Big Or Small

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91blaze

Member - Posts: 27

Joined: May 02, 2002

Location: United States

Posted: October 20, 2002 at 1:34 PM / IP Logged

i searched and couldnt find any answers so here it is. what will produce more spl: a small sealed box or a large sealed box? and please list why. im in a forum argument over this topic. thanks for you replies.

Velocity Motors

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Joined: March 08, 2002

Location: Manitoba, Canada

Posted: October 20, 2002 at 4:10 PM / IP Logged

The box size and SPL is dependent on the subwoofer being used. Some subwoofers require a small enclosure to perform to it's optimum SPL while other's require a larger enclosure. Most of the time if you wish for SPL you do not use a sealed enclosure as this type of enclosure robs 3 bd from your system. For arguments sake I would not choose neither because both enclosures do not produce good SPL Big Or Small - Last Post -- posted image. .

Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

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TheRapture

Copper - Posts: 208

Joined: July 07, 2002

Location: United States

Posted: October 21, 2002 at 1:14 PM / IP Logged

exactly... a selaed box is made for sound quality not SPL... you'll of course want to go with a ported box for any type of SPL. and when using a ported box usually the larger the box tuned to a higher frequency (maybe 48hz) will produce more SPL.

91blaze

Member - Posts: 27

Joined: May 02, 2002

Location: United States

Posted: October 21, 2002 at 2:44 PM / IP Logged

im only refering to sealed boxes.

TheRapture

Copper - Posts: 208

Joined: July 07, 2002

Location: United States

Posted: October 21, 2002 at 3:00 PM / IP Logged

your question is as follows... it's like blowing up a ballon, sealing the end of it... and expecting it to blow air out.... but out of what seeing as though the end is sealed?

is this a riddle? damn well better not be! haaaahahhaa

NyxBass

Silver - Posts: 226

Joined: March 14, 2002

Location: United States

Posted: October 21, 2002 at 5:02 PM / IP Logged

For the sake of what you're asking, generally a smaller sealed box can be louder. Why? A smaller box will be tuned higher, allowing the speaker to be pushed harder (less air = more acoustic suspension). But, the trade off is a much more "peaky" response (not as flat). It all really does depend on the speaker involved, but a smaller box generally has the possibility of a higher SPL.

/NyxBass

Aw1208q

Copper - Posts: 42

Joined: August 06, 2002

Location: United States

Posted: October 22, 2002 at 9:22 AM / IP Logged

SPL stands for sound pressure level. which you will not get out of a sealed box. you want to move as much air as possible into the cab of the car/truck/van, to do that you have to have a ported box. sealed boxes are for SQ not SPL.

91blaze

Member - Posts: 27

Joined: May 02, 2002

Location: United States

Posted: October 22, 2002 at 9:26 AM / IP Logged

Quote: Originally posted by AW1208Q on October 22, 2002

did you not read this whole thread? i think we all know what spl stands for. the ported box being louder has already been discussed. you dont HAVE to have a ported box to get an spl reading. the question was: which is louder big sealed or small sealed?

Velocity Motors

Moderator - Posts: 12,488

Joined: March 08, 2002

Location: Manitoba, Canada

Posted: October 22, 2002 at 9:44 AM / IP Logged

Hey 91blaze, another thing that I thought about to add to your side of the argument is that a larger sealed box would NOT have a higher SPL because the sub would bottom out sooner than that of a smaller enclosure because it would not be able to go down as low in frequency. A good example is yelling into a large room compared to yelling into closet. The larger room will have time for the frequency to mature, but no SPL.

Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

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Big Or Small

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