numerous subs???

[a_steezy]

just kinda wondering, why do people lets say run four 10's at 1500 watts...

why not save your self and do like two 15's at 1500 watts???

i'm not seeing why people put more than two subs when you could just put more powerful subs, and less of them to equal it out

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[Beerdrnkr 5,000+ posts]

I was wondering something similar as far as sq goes. Wouldn't running anymore than 1 sub lower the sq in a vehicle because of less cancellation? Don't mean to threadjack.

 

[skadude016 5,000+ posts]

I was wondering something similar as far as sq goes. Wouldn't running anymore than 1 sub lower the sq in a vehicle because of less cancellation? Don't mean to threadjack.

actually it would probably sound better at higher volumes with more woofers if done correctly.

 

[Americanstrat21 10+ year member]

It would sound better with more woofers...

 

[azimuth 5,000+ posts]

It would sound better with more woofers...

if planned right. you can also really fvck things up by getting too complicated

 

[revots 10+ year member]

4 10's have more surface area than 2 15's. If they both had 1500 watts and xmax was similar, the 10's would be louder. Assuming the box style was the same, Ie. ported, sealed.

 

[squeak9798 5,000+ posts]

I was wondering something similar as far as sq goes. Wouldn't running anymore than 1 sub lower the sq in a vehicle because of less cancellation? Don't mean to threadjack.

Subbass waves are too long to get cancellation from running multiple subs.

However, the advantage of running either multiple large subs or an array of smaller diameter subs is the increased cone area. Generally as excursion increases, distortion increases aswell. So the more cone area you have, the less excursion you need for a given output level, which should result in decreased distortion.

And for the output oriented....the more cone area you have, the more output you have for a given excursion level.

 

[Beerdrnkr 5,000+ posts]

Subbass waves are too long to get cancellation from running multiple subs.
However, the advantage of running either multiple large subs or an array of smaller diameter subs is the increased cone area. Generally as excursion increases, distortion increases aswell. So the more cone area you have, the less excursion you need for a given output level, which should result in decreased distortion.

And for the output oriented....the more cone area you have, the more output you have for a given excursion level.

Thanks squeak, that's some good info.

 

[Roid_monkey 10+ year member]

4 10's have more surface area than 2 15's.d.

no they don't. that is a 100% wrong statement.

 

[thevic24 5,000+ posts]

no they don't. that is a 100% wrong statement.

????

 

[TeoTorriatte 10+ year member]

????

He would be correct. You can figure that a single 15" driver will have around 20% more cone area than a pair of 10" drivers -- depending on the drivers in question of course, some will be more, some less.

 

[ultimate157 5,000+ posts]

1 10" sub, given 1.25" of useless measurement on each side for gasket and non-moving surround material, means an effective moving piston of ~7.5" in diameter.

This equates to ~44sqin, x 4 is 176sqin.

1 15" has ~12.5" effective cone area, which is 122sqin, x 2 is ~244sqin.

Sorry revots

 

[ronrico418 10+ year member]

I'm glad somebody said that. 2 10s more than 1 15 I think not. Did you know 3 12s is very close to 1 18?

As far as cancellation NO

As far as running multiple subs. Yes If you are able to put 1 trillion watts to a 15 inch sub how good is it gonna sound? I'd rather have more cone area (relates today as I'd much rather run 2 15" Fi SSDs than 1 BTL 15" w/ 3 times the power)

Original Question

The reason someone would run 4 10s over 2 15s

Answer

Your lookin' at around 4.4 CF needed for a nice enclosure for 410s and around 10CF for 215s.

TOPIC OVER

 

[jdawg 5,000+ posts]

It also would have to do with box measurements, 15's may be too tall to fit in a certain spot, 10's may not

 

[MitchZ 10+ year member]

Or your like me and you buy your first system, then you decide to upgrade the subs to better 10" subs, then you have 4 10" subs with 2 of them sitting in the closet, then you decided to sell your amp and get a more powerful one to run 4 subs. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif