want to beat jl w7's

[lucki17]

my friend has two 10" w7's in his blazer, they hit really hard but i want to out do it, what subs and amps do you guys recommend? i want somewhere around 2000 watts rms(more or less) preferably i would like 10's but 12's are alright, i can spend $1,200, but would like to pay less, please help me have a better system.

[sr20de4evr]

how much space do you have?

that will be pretty easy to beat, why do you want 10's though? You can beat his into the ground if you go with a pair of nice 15's, if you insist on 10's then you'll need probably 3 supersubs, which will break your bank (and your electrical system) once you add in amps.

[lucki17]

i have an 89' 240sx, i want to to make fiberglass boxes for the rear sides, im not opposed to 15's ive just not heard to great of things from them, what 15's do you recommend? and with what size amp?

[sr20de4evr]

A pair of ported XXX or Brahma 15's and a pair of Hifonics brutus 1500d's

I'm not sure if you'd be able to fit that in your trunk though, if not a single ported XXX or Brahma 15 on a brutus 1500d should be able to take it as well. Are his w7's ported?

[CBFryman]

Originally Posted by lucki17

my friend has two 10" w7's in his blazer, they hit really hard but i want to out do it, what subs and amps do you guys recommend? i want somewhere around 2000 watts rms(more or less) preferably i would like 10's but 12's are alright, i can spend $1,200, but would like to pay less, please help me have a better system.

1200 for just the low end? try this...

2 DD 2512's (500w RMS, 1000w music, 2000 peak) $199.00 each
Hifonics 1800D (1800w x1@1ohm) $449.00

so 400 for the woofers and 500 for the amp...$900....

$300 is enough to buy the MDF, a box of dry wall screws, some silicone sealant (chaulking), screw the fiberglass....its a pain in the ass, the nesicary wire, fuses, active cross over, and a good set of RCA cables....ported ofcorse and tune to 26Hz...though WinISD does not have specs on Digital Designs 2500 series they do on the old 3000 series so i used it as an example....i also used a JLaudio 10W6 since it does not have specs on a W7 either...and im too lazy to research and enter all the specs into WinISD...i dont know if it will be massively louder than the JL's but i have a feeling they wil lbe louder...

[Haibane]

I wouldn't go dd unless you only want spl... and little quality. those are made for spl...

[Navy I.C.]

Originally Posted by lucki17

my friend has two 10" w7's in his blazer, they hit really hard but i want to out do it, what subs and amps do you guys recommend? i want somewhere around 2000 watts rms(more or less) preferably i would like 10's but 12's are alright, i can spend $1,200, but would like to pay less, please help me have a better system.

wow 2000 watts. first off, your going to need about 150a from your alt just for your subs...then you'll want to fight fire with fire meaning, because of their overroll design, 10W7's have the same cone area of 12" subs, so forget about any other pair of 10's. your probably going to need at least a pair of 12's, for starters, and then your going to get into needing the right amp.

[sr20de4evr]

lol, the 10w7s do have more surface area than most other high excursion 10's, but no where near the surface area of a 12.

Anyway, a single 15" supersub will be able to take them pretty easily. A 15" XXX has 50% more linear displacement than his pair of w7s.

[Navy I.C.]

When you measure from the center of the surround roll on one side to the center of the surround roll on the other side,
you get your effective piston area. This piston area times the subs excursion equals it's displacement capability (sd),
which is directly related to it's ability to get loud. The problem with big surrounds is that they begin to encroach on the
effective piston area of the driver. For example, a speaker with a medium-sized roll (like a 12W3v2) has an effective piston
area of 81.52 square inches. Compare this to a fat-surround 12-inch woofer which has a piston area of 69.07 square inches,
(15.2 % less effective piston area than a 12W3v2.)
To overcome this loss, the fat-surround woofer has to produce more excursion to displace the same air as the 12W3v2
(and will require more power to do so).

now lets talk about the (sd) of a 10W7 = 59.8 square inches for one sub or 119.6 for the two sub setup in question.
lets compare those numbers to the (sd) of the adire brahma (10" = 46.5) (12" = 67.58) (15 = 116.09)

A lot of people don't like JL because of their popularity. If you're the technical type, crunch the numbers yourself.
I'm a show and prove type, so I normally say f_ck the numbers, just plug the muthaf_cka's up and listen up.

[Haibane]

I agree with your last statement. I like JL, but I know many people who will say they don't do as much as others on the SQ. I am not a big SPL buff... a 15 of anything is enough for me

[Navy I.C.]

that's the reason I chose one 13W7. beleive it or not, it has the same (sd) of a fifteen, with the speed and accuracy of a twelve...

[Haibane]

I like my 15xxx better than the 13w7 to be honest with you. They are about the same cost if you buy both from a dealer anyhow

[CBFryman]

Originally Posted by Haibane

I wouldn't go dd unless you only want spl... and little quality. those are made for spl...

dude said he wnated you out bass his buddy with teh JL...and the reson DD is used mostly in SPL cars is because they have great SD...and great realworld powerhandleing....if you ask me most DD subs are UNDER rated...but the non pure spl woofers (DD's pure SPL woofers are the 9100-9900 series) DD 10's and 12's are jsut as acurate if not more acurate than RE HF's...dont get me wrong i love RE just as much as DD...and you saying DD has little quality....its nearly impossible to completely kill a DD3500 series woofer if it has been properly broken in....and if it does blow and you wernt over powering it (it takes a mighty big amp to over power thoes puppies also) just send it back to DD and have it re-coned for free....but if it does you might as well spend 50 USD and get ir carbon, kevlar, hemp coned...the original cones are great and light wieght and very responsive...but the carbon, kevlar, hemp cones are siffer and stronger... DD is a great privetly owned company....wow im starting to sound like im sponsored by them...lol

[sr20de4evr]

Originally Posted by Navy I.C.

When you measure from the center of the surround roll on one side to the center of the surround roll on the other side,
you get your effective piston area. This piston area times the subs excursion equals it's displacement capability (sd),
which is directly related to it's ability to get loud. The problem with big surrounds is that they begin to encroach on the
effective piston area of the driver. For example, a speaker with a medium-sized roll (like a 12W3v2) has an effective piston
area of 81.52 square inches. Compare this to a fat-surround 12-inch woofer which has a piston area of 69.07 square inches,
(15.2 % less effective piston area than a 12W3v2.)
To overcome this loss, the fat-surround woofer has to produce more excursion to displace the same air as the 12W3v2
(and will require more power to do so).

now lets talk about the (sd) of a 10W7 = 59.8 square inches for one sub or 119.6 for the two sub setup in question.
lets compare those numbers to the (sd) of the adire brahma (10" = 46.5) (12" = 67.58) (15 = 116.09)

A lot of people don't like JL because of their popularity. If you're the technical type, crunch the numbers yourself.
I'm a show and prove type, so I normally say f_ck the numbers, just plug the muthaf_cka's up and listen up.

I don't know what you're trying to prove, yes a pair of 10w7s has more surface area than a single brahma 15, but the Sd is NOT the displacement, it's the surface area. And guess what, the brahma 15 has 30% more linear excursion than the 10w7, and as a result it has much more linear displacement. 3.55L for the 2 10w7 and 4.34L for the Brahma 15 since you're so insistent on comparing numbers.

And no the 13w7 does not have the same surface area as a 15, your JL boner is bigger than the damn eiffel tower, do some research.

[CBFryman]

i like this guy prroving that JL isnt the end all woofer...