can a number of 10'' replace a 15'' sub?

[mike_cy 10+ year member]

can a number of 10'' subs make the same job like if you had a 15''

I have 2, 10'' EarthQuake Tremor subs ( htpp://www.earthquakesound.com ) (the black ones not the red)

running it with PH300.1 (300x1 brigded) , i haven't install the second sub yet

I have the current one in a ported box.

at first I bought the 10'' because i wanted to have some space but when I increase the volume it starts to distort so I bought another one //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif but now that i have to created a bigger box i was wondering...if they can do the same work as a 15'' sub would.

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[hoss 5,000+ posts]

yes, with enough 10"s you can be as loud as a 15", and you will most likely sound better too. the general rule of thumb is that 2 10"s is equal to 1 12", and 2 12"s are equal to 1 15". following that rule 4 10"s would be equivelant to 1 15"

if you want to get more technical and look at surface area:

1 15" = 3.14(7.5)^2 = 176.63 in^2

1 10" = 3.14(5)^2 = 78.5 in^2 * 4 = 314 in^2

so by surface area, 4 10"s is more than 1 15". but you cant really judge by surface area alone. but running less than 4 10"s could still give you better output than a single 15".

running multiple smaller subs can also give you better SQ, since each woofer doesent have to move as far to reproduce the same amount of noise //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mike_cy 10+ year member]

thank you very much!!!!

now the only thing left is to buy more 10'' since i cannot mix subs //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[gettnbig 10+ year member]

you will need a bigger amp too.

 

[mike_cy 10+ year member]

and money //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[BooLeaN 10+ year member]

i don't know if this is BS but I was told by a JL Audio rep that 3-12's have the same surface area as 2-15's. 3-10's is the same as 2-12's. So that would mean that 4.5 10's = 2 15's therefore 2.25 10's = 1 15.

I am only talking about surface area and remember I said that a JL Audio rep told me, I never figured it out on my own so don't kill me if i'm wrong //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Just trying to help out //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[helotaxi 5,000+ posts]

Unless you have the Sd (effective piston area) spec for every driver that you are trying to compare and the Xmax as well, you can't generalize. For SPL it comes down to swept volume (Sd times Xmax). Until you figure that out you can't make a comparison. A whole lot more goes into it including Q and Mms but swept volume dictates the potential with unlimited power.

 

[Shaunly 10+ year member]

who cares about all the number crap. I say just buy 3 10s try it and if it's still not a loud as your 15, than get another one and if that's still not enough, than keep adding. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[hoss 5,000+ posts]

who cares about all the number crap. I say just buy 3 10s try it and if it's still not a loud as your 15, than get another one and if that's still not enough, than keep adding. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

i would not recomend going with an odd number of subs, because more often than not, you are going to end up with a very weird ohm load, which will give you less power from your amp. but if you can find the right subs, with the right impedence to give you the load you need go for it... but most subs usually work best with either a single sub, two subs, 4 subs... etc.

but if you find the combo that works, then go for it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mike_cy 10+ year member]

at first i didn't want the 15'' because of it's big size.....(of the box...no room in the trunk for anything else) now that i have the 10'' i can't sell them because nobody believe me they are so good for the price - 109$ got em and he sells them for others 130$, i never said selling them as new- is there a way to mix a 15'' and 2 10'' and have a great sound?

 

[gettnbig 10+ year member]

- is there a way to mix a 15'' and 2 10'' and have a great sound?

Yes. If you cross your tens over to run at the 60-70hz range down to like 35-40 hz. Then run your 15 below the lower crossover point of you tens you will avoid cancelation. I have no experiece with this but theoretically it would work.

 

[mike_cy 10+ year member]

don't laugh //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

buy 2 same crossover? the first make the 2 run 35-40hz and the second cross at the 15'' --35hz ?