves...so if you are tuned at 40 hz in theory you should be just fine down to or around 30hz

Skip01
03-28-2007, 11:45 PM
Depends on what sub to...some like playing below tuning some peak off pretty nasty.....and are u referring to SPLBEAST's 48hz box playin Jeezy the Snowman in his vid....it really plays low pretty decently...but he tore his surround...to much watts..hehe...but give it a shot

Look at Prochobo's box tuned to 40hz and playin Hypnotize in his vid nicely

Immacomputer
03-28-2007, 11:53 PM
A nice stiff suspension will help keep things under control as most of the pressure in the enclosure has been lost when you start heading too far below tuning. Output will start to drop off as well but not all subs will be completely useless below tuning.

jeremiah
03-28-2007, 11:54 PM
Depends on what sub to...some like playing below tuning some peak off pretty nasty.....and are u referring to SPLBEAST's 48hz box playin Jeezy the Snowman in his vid....it really plays low pretty decently...but he tore his surround...to much watts..hehe...but give it a shot

Look at Prochobo's box tuned to 40hz and playin Hypnotize in his vid nicely


yes....so I will still be able to play jeezy/UNK/jibbs

Skip01
03-29-2007, 12:15 AM
yes....so I will still be able to play jeezy/UNK/jibbs

I would say soo

This is the other vid i was talkin about tuned to 40hz..playin the first 2 you mentioned:

http://youtube.com/watch?v=ZH05RELAA38

Its what ill be tuning my next daily box to

jeremiah
03-29-2007, 12:30 AM
I would say soo

This is the other vid i was talkin about tuned to 40hz..playin the first 2 you mentioned:

http://youtube.com/watch?v=ZH05RELAA38

Its what ill be tuning my next daily box to

what are your subs :fro:

Pyro_By_Nature
03-29-2007, 12:44 AM
Not sure about the other stuff, but most of jeezy's stuff is in the 40's or higher 30's, so you should be alright as long as you don't try to play soul survivor lol.

jeremiah
03-29-2007, 12:56 AM
I would say soo

This is the other vid i was talkin about tuned to 40hz..playin the first 2 you mentioned:

http://youtube.com/watch?v=ZH05RELAA38

Its what ill be tuning my next daily box to


O my bad (DSL:verymad: ) it's a 15" HD3:yumyum:

Skip01
03-29-2007, 01:08 AM
O my bad (DSL:verymad: ) it's a 15" HD3:yumyum:

Thats not mine though...just showin u that he was tuned to 40hz..and playin the low songs just fine:naughty:

jeremiah
03-29-2007, 04:37 PM
will it's just that SPLBEAST's box is 48hz and he did 150db at 39hz? so that's why
Isade how many db's will I lose at 35/30hz? ......
what would he do at 50hz?