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Two 12" subs vs One 15" sub

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Old Sep 4, 2005 | 11:33 PM
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Default Two 12" subs vs One 15" sub

which one is better two 12" Rockford fosgate he2's or one 15" Rockford fosgate hx2???

any suggestions?
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Old Sep 5, 2005 | 07:35 AM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

Neither I don't like RF subs. They make good amps and there subs are decent but there are much better ones out there unless you get a awesome deal like a friend of mine did on some.
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Old Sep 5, 2005 | 08:52 AM
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honestly, i think two 12s will have much better response than just one 15. they will have more bump (12+12=24, 15+0=15) i know thats a really lame way of thinking about it, but its true, plus the bigger the sub, the more power it needs, and the slower the bump is. honestly, i think two 10s would be all you need, if youre just looking for good sound. but...
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Old Sep 5, 2005 | 08:53 AM
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oh yea, and i would stay away from RF, and go with JL Audio subs, they are, in my opinion the best sub out there
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Old Sep 5, 2005 | 12:54 PM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

with one 15 you miss out on a lot of other frequencies... it just doesn't sound as complete as it would with two twelves...
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Old Sep 5, 2005 | 06:10 PM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

thanks
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Old Sep 5, 2005 | 09:20 PM
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Default Re: Two 12" subs vs One 15" sub (ninjarich2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ninjarich2 &raquo;</TD></TR><TR><TD CLASS="quote">with one 15 you miss out on a lot of other frequencies... it just doesn't sound as complete as it would with two twelves... </TD></TR></TABLE>

lol, hahahaha! I got a Alpine 15" R (I hit above 150+dB) in my car and if I play test noises. I hear them all. But since I was 4 ive play instruments. I played piano, guitar, bass guitar, trumpet, bartone, and now i mix tracks. I have a formed ear. Most people that listen to test nosies can't hear some of the stuff I do. I can pin point destortion in a system even if its covered up by bass.

Imo its all up to you. Just dont go witht the Rf's. If you would get some 12" check out the new type-x from alpine:
http://www.crutchfield.com/S-V...X1242
or the jl w7's:
http://mobile.jlaudio.com/prod..._id=9
If you go with the 15 check out the Alpine R:
http://www.crutchfield.com/S-V...1#Tab
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Old Sep 5, 2005 | 09:46 PM
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Default Re: Two 12" subs vs One 15" sub (romoracing)

that's pretty cool.. you play test notes when you roll? i think i can pin point more areas
of distortion than you... i have two developed ears and an oscilloscope to flatten out all all the spikes... hahah j/p man... all i'm saying is when i had my boston 15 it was missing some mid bass, compared to the twelves which covered a better range... but then again.. different subs, different enclosures, different cars, different equipment... it all makes a difference...
go to your local shops listen to the different set-ups in peoples cars and go from there, it's all up to you
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Old Sep 6, 2005 | 08:55 AM
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Default Re: Two 12" subs vs One 15" sub (ninjarich2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ninjarich2 &raquo;</TD></TR><TR><TD CLASS="quote">that's pretty cool.. you play test notes when you roll? i think i can pin point more areas
of distortion than you... i have two developed ears and an oscilloscope to flatten out all all the spikes... hahah j/p man... all i'm saying is when i had my boston 15 it was missing some mid bass, compared to the twelves which covered a better range... but then again.. different subs, different enclosures, different cars, different equipment... it all makes a difference...
go to your local shops listen to the different set-ups in peoples cars and go from there, it's all up to you</TD></TR></TABLE>

Yeah, Sorry man didnt mean it in a negitive way. No, I dont play test notes when I roll it when im setting up a system. You do have a point. I have a bandpass box compared to most peoples sealed box. Another thing is most people just want it to bump. Back to the 1st post. Look into some real subs and a nice box and youll like it!!
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Old Sep 6, 2005 | 09:19 AM
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Default Re: Two 12" subs vs One 15" sub (romoracing)

check this out... the smaller the sub, then the faster it moves(resulting in a tighter and much cleaner bass) if you want more bass then add more subs. personally i dont like RF subs but their amps stomp pretty hard. In terms of amplification i think JL is the best. i used to be a car audio salesman and i ran thru many of the popular brands... everyone asks the same questions, "which one is the best?". Unfortunately this answer will vary according to each person. It all comes down to personal preference and budget. Do some more homework and see what you like... If i can steer you away from the RF subs cuz they tend to blow out a lot. maybe you should look at the W6V2 with dual voice coils for more accuracy or the W7 which slumps much harder. If you like rockford and still want to incorporate them you might want to look into audiobahn subs.... RFamps and Audiobahn is a very good combination.
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Old Sep 6, 2005 | 10:22 AM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

Just want to add one thing. More subs= more weight. Right now im thinking of putting 2 subs in my car to see the diff.
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Old Sep 6, 2005 | 11:17 AM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XaznkewlguyX &raquo;</TD></TR><TR><TD CLASS="quote">which one is better two 12" Rockford fosgate he2's or one 15" Rockford fosgate hx2???

any suggestions? </TD></TR></TABLE> So far the best advice I have seen given has to do with not so much as what is "better" but what you want and like, and thats the point, what do you like.

Although it is true, kind of, that 2 x 12s sound "tighter" then 1 x 15 and the 2 x 12s have more output then 1 x 15, I have heard single 15, [in the proper box with the right amount of power and tuned properly] that was tight enough to pucker up your bung hole and loud enough to out SPL 2 or more 12s, and on the other hand I have heard two 12 sound sloppy enough that I wouldn't want to stick anything into them and have very poor ouput.

What a sub sounds like has a lot more to do with the box then the size or brand of the sub itself. 94
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Old Sep 6, 2005 | 01:48 PM
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I have a 15" and have heard many 2 12". The main thing is what are you looking for? If you listen to rap go with the 15". If you listen to techno get 2 10". If you listen to it all get 2 12". Also, a box is very important. Find out from the company what the specs of the box are and if it is sealed etc......
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Old Sep 6, 2005 | 02:05 PM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

i juss swapped my two 12's for my one 15 and honostly i like the 2 12's but on the other hand i wanted some trunk space.

thanks everyone who posted!
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Old Sep 11, 2005 | 10:44 PM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

the hx2 sub has a heavier magnet ..go with two 12in he2's
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Old Sep 12, 2005 | 07:59 AM
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Default Re: (shiux)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shiux &raquo;</TD></TR><TR><TD CLASS="quote">honestly, i think two 12s will have much better response than just one 15. they will have more bump (12+12=24, 15+0=15) i know thats a really lame way of thinking about it, but its true,</TD></TR></TABLE>

No, it's not true - the correct way to look at it would be the displacement of the sub - assuming the 12s and 15 have the same xmax, examine their cone area - we'll over estimate it but keep things easy:

for the 12s: 2 * 6^2 * pi = 226 sq in
for the 15: 7.5^2 * pi = 176.6 sq in

so the 12's (again assuming the same displacement) have about a 20% advantage over the 15.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote"> plus the bigger the sub, the more power it needs, and the slower the bump is. honestly,</TD></TR></TABLE>

both of these statements are COMPLETELY false assumptions/generalizations


Modified by rcurley55 at 9:12 AM 9/12/2005
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Old Sep 12, 2005 | 08:46 AM
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rcurley55 &raquo;</TD></TR><TR><TD CLASS="quote">both of these statements are COMPLETELY false assumptions/generalizationsModified by rcurley55 at 9:12 AM 9/12/2005</TD></TR></TABLE>

Not Completely wrong except for the last statement. A 15 can respong just as fast as 12 and sound just as tight. The key difference will be that the 15 will require more current. Material mass has nothing to do with how tight a speaker sounds.
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Old Sep 12, 2005 | 12:11 PM
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxxtreme &raquo;</TD></TR><TR><TD CLASS="quote">Not Completely wrong except for the last statement. A 15 can respong just as fast as 12 and sound just as tight. The key difference will be that the 15 will require more current. Material mass has nothing to do with how tight a speaker sounds.</TD></TR></TABLE>

saying that a 15 REQUIRES more power then a 12 is plain flat out wrong - the larger the sub, the more efficient it will be, therefore it get's just as loud with less power. Now some larger subs can handle more power - which is great - but saying it NEEDS more is false imo....
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Old Sep 12, 2005 | 12:29 PM
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Default Re: (rcurley55)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rcurley55 &raquo;</TD></TR><TR><TD CLASS="quote">

saying that a 15 REQUIRES more power then a 12 is plain flat out wrong - the larger the sub, the more efficient it will be, therefore it get's just as loud with less power. Now some larger subs can handle more power - which is great - but saying it NEEDS more is false imo....</TD></TR></TABLE>
It will require more current, power to respond as fast as a lighter smaller speaker.
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Old Sep 12, 2005 | 01:02 PM
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Default Re: (nsxxtreme)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxxtreme &raquo;</TD></TR><TR><TD CLASS="quote">It will require more current, power to respond as fast as a lighter smaller speaker.</TD></TR></TABLE>

have not thought about it this way - we are assuming the same motor?
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Old Sep 12, 2005 | 02:35 PM
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Default Re: (rcurley55)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rcurley55 &raquo;</TD></TR><TR><TD CLASS="quote">

have not thought about it this way - we are assuming the same motor?</TD></TR></TABLE>
I would assume the same motor other wise it wouldn't make any sense.

I'm no speaker design expert so what I say isn't absolute.

Contrary to popular belief engineers don't know everything
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Old Sep 14, 2005 | 12:33 PM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

people get on my nerves, i see some assanine things posted here. okay first of all you have to know what you want, and what you like, thats what its all about. if its whats going to hit harder, or whats going to get louder, thats narrowing it down, and those are two seperate questions. i saw someone post osmething about 12+12=24 and 15+0=15, everyone thinks surface area - and sometimes wattage are everything. id be happy to back up to just about anyones two 12's or 15 whatever, and db drag.
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Old Sep 14, 2005 | 01:39 PM
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Default Re: Two 12" subs vs One 15" sub (Import_Dumbass)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Import_Dumbass &raquo;</TD></TR><TR><TD CLASS="quote">people get on my nerves, i see some assanine things posted here. okay first of all you have to know what you want, and what you like, thats what its all about. if its whats going to hit harder, or whats going to get louder, thats narrowing it down, and those are two seperate questions. i saw someone post osmething about 12+12=24 and 15+0=15, everyone thinks surface area - and sometimes wattage are everything. id be happy to back up to just about anyones two 12's or 15 whatever, and db drag.</TD></TR></TABLE>Some of the people here are far from newbz you may want to rephrase your statements in a more appropriate manner.
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Old Sep 14, 2005 | 06:24 PM
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Default Re: Two 12" subs vs One 15" sub (XaznkewlguyX)

if it makes a difference i had 2 12's running on 500wx2 and now i bridged my amp to power that 15 so im guessing its getting powered about 800w. i like the 15 it sounds nice
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Old Sep 14, 2005 | 06:29 PM
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Default Re: Two 12" subs vs One 15" sub (nsxxtreme)

is it a punch HX2 or a power HX2? big difference, 500w rms vs 1000w rms.
power hx2 has to be ina ported enclosure which is about the size of a sealed enclosure for 2 subs of the same size. wieght and size arent really going to be an issue with this if it is a power cause itll be about the same.
i have heard 15"s that sound great phoenix gold X-max in a small custom enclosure.
with 15"s the sound waves will take longer to form so ppl will hear u coming from greater distances, is this something you want?
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