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duckfart
04-05-2006, 01:49 AM
Which box will play deeper bass notes a ported box tune in the low 30's or a sealed box with 1 cube ft in volume. I'm talking about deeper bass notes and not what would sound louder. thanks

duckfart
04-05-2006, 01:55 AM
anyone>

duckfart
04-05-2006, 02:03 AM
..............

JL12W7INAGS300
04-05-2006, 09:35 AM
a sealed box?

Jameseypoo
04-05-2006, 11:31 AM
Definitely the ported box...

skeptikal
04-05-2006, 12:04 PM
Which box will play deeper bass notes a ported box tune in the low 30's or a sealed box with 1 cube ft in volume. I'm talking about deeper bass notes and not what would sound louder. thanks

depends on the woofer...

lebomb
04-05-2006, 12:20 PM
SEALED period. Do a search.

lebomb
04-05-2006, 12:26 PM
Here ya go....................




SDP of TC Sounds fame had this to say:

"In a vehicle, a sealed enclosure will ALWAYS best a vented enclosure for low frequency extension. Always.

Most sealed woofer systems start rolling off at 50Hz or so. With the 12dB rolloff below system resonance, and the transfer function of the vehicle - the average end result is a woofer system that extends down below 10Hz flat.

With a vented system, below vent resonance, rolloff is 24dB/oct. In a vehicle, most vented systems exhibit an exaggeration in response from 30-60Hz (average). This exaggerated response at 30Hz, is usually what is considered 'deep' or 'low'. With the steeper rolloff of the vented system, 10Hz stuff will be virtually in-audible and non-existent.

To go low the 'real' way - a sealed woofer system is the ticket.

If you're concerned with output 30Hz and above - a vented system is the way to go.


Many advantages and disadvantages to each option. But to settle the arguement on which kind of enclosure goes lowest - sealed is the answer.

Jameseypoo
04-05-2006, 12:54 PM
eh, my experience says vented gets lower. my re8's get much lower than my buddy's sealed kicker cvr 12's.

Chevyaudio
04-05-2006, 01:01 PM
Sealed boxes get lower...ported boxes tuned low just have more authority at the lower frequencies

Jameseypoo
04-05-2006, 01:22 PM
ah, i see

adio
04-05-2006, 01:22 PM
so there you have it.......... i guess?? a low tuned ported. tune to like 26 - 29Hz

tRiGgEr
04-05-2006, 01:24 PM
Sealed will play lower.

Ported will have more low end extension.

Depending on the equipment used you can use either one to achieve what you want.

lebomb
04-05-2006, 01:49 PM
Sealed will play lower.

Ported will have more low end extension.




Say what???? No thats not right.......sealed will play lower period. Ported plays down to the tuning frequency loud and then rolls off sharply. A sealed sub drops all the way to 10Hz. A ported wont do that. Ported boxes are loud down to whatever the box is tuned to........if he wants to go 30hz tuning.......frequencies from 30hz-50hz or so will be loud.......below that.....no.

Chevyaudio
04-05-2006, 01:53 PM
for an RL-p 12

Ported
http://i31.photobucket.com/albums/c393/chevyaudio/ported.gif

solid pink=1.5 @34
dashed oragnge=1.5 @28
dashed green=2 @30

Sealed
http://i31.photobucket.com/albums/c393/chevyaudio/sealed.gif

Solid pink=1.15 cubes
dashed orange=.86
dashed green=.2

lebomb
04-05-2006, 02:17 PM
It looks to me like the sealed doesnt have nowhere near the drop off as the ported........flatter low end response.

James Bang
04-05-2006, 02:32 PM
although a sealed can play 10hz, a human ear can barely perceive under 20hz.

My choice would be go ported tuned between 25-30hz. many songs out there will not play under 25hz.

lebomb
04-05-2006, 02:39 PM
although a sealed can play 10hz, a human ear can barely perceive under 20hz.

My choice would be go ported tuned between 25-30hz. many songs out there will not play under 25hz.


He said he wanted the box with the deepest bass, not the loudest.....that would be sealed. I have yet to hear in my 20yrs of car audio experience a properly built ported setup sound better than a properly built sealed setup.

:eyebrow:

James Bang
04-05-2006, 03:01 PM
I could care less of your 20yrs experience because what you stated about sounding better is subjective. I just stated my choice. WTF is deep bass anyways? :eyebrow:
my port goes pretty darn low and gets loud doing it. to me, that sounds better.

duckfart
04-05-2006, 07:02 PM
Thanks 2 all for the useful input

tRiGgEr
04-05-2006, 07:14 PM
Say what???? No thats not right.......sealed will play lower period. Ported plays down to the tuning frequency loud and then rolls off sharply. A sealed sub drops all the way to 10Hz. A ported wont do that. Ported boxes are loud down to whatever the box is tuned to........if he wants to go 30hz tuning.......frequencies from 30hz-50hz or so will be loud.......below that.....no.

Yes it is right. Maybe you misunderstood.

Sealed will always play lower correct.

A ported box will have more low end extension(low end output).

I know he was not concerned about output, but it was worth mentioning.

lebomb
04-06-2006, 09:25 AM
Yes it is right. Maybe you misunderstood.

Sealed will always play lower correct.

A ported box will have more low end extension(low end output).

I know he was not concerned about output, but it was worth mentioning.


I got ya.

lebomb
04-06-2006, 09:27 AM
I could care less of your 20yrs experience because what you stated about sounding better is subjective. I just stated my choice. WTF is deep bass anyways? :eyebrow:
my port goes pretty darn low and gets loud doing it. to me, that sounds better.


OK.....lets drop the 20yr experience thing. Deep bass is noticing that your sub plays LOWER notes. Notes that you couldnt hear or feel with the ported box.

Place your sub in its proper sealed box and take a listen......I doubt it would be louder, but I bet it will SOUND lower. :eyebrow:

I was really able to tell with my sub by playing some Jazz music, NOT hip-hop or rap, but Jazz......the string bass dropped low on my ported setup, but sealed......it dropped off the map. The bass sounded so much deeper and richer, instead of the rumbling loud bass.

Oh well, dont want to beat a dead horse.