Subwoofer with wider frequency response range?

[NickD85]

So as a lot of you guys know, I put an 8" kicker L7 in the sidewall of my trunk. I'm very happy with it, and people are always surprised by the punch that comes from the tiny subwoofer and its hidden enclosure. Nonetheless, I'm interested in something that will respond to a wider range of frequencies. 28-100Hz seems to be a pretty selectively low range. I realize that's exactly what a subwoofer is designed to do, but I've seen cheaper subs that respond to wayyy higher frequencies. Are there subs out there with dual cones, where one will respond to lower frequencies and the other to higher stuff? I'm clearly not an expert in the area, so for those of you who might be, please forgive any naivety in my questions. I, as always, appreciate your help.-Nick
Modified by NickD85 at 9:50 PM 12/26/2009

[K03sport]

I would think that a subs higher freq limit is measured by how fast the cone can (is allowed) to move. Do these higher rated freq subs also higher higher low limit response too?

I would think a sub meant to hit really low, would have a very stiff suspension system and surround, and thus would be limited in how fast the cone could vibrate. As frew range increase, speaker diamter seems to decrease, obviously to allow faster movement of the cone. This may not apply in 100% of the situations out there, but I'm sure it covers a wide majority of speaker design.

Even Kicker seems to limit the L7 range to 100hz. The lower limit decrease with each bump in size with the 15" rated to 18Hz.

Does you sub produce sounds above 100Hz, yes, I'm sure it does, but it won't do it very effectively. The 28-100Hz if the Optimum range. Then you need mid base drivers to play down around 100Hz, and then on up the speaker line.

I"m sure most people will have their subs crossed at 80Hz, maybe even 60Hz, depending on what they have playing the next "level" of sound.

What are there, 5 levels of speakers - Sub woofer, mid bass woofer, midrange, tweeter, super high tweeter. do you really need all levels of speakers? No, but It makes the music sound better. Kinda like golf...do you really need all 14 clubs in your bag...No, but it makes the game easier...well for some of us it does.

A dual cone woofer would have to look like a 2-way speaker and would be rather large and bulky. If they were one right behind the other, the back driver would influence the front driver - push/pull action.

What is your L7 crossed at?

[fastpathy35]

i dont know what kind of range youre looking for, but i do know that sony xplodes have a wide range...not the best of woofers but it has range. i have infinity kappa perfects and they have a pretty wide range also.