non-SQ subs

[adio 5,000+ posts]

easy question. how do u make an SPL - based sub have more SQ? do u just give it bigger sealed box? give it a low tuning (26 -32Hz)?

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[squeak9798 5,000+ posts]

Depends on the sub.

Some will sound like poop no matter what //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Seriously though, the answer is going to be subwoofer specific. For example, a lot of SPL oriented subs are designed for ported boxes, so putting them in a sealed enclosure all together will net poor results. Others will still do admirably in a sealed enclosure, so for those it's a good manuvear.

Are you just asking in general, or about a specific subwoofer?

 

[adio 5,000+ posts]

Depends on the sub.
Some will sound like poop no matter what //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Seriously though, the answer is going to be subwoofer specific. For example, a lot of SPL oriented subs are designed for ported boxes, so putting them in a sealed enclosure all together will net poor results. Others will still do admirably in a sealed enclosure, so for those it's a good manuvear.

Are you just asking in general, or about a specific subwoofer?

both. it seems like alotta people are hesistant on buyin kickers l5/l7 cause of the supposed poor SQ. when polecat comes hear and says thats' not true about any of their subs, he never says what gives kicker great SQ. i'm tryin to find out what it is.

as a matter of fact i would love to buy either 2 8's or maybe 2 10's from them (maybe some l5's), i want some Sq with it, cause the SPL is already a given.

but this can be abou any SPL sub in general. i think alotta companies would get more biz from us if we knew how to manipulate things a little better.

 

[squeak9798 5,000+ posts]

Moderately large sealed enclosures will help the L7 series (atleast the older series. Not sure if the same applies to the new '06 models).

While in most of the installs I've listened to, they've sounded like ***....they have won world championships in the hardest class of IASCA. That says something.

 

[adio 5,000+ posts]

Moderately large sealed enclosures will help the L7 series (atleast the older series. Not sure if the same applies to the new '06 models).
While in most of the installs I've listened to, they've sounded like ***....they have won world championships in the hardest class of IASCA. That says something.

what was it about most of the installs?

whats the hardest class of IASCA consists of?

what about other SPL subs? what can help their SQ?

 

[helotaxi 5,000+ posts]

Kickers win SQ comps because of the front stage and not because of the subs. Plain and simple. When they are crossed over in the 50hz region, it's fairly moot how accurate they are as there is very little of the music down that low. To build a great SQ system, get it sounding excellent without the subs there at all and then you can add pretty much any sub to fill out the last half octave or so and call it a day.

 

[bigbassman Premium Member]

1. mass the cone

2. limit excursion

3. ultra low crossover point

that'll help

Loyd L.

 

[squeak9798 5,000+ posts]

Kickers win SQ comps because of the front stage and not because of the subs. Plain and simple.

When you are competing against the best sounding vehicles in the world, with musical content that extends all the way down to 18hz, and into the 20's on just about every song....you can not win world finals in the toughest, most stringent class without having a subwoofer that is sonically up to the challenge.

The L7 being inside that vehicle surely does not make it the best sounding subwoofer on earth. But it has to be capable of sonic accuracy. Having a substandard substage could easily make the difference between a 1st place and a 2nd place at that level of competition.

 

[adio 5,000+ posts]

hmmmmmmmm...... from loyds answer, doing those 3 things does it for all spl subs. true or not?

so squeak, do u know what it is about kickers substage installs that makes them win?

 

[squeak9798 5,000+ posts]

so squeak, do u know what it is about kickers substage installs that makes them win?

Heh....the guy installing and tuning them.....

 

[T3mpest 10+ year member]

Kickers win SQ comps because of the front stage and not because of the subs. Plain and simple. When they are crossed over in the 50hz region, it's fairly moot how accurate they are as there is very little of the music down that low. To build a great SQ system, get it sounding excellent without the subs there at all and then you can add pretty much any sub to fill out the last half octave or so and call it a day.

what he said

(haha, we reversed it this time)

 

[DFW40 10+ year member]

I had the older L7 with the shiny silver cone. Like someone said it did sound pretty good in a med -large sealed box with a 1 pound to one cubic foot ratio of polyfill stuffed in there. Also I would crossover pretty low (55hz).

 

[helotaxi 5,000+ posts]

When you are competing against the best sounding vehicles in the world, with musical content that extends all the way down to 18hz, and into the 20's on just about every song....you can not win world finals in the toughest, most stringent class without having a subwoofer that is sonically up to the challenge.
The L7 being inside that vehicle surely does not make it the best sounding subwoofer on earth. But it has to be capable of sonic accuracy. Having a substandard substage could easily make the difference between a 1st place and a 2nd place at that level of competition.

Most of the tonality of the subbass comes from the drivers playing the harmonics of the subbass freqs. As long as the midbasses are up to the task of providing the impact of the transients, all the sub has todo is provide the fundamental. When you need accurate output in the 20hz range, only a sealed enclosure is going to get you there. Try to tune a ported enclosure low enough to play those freqs and the phasing and group delay would totally ruin any chance of accuracy. As Loyd mentioned, minimizing excursion is important as well to keep the sub operating in its most linear range. But I will say again, one of the best ways to get a sub to sound good is to limit the range that it needs to play by crossing it over as low as possible. and pairing it with a midbass that will cover the rest.

 

[CBFryman2 5,000+ posts]

Heh....the guy installing and tuning them.....

x2

Install is the most important. ive never heard an square cone install that ran with the best of SQ installs ive heard. But the L7/L5 certianly is far from the worse ive heard as well. So with work, time, more time, and know how...

 

[adio 5,000+ posts]

hmmmmmmmmmmmm....