4 12's or 2 15's

[Mackenzie 10+ year member]

I don't really go by manufacturer's specs simply because I am not looking for the same thing they are. There is indisputable proof that 15's get louder than 12's. Yes they require more airspace, but you get more output for your money.

I never said that 12s are louder than 15s. It doesnt take a scientist to figure that out. I was saying that 4 12s will have more output than 2 of the same 15s, when both setups are powered, and installed to their full potential.

 

[Goldtaz1 10+ year member]

I never said that 12s are louder than 15s. It doesnt take a scientist to figure that out. I was saying that 4 12s will have more output than 2 of the same 15s, when both setups are powered, and installed to their full potential.

Really??? You never said this:

I can answer this question, based on the fact that right now I have 4 12s in my car, and I just got rid of my 15s. If both setups are in their correct sql/ spl box, and both are ran off the same power, then the 12s should win hands down. I did this, and my 12s destroyed my 15s off the same power, and both being in their reccomended boxes.

It's really funny because (4) 12's barely have more Sd than (2) 15's, 1680 cm^2 to 1620 cm^2 to be exact. This is why I enjoy going to shows and beating everyone in the classes above me. If you can ever fully understand what cone area means then you will start winning alot more comps. Peace.

 

[Mackenzie 10+ year member]

Really??? You never said this:


It's really funny because (4) 12's barely have more Sd than (2) 15's, 1680 cm^2 to 1620 cm^2 to be exact. This is why I enjoy going to shows and beating everyone in the classes above me. If you can ever fully understand what cone area means then you will start winning alot more comps. Peace.

I dont compete, so I dont need to win any sound comps, but when I swaped out my 2 15s for my 4 12s the difference was tremendous off the same power, and both in the factory sql boxes. O well I guess this thread is kinda pointless now. YOu man not gain much in some installs, but im just saying in mine I gained quite a bit.

 

[packerfan 10+ year member]

I guess I know pretty much nothing about SPL then. The number that is in my signature was achieved with a box (for an 18" RE MT) that is 6 cubes net.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Obviously you dont if you dont know that an SPL box and a daily driving box (made to play music) are completely different types of boxes.

 

[packerfan 10+ year member]

Really??? You never said this:


It's really funny because (4) 12's barely have more Sd than (2) 15's, 1680 cm^2 to 1620 cm^2 to be exact. This is why I enjoy going to shows and beating everyone in the classes above me. If you can ever fully understand what cone area means then you will start winning alot more comps. Peace.

Do you realize that cone area isnt the ONLY determining factor in SPL. You can have 4 18s in a shitty install and get beat by a few 10s. Install>everything else. Build a box that has minimal IR with lots of power and a sub with little to no power compression and a strong box and thats what will make you loud.

 

[packerfan 10+ year member]

I don't really go by manufacturer's specs simply because I am not looking for the same thing they are. There is indisputable proof that 15's get louder than 12's. Yes they require more airspace, but you get more output for your money.

If there is so much 'undisputable proof' then post it....and what meter did you do the 157.x with? I can hardly believe it was the termlab.

 

[TooLowTooGo 10+ year member]

im thinking audiocontrol. but hey anything is possible. u got ppl with (1) 10 hitting 150's

This is not entirely true. Most alot of 15s require a box twice the size as the same 12. This exact situation happend in my case. In all it equaled out to the same cubic feet.

i kno u went threw this just a few posts ago. but let me post some box sizes recommended from the manufacturers

12" JL Audio W7 - 1.75+

13" JL Audio W7 - 2.25+

12" Orion H2 - 1.5+

15" Orion H2 - 2.25+

12" MTX 9500 - 2+

15" MTX 9500 - 2.5+

12" Kicker L7 - 1.75+

15" Kicker L7 - 3+

yes they require alittle more space. but not twice the space as u stated.

 

[Mackenzie 10+ year member]

im thinking audiocontrol. but hey anything is possible. u got ppl with (1) 10 hitting 150's


i kno u went threw this just a few posts ago. but let me post some box sizes recommended from the manufacturers

12" JL Audio W7 - 1.75+

13" JL Audio W7 - 2.25+

12" Orion H2 - 1.5+

15" Orion H2 - 2.25+

12" MTX 9500 - 2+

15" MTX 9500 - 2.5+

12" Kicker L7 - 1.75+

15" Kicker L7 - 3+

yes they require alittle more space. but not twice the space as u stated.

I never said all require twice the space, but their are a ton that do.The ones im running are a prime example. heres a few

12 pg ti 2 cubes

15 pg ti 4 cubes

12 re xxx 2 cubes

15 re xxx 4 cubes

ect....

 

[BassAddictJ 5,000+ posts]

good god guys.......

we can generalize all we want but the only way to get this guy a straight answer is if we know specifically what subs we have in mind for this situation. im suprised we're on page 2 already and no one has asked what subs are going to be used.....

- box sizes differ per driver per manufacture per box type, hard to generalize on that....

- install IS EVERYTHING. thats how my xxx15 gets louder and cleaner than this one jackass's 4 dub 12's with "twice" the power (**** noobs and thier "peak" power rating) totally owned....anyways im off topic.

- drivers intended appication will pay an important factor too.... (this pretty much falls under install being done right but i wanted to list it seperately)...assumeing install is done right..... 2 MT 15 vs 4 audiopipe 12's.. MT's will dominate..... again....all in the install, but haveing a higher quality driver helps out a bunch too....

not *****ing at you guys but i wanted to get that off my chest

 

[Goldtaz1 10+ year member]

Do you realize that cone area isnt the ONLY determining factor in SPL. You can have 4 18s in a shitty install and get beat by a few 10s. Install>everything else. Build a box that has minimal IR with lots of power and a sub with little to no power compression and a strong box and thats what will make you loud.

Talk about the "DUH" statement of the year!

 

[CrushinCory 10+ year member]

If I had the space I would go with the 4 12's, if not I would do the 2 15's.

 

[Goldtaz1 10+ year member]

If there is so much 'undisputable proof' then post it....and what meter did you do the 157.x with? I can hardly believe it was the termlab.

I'm sorry but it's not my fault if you don't understand mathematics and physics principals. If you need me to, I can point you in the direction of some very qualified universities and schools that can help you.

The meter that was used is an Audiocontrol meter. While I do realize it's not a termlab, there is no need to try and belittle me to make yourself feel better about not being able to understand mathematics and physics.

 

[Goldtaz1 10+ year member]

If there is so much 'undisputable proof' then post it....and what meter did you do the 157.x with? I can hardly believe it was the termlab.

Also, why do most of the big name competitors use 18's in their install?? If you can answer that question then I will take your statement seriously.

 

[audioholic 5,000+ posts]

Mackenzie, enclosure volume is based very much by driver displacement. Since a 15 displaces almost double a 12, Im not sure why you seem to be surprised a 15 requires substantially more enclosure volume (such as double). What's your point exactly?

 

[Mackenzie 10+ year member]

Mackenzie, enclosure volume is based very much by driver displacement. Since a 15 displaces almost double a 12, Im not sure why you seem to be surprised a 15 requires substantially more enclosure volume (such as double). What's your point exactly?

The point was that 4 12s wont always take up more cubes then 2 15s will. He was saying with 2 15s you will save space, when its not entirly true. It all depends on what subs you go with, since most all subs have different box requirements, but in my case it came out exactly the same. 8 cubes recommended for 2 15s, and 8 cubes for 4 12s. Who said I was suprised that 15s require a bigger box?