Which for "deepest" bass,sealed or ported?

[Supergumby5000 5,000+ posts]

If you pick a tuning frequency above the lowest frequency that you intend to drive into the speakers, the speaker may well be damaged due to the lack of damping. Below the tuning frequency, all of the control will depend on the speaker's suspension. 

http://www.bcae1.com/

#110

1) it mentions nothing about subsonic filtering

2) playing 10hz or less below tuning with a properly tuned amplifier will not damage you equipment in a car audio environment, unless maybe you are playing some clipped *** tracks. and in a ported box (usually tuned around the 30's), there is no intention of playing lower than audible limits, which is usually where the subsonic filter is set.

Quit trying to be booksmart and think logically.

 

[Ridinhi 5,000+ posts]

What subs? I've had great experiences with both, but both were big, and the ported was tuned loooooowww

Well, just thinking in general. Thats why im questioning this. Tired of changing setups and want to get somethng and stick with it for a while. I just want some low,loud, clean bass. The lowest bass if experienced was my CVX's ported but then again,my Oz Matrix Elites sealed produced nice deep low bass. Elites where in a car trunk and the CVX's were in my Suburban.

 

[Cameron_B 10+ year member]

Have you always built your own box, or have you always ran prefabs?

Maybe your turning is not low enough?

Most all mainstream subs will go low in a large low tuned ported box.

1ndatrunk's stuff gets LOW

 

[Ridinhi 5,000+ posts]

Have you always built your own box, or have you always ran prefabs?
Maybe your turning is not low enough?

Most all mainstream subs will go low in a large low tuned ported box.

1ndatrunk's stuff gets LOW

yeah,I have heard 1indatrunks's and you are right,sounds very nice. I build my own boxes and my cvx's were in 4.5@33hz. They did sound real good. Still wasnt what i was looking for unless its because they were underpowered. Only had 1200 wats to the pair and im sure my electrical wasnt able to handle even that. Think bout just doing one 18" with around 1200 watts tuned low. Not sure what sub though. Thats just future plans.

 

[1ndatrunk 10+ year member]

yeah,I have heard 1indatrunks's and you are right,sounds very nice. I build my own boxes and my cvx's were in 4.5@33hz. They did sound real good. Still wasnt what i was looking for unless its because they were underpowered. Only had 1200 wats to the pair and im sure my electrical wasnt able to handle even that. Think bout just doing one 18" with around 1200 watts tuned low. Not sure what sub though. Thats just future plans.

There is a TC9 motored 18 in the classifieds for around 225. Every TC9 sub that I have had got extremely low and loud. My Sonic was a TC9 sub, and in a 35hz tuned box it still dug deeper than my CSX18 ever could. When I had the Sonic in an undersized box(1.8cuft) tuned to 28hz, it was a low note beast, but wasn't quite as loud. Try a Maelstrom18 or Mach 5 IXL, tuned to 25hz in that Suburban. I wish I still had mine, I envy your cargo area:crap:.

 

[Ridinhi 5,000+ posts]

There is a TC9 motored 18 in the classifieds for around 225. Every TC9 sub that I have had got extremely low and loud. My Sonic was a TC9 sub, and in a 35hz tuned box it still dug deeper than my CSX18 ever could. When I had the Sonic in an undersized box(1.8cuft) tuned to 28hz, it was a low note beast, but wasn't quite as loud. Try a Maelstrom18 or Mach 5 IXL, tuned to 25hz in that Suburban. I wish I still had mine, I envy your cargo area:crap:.

cool, im gonna have to stop by so we can talk sometime.

 

[1ndatrunk 10+ year member]

cool, im gonna have to stop by so we can talk sometime.

Thats whats up

 

[rollerdj 10+ year member]

I was going to say IB like above, till I saw the ride. Secondly I'd say big box, tuned low with lots of port. You might even look into doing a folded horn or t-line since you have the room. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[dman4486 5,000+ posts]

with a large low tuned enclosure, you don't need big drivers to get low and loud:fyi:

 

[1ndatrunk 10+ year member]

with a large low tuned enclosure, you don't need big drivers to get low and loud:fyi:

Agreed, bit if you have the space, use it. My suburban had 4 12s in 12cuft@30hz, and was a low note monster and loud as balls. To each his own though. I'm into single sub setups now, so with that vehicle I'd do a single 18

 

[Immacomputer 10+ year member]

The frequency you tune a ported box to is the lowest frequency it will produce.
(And ported boxes need a subsonic filter tuned to that frequency to prevent damaging the sub.)

A sealed box will put out bass below its tuned frequency.

Either can be good, but it takes a larger box for a ported sub.

You have a very bad conceptual error when it comes to ported enclosures and their resonance point. Every statement above is just not correct at all.

1) The tuning frequency is NOT the lowest frequency the system will be able to reproduce. It is the point where the port is at its peak of resonance and where the acoustical impedance is at its maximum. The port will have acoustical output for about 1/2 an octave above and below. Below this 1/2 octave, the driver will be in control by its own suspension and lacks air spring from the enclosure. This doesn't mean it won't have output but means that its max power handling will be reduced. The frequency below tuning will be directly related to the distance between the front and rear wave of the driver with respect to the listener's ear as it will affect the phase relationship between the two.

2) Depending on the tuning, driver, and power used, you may or may not need a subsonic filter and you sure as hell DO NOT need one set right at the tuning frequency. This is a great way to kill useful output and take away the benefits of a ported enclosure. Stupid move with this one.

3) There is no "tuning" frequency of a sealed system as the box is not a resonant system. The closest thing you have is the resonance point of the driver, which will be at Fc. Below this point, the driver is less electrically damped and damped by the mechanical suspension system and the air spring of the box. That means as box size gets larger, max mechanical power handling decreases.

4) It does not take a giant ported enclosure to get low just like it doesn't take a giant sealed enclosure to get low.

 

[mcsoul 10+ year member]

What is the budget? What's the available air space?

What's the goal (other than deep) sq or SPL?

 

[Ridinhi 5,000+ posts]

What is the budget? What's the available air space?What's the goal (other than deep) sq or SPL?

budget would be $250.00-$300.00. Space(Suburban)-need I say more?//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif Goal,loooow bass!

 

[mcsoul 10+ year member]

budget would be $250.00-$300.00. Space(Suburban)-need I say more?//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif Goal,loooow bass!

How much power at what impedance? (or if the amp is not picked out what's the budget for it)

 

[Ridinhi 5,000+ posts]

How much power at what impedance? (or if the amp is not picked out what's the budget for it)

Not tyring to be difficult but dont have the amp yet but it would be a 1 ohm amp first choice because it seems that there are many of those to choose from. Then 2 ohm amp would be second choice. Budget would be maybe $200.00-$250.00. looking at 1000watts to up to 1500 watts if possible.