2 Alpine Type X 10's or 1 15" L7???

[KTFO 10+ year member]

I have 2 Alpine Type X 10's currently in 3.2^ @ 36hz....a local guy has a BNIB 2008 L7 15" he wants to trade me (he's also throwing in $50). I am running the 2 Alpines on my Brutus 2008d @ 1 ohm....would the L7 be louder on the same amp? Which has more cone area? Someone help me out here...

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[bass_lover1 10+ year member]

If he's local, ask if you can demo it in your car for a few songs and see what you think.

 

[KTFO 10+ year member]

I would but he has it in a 2.8^ prefab ported, my experience with L7 15s is that they don't really come to life unless you have around 4.5^.... so to audition it in my car would be useless I think. My Type Xs are loud as ****...

 

[PV Audio 5,000+ posts]

Where are people coming up with these vs. threads? You do realize that those subs would almost NEVER be bought by the same person? The Type X is one of the best SQ subwoofers money can buy, and the L7 is a pure SPL subwoofer.

 

[PV Audio 5,000+ posts]

I would but he has it in a 2.8^ prefab ported, my experience with L7 15s is that they don't really come to life unless you have around 4.5^.... so to audition it in my car would be useless I think. My Type Xs are loud as ****...

//content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif :uhoh: //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif That's close to HALF of what that speaker should be in. Throw it in 4.75 cubic feet and then it'll start to wake up.

 

[dr_peeb 10+ year member]

I have 2 Alpine Type X 10's currently in 3.2^ @ 36hz....a local guy has a BNIB 2008 L7 15" he wants to trade me (he's also throwing in $50). I am running the 2 Alpines on my Brutus 2008d @ 1 ohm....would the L7 be louder on the same amp? Which has more cone area? Someone help me out here...

I can answer the cone area question.

Area = pi x radius squared

Area of your two 10's = 157.1 square inches

Area of one 15 = 176.7 square inches

 

[bass_lover1 10+ year member]

I can answer the cone area question.
Area = pi x radius squared

Area of your two 10's = 157.1 square inches

Area of one 15 = 176.7 square inches

Did you just use the formula of finding the area of a circle, on a square object?

Yep, I think you did, moron.

Although, this would be relevant if the L7 was circular in shape, but it's not.

 

[KTFO 10+ year member]

Did you just use the formula of finding the area of a circle, on a square object?
Yep, I think you did, moron.

Although, this would be relevant if the L7 was circular in shape, but it's not.

well what is the cone area difference then? I think the 2 type x's may be louder because they have more xmax but a little less cone area.... isnt it some thing like sd X xmax = Vd?

 

[dr_peeb 10+ year member]

Did you just use the formula of finding the area of a circle, on a square object?
Yep, I think you did, moron.

Although, this would be relevant if the L7 was circular in shape, but it's not.

OK, so the L7 is even more bigger than his two 10's.

Yep, that's right, I said more bigger.

Edit: In fact, 15" x 15" = 225 square inches, which is 43.2% square inches more area than two 10's.

 

[ONE15ISALLINEED 10+ year member]

1 diamond d6 15 in a 4cube slot ported box sounds pretty good

 

[Synyster97XLT 10+ year member]

Did you just use the formula of finding the area of a circle, on a square object?
Yep, I think you did, moron.

Although, this would be relevant if the L7 was circular in shape, but it's not.

The formula for a flat circle at that. The actual formula for a cone is different.

 

[dr_peeb 10+ year member]

The formula for a flat circle at that. The actual formula for a cone is different.

I asked about that in another thread, can't remember which one now, but the posters there said the opposite of that. I'll look for it ...

(Edit 1: Actually, I should say, yes, I know the surface area of a cone is a different formula than for a flat circle; The posters in the other thread said you do not consider the conical aspect when comparing woofer areas. Not that it really matters to me, but I'll see if I can find it ...)

Edit 2: Here are the posts by audioholic:

http://www.caraudio.com/forum/showpost.php?p=6577060&postcount=20

http://www.caraudio.com/forum/showpost.php?p=6577353&postcount=23

 

[infamous_e46 5,000+ posts]

i would go the dual type x route that way it will be musical

 

[BloodyGuts335i 10+ year member]

do you have the type x subs in a sealed or ported box op?

 

[BloodyGuts335i 10+ year member]

nevermind op. didn't see your box is tuned to 36hz