SEALED vs PORTED (basic info.)

[BASS OUTLAW]

Now we will start with :

Sealed enclosures : A SEALED enclosure will be the smallest,and is the simplest of enclosures and will have good low frequency extension, but might not have the best low frequency extension. If space is limited.

and its a good choice for SQ fans (Sound Quality).

PORTED enclosures (Bass Reflex) : A PORTED enclosure will generally have a better low frequency extension for a given response shape,but would require a larger enclosure. If you made the enclosure as small as the sealed enclosure, but ported it to gain the low frequency response, the output would deviate from the desired flat response.

Ported enclosures are slightly more difficult to design than a sealed enclosure. When using a sealed enclosure, it is difficult to be so far off as to risk damaging the woofers. In any type of enclosure, the woofer relies on the enclosure for damping. If there is insufficient damping, the woofer's cone will move significantly more than it should. The ported box will provide virtually no damping below the port frequency, all of the control will be provided by the woofer's suspension. Below the tuning (port) frequency, it is possible to cause damage to the woofer well before power levels approach the maximum power ratings of the woofer.

common tunning frequencies :

Sound Quality : 20 up to 28 Hz.

Sound Quality Loudness : 30 up to 35 Hz

Sound Pressure LeveL SPL : 40 up to 80 Hz (test tones are played rather than normal music, to avoid Low frequencies, which damages the speaker).

Its commonly used for competition propose. and not everyday driving.(unless you like listening to test tones for everyday driving).

BandPass enclosures (Single Reflex): Bandpass enclosure can sound good and give you a flat response,but most of the bandpass enclosures(in the market), are not designed for a flat response, this means that they are built to produce a large peak at some frequency from 50 to 60 Hz, these enclosures will work well with Rap, but generally they dont sound good with other types of music.

if u use a banpass enclosure. it should be designed specificaly for your speaker.

P.S : its not always recommended.

hope that this info will help many to understand the different types of enclosures.and which type will perform better for their propose.

-zAK

 

[massivespl]

IM GOING FROM MAKING A BUNCH OF DIFFERENT BOXES IVE BUILT AND SEEN AND WHAT NOT , IVE BEEN BUILDING SUB BOXES FOR 11 NOW AND AS FAR AS IM CONCERNED EVERYBODY IS TRYING TO BE TO SPIFFY AND TECHNO ABOUT IT.. ALL THESE (( SMD )) AMP TESTER THINGS ARE NOT NEEDED FOR ANYBODY WHOS HOOKED UP SYSTEMS. AS FAR AS BOXES. SEALED VS PORTED. SEALED BOXES SLAM.... AND U CAN TUNED A SEALED BOX, U DO IT BY MAKING IT LARGER AND DEEPER.. A REGULAR PORTED BOX (( NOT BANDPASS)) SHOULD BE TUNED NO HIGHER THAN 40 HERTZ. I TUNE MY BOXES TO 33 OR 28 HERTZ 90 PERCENT OF THE TIME. BANDBASS BOXES U CAN TUNE A LITTLE HIGHER.... THE PROBLEM IS WITH PORTED BOXES IS NOT JUST THE BOXES IT SELF BUT THE INFO AROUND IT, WHAT I MEAN BY THAT IS PEOPLE THINK TO MUCH ABOUT A REGULAR PORTED ENCLOSURE. THE WHOLE POINT OF A CUSTOM SUBWOOFER BOX IS TO REPRODUCE THAT (( LOUD DEEP BASS )) TO DO THAT U MUST TUNE THE BOX LOW. EVERYBODY HAS THERE OWN REASONS AND WHAT NOT BUT I CAN ASURE YOU THAT IF YOU MADE A SEALED BOX AND U PUT 2 12Z INSIDE AND IT WAS 3.4CFT AND THEN U MADE A PORTED BOX THAT WAS 40HERTZ AND IT WAS 4CFT. THE PORTED BOX WOULDNT BE AS LOUD TO THE EAR AND IT WOULDNT HAVE THAT DEEP BASS . BUT BECAUSE THATS A MEDUIM SIZE SEALED BOX IT WILL WANT TO CAPUTURE LOWER BASS. U HAVE TO WATCH OUT FRO MAKING A SEALED BOX TO BIG BECAUSE ULL TEAR THE SPIDERS ON UR SUB. I CAN ASSURE YOU THAT A LARGE SEALED BOX WITH A PAIR OF 15S INSIDE WILL CHANGE UR MIND ABOUT SEALED BOXES. IF YOUR MAKING A BOX FOR A SUV U CAN TUNE IT HIGHER, BUT IN SMALLER CARS U GOTTA TUNE IT LOW. ANOTHER THING IS THAT PEOPLE DONT UNDERSTAND IS THAT MOST OF THE TIME THE BIGGER THE BOX ,THE MORE LOUD AND POWERFULL BASS.. IE i had 2 re 15s one box was around 7-8 cft and then i made a big *** one and it was 17.5cft after everything and tuned to 28 hertz and the bigger box was 2x as loud... same subs and same amps. ....................IVE BLOWN SUBS, IVE BUILT TONS OF BOXES AND I KNOW WHAT WORKS................

Lol u think u know what your doing but by that ^ paragraph u don't know what u are talking about. I bet 2 12s in a 4c ported box will be louder then 2 12a in a 3.4cubed sealed box. All depends on the woofers and power used.

 

[sonicknuckles49]

im going by just in general my man. and i know it will be because i tryed a few types of speakers lol

 

[av83]

Wut?

 

[sonicknuckles49]

im talking about just a regular system. 2 12s on lets say 2000 watts using americnbass xfl 12. inside a chevy blazer and using a audi a4

 

[negolien]

Being louder isn't always all that. I heard some beast systems that are so loud they just sound like ****. How fkin loud do you really need to be and still be able to listen to it?

 

[mrpep]

I tend to think that a properly designed ported box will hit lower and have flatter response than that of a sealed. I don't really like sealed boxes much except in tight spaces and ultra ultra high SQ installs like adding extension to a BMW or Mercedes.... in those cases I like to find a great SQ driver and put it in a pretty decently sized sealed box for the sake of OEM look and a non "boomy" sound no matter what.

I have 2 JL 12"S w6v3 in 4 cubes tuned to 34hz and it sounds good but would my sound quality improve if I sealed the port? Or is 4 cubes too big for a sealed ?

 

[adulbrich]

I have 2 JL 12"S w6v3 in 4 cubes tuned to 34hz and it sounds good but would my sound quality improve if I sealed the port? Or is 4 cubes too big for a sealed ?

And you bumped a thread from 2004 because?? lol, start a new thread.

Don't seal it up.....

 

[mrpep]

And you bumped a thread from 2004 because?? lol, start a new thread.
Don't seal it up.....

Lol, I need to start looking at dates.... [emoji16]

 

[adulbrich]

Lol, I need to start looking at dates.... [emoji16]

Yeah //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[Bamacabbie]

I have a 97 caravan. I recently acquired a set of kicker c10s space is not a problem but I need some help with the enclosure. Any ideas

 

[ciaonzo]

God dammit.

 

[audiopun]

Wow great info I learned a lot from reading that. I have a question; I like dubstep, trap, rap, house, trip hop and other genres focused on heavy bass. It sounds like I'd be better off with a ported enclosure. Is that correct?

 

[BSchrowang]

Wow great info I learned a lot from reading that. I have a question; I like dubstep, trap, rap, house, trip hop and other genres focused on heavy bass. It sounds like I'd be better off with a ported enclosure. Is that correct?

Yes a custom built ported box will have strong accurate bass

 

[LosIsATool]

Wow great info I learned a lot from reading that. I have a question; I like dubstep, trap, rap, house, trip hop and other genres focused on heavy bass. It sounds like I'd be better off with a ported enclosure. Is that correct?

A lot of that music like any music relies more on midbass then you would think.

 

[Jeffdachef]

Wow great info I learned a lot from reading that. I have a question; I like dubstep, trap, rap, house, trip hop and other genres focused on heavy bass. It sounds like I'd be better off with a ported enclosure. Is that correct?

yeah those genres dont go deep with the bass at all. best you'll see is around 33hz drops, the rest is solely based around 40 to 50hz basslines.