2 15s vs 1 18

[Matt A 10+ year member]

ok sounds good...thanks everyone

 

[hatedonmostly 5,000+ posts]

This. I forgot who it was but a guy with an F150 was hitting some really good numbers at low frequencies with 2 HDC315's and a Sundown 3000.

You thinking of Bigpimpin91? Not sure what amp he has, nor can I remember if he has 15's or 18's, but sitting in his Bronco was pretty retarded...

 

[ThatChevyGuy 5,000+ posts]

Build another box if you're getting bored of your current combo, try lower like 30 hz, (lower=louder to the ear) you got a good setup.

 

[Buck 5,000+ posts]

You thinking of Bigpimpin91? Not sure what amp he has, nor can I remember if he has 15's or 18's, but sitting in his Bronco was pretty retarded...

Nah man I'm pretty sure it was a guy that had a white F150. Because I used to have an F150 and I really wanted to do a setup like his. I think the title of his thread was "who says HDC3's can't play lows?" or something like that.

 

[mazdakid 5,000+ posts]

:facepalm: That's not how it works.
OP, stick with two 15"s

thats not how it works, but he wasnt wrong.

 

[Buck 5,000+ posts]

thats not how it works, but he wasnt wrong.

I know, but how it works is simple. pi*r^2

 

[Slo_Ride 5,000+ posts]

Biggest thing people dont get is that the HDC3 has to have a lot of port. 16 sq in per cube.

and two 15 over one 18

 

[RAM_Designs 5,000+ posts]

:facepalm: That's not how it works.
OP, stick with two 15"s

He's right...close, at least. Just a coincidence that two 15's = 30, and 30-18=12.

Going off of the sd for a BTL...

two 15's: 1620cm^2

one 18: 1210cm^2

--------------------------

410cm^2 difference, and the 12" version has 480cm^2 of cone area.

 

[hispls 5,000+ posts]

:facepalm: That's not how it works.
OP, stick with two 15"s

Two 15's have the cone area of 353.43, one 18" sub has a cone area of 254.47 a 12" sub is about 110" so the difference in cone area is about = that of a 12" sub

Q.E.D.

 

[Buck 5,000+ posts]

Two 15's have the cone area of 353.43, one 18" sub has a cone area of 254.47 a 12" sub is about 110" so the difference in cone area is about = that of a 12" sub
Q.E.D.

My apologies. You're math is correct //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[AllenH427 10+ year member]

Two 15's have the cone area of 353.43, one 18" sub has a cone area of 254.47.

Edit I'm an idiot. Whoops.