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champaned_out
10+ year member
Senior VIP Member
lol funny thread...
just wondering from those that said JL is over rated... if JL's entire line up of products cost less would they be considered a good product?
because it seems like if you pay anywhere near JL's MSRP price all the haters will tell you their excuse of why JL blows... (i would never think about paying anything close of their MSRP price either, but i wouldnt say their shiet sucks just cause i cant afford it)
but im wondering if someone said they bought a brand new 13W7 for $300, would you haters still say the W7 is a shiety driver??
edit:
and cotjones i honestly, (with no disrespect intended) think you should re-think some of your posts.... theres a reason why theres about 15+ people ripping you a new @sshole
you've made me embarrassed to own a JL sub
just wondering from those that said JL is over rated... if JL's entire line up of products cost less would they be considered a good product?
because it seems like if you pay anywhere near JL's MSRP price all the haters will tell you their excuse of why JL blows... (i would never think about paying anything close of their MSRP price either, but i wouldnt say their shiet sucks just cause i cant afford it)
but im wondering if someone said they bought a brand new 13W7 for $300, would you haters still say the W7 is a shiety driver??
edit:
and cotjones i honestly, (with no disrespect intended) think you should re-think some of your posts.... theres a reason why theres about 15+ people ripping you a new @sshole
you've made me embarrassed to own a JL sub
That is an acoustic wave and it doesn't have to be the positive and negative peak but a phase difference between the two that causes interference. You need to use a microphone to measure acoustics.
ngsm13
5,000+ posts
BSEE
Sorry fellas, no more amusement tonight.
//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif
//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif.
nG
//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif
//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif.
nG
phantom240
5,000+ posts
ALL YOUR INTERNETZ
No. Thats called "Your phase setting is off you moron"
NOOOOOOOO he's banned? SHITCAKES. It was fun hearing his stupidity. Made me feel smarter.
leonsv
10+ year member
**DIABLO**
no one who has actual experience with a well set up w7 system is going to say that they ****. However, certain people make the w7 out to be the ultimate sub, which is far from the truth. If the 13w7 could be had for $300 I would be all over it. However, because they are far more expensive, I would never buy one over a si mag, aura ns series, fi q etc.
leonsv
10+ year member
**DIABLO**
I totally just saw that lol..... about time...
WhoSayWho?
5,000+ posts
Preston Caught a Predator
Oh shit, wait until Eugenics runs across you.
TheOtherSide
10+ year member
Member
Let's try and explain cancellation and wave interference and why an o-scope can't measure them at the source of the signal (amplifier):
I can try to explain cancellation this way, and yes this does correspond to an o-scope so bear with me. Let’s take a pool, the typical backyard variety. When a person dives in the pool, it makes a relatively small splash/wave. When they do a belly flop, the wave/splash is much larger. It is the same person, from the same height, but different waves. You can measure the force, velocity, etc of the person hitting the water and you can change them (much like you can add power with an amplifier to a subwoofer with the same specs). Problem is, the area the person presents to the surface changes the wave/splash characteristics, ala the more area you present to the water the bigger the waves, given everything else is kept the same.
Now if 2 people jump in the pool at different ends and everything about them (all the variables) is/are the same, weight, area hitting the water, speed, etc, the waves will interfere by getting larger but a small bit of cancellation will still exist or else they would be double the size of the original wave. You can't really predict where they will cancel without some serious math, theory, guesstimation, but the waves do interfere and cause cancellation. You can measure every aspect of the “person” and how they hit the water (the subwoofer and the amplifier power -- much like you would on a scope and by measuring T/S params) but the best way to reduce the cancellation that occurs is by not using things with different variables or characteristics. There are so many factors that influence cancellation that reducing the major variables such as amplifier power differences and different woofers (sizes, brands, etc) will yield the cleanest response. When you start messing with the big variables, you start experiencing major problems that can't be easily measured unless you have really expensive equipment. And yes, they will exhibit cancellation, even if you can’t hear it.
Last, remember you aim the box in a car to maximize the additive properties of sound waves, much like water waves. You are trying to achieve maximum addition and minimal cancellation. So if you can measure cancellation on an oscilloscope, rotating the box 90º won’t affect the sound at all because at the amp, it still ‘looks’ the same.
*If this is totally confusing, that is because I am not the best explainer*
I can try to explain cancellation this way, and yes this does correspond to an o-scope so bear with me. Let’s take a pool, the typical backyard variety. When a person dives in the pool, it makes a relatively small splash/wave. When they do a belly flop, the wave/splash is much larger. It is the same person, from the same height, but different waves. You can measure the force, velocity, etc of the person hitting the water and you can change them (much like you can add power with an amplifier to a subwoofer with the same specs). Problem is, the area the person presents to the surface changes the wave/splash characteristics, ala the more area you present to the water the bigger the waves, given everything else is kept the same.
Now if 2 people jump in the pool at different ends and everything about them (all the variables) is/are the same, weight, area hitting the water, speed, etc, the waves will interfere by getting larger but a small bit of cancellation will still exist or else they would be double the size of the original wave. You can't really predict where they will cancel without some serious math, theory, guesstimation, but the waves do interfere and cause cancellation. You can measure every aspect of the “person” and how they hit the water (the subwoofer and the amplifier power -- much like you would on a scope and by measuring T/S params) but the best way to reduce the cancellation that occurs is by not using things with different variables or characteristics. There are so many factors that influence cancellation that reducing the major variables such as amplifier power differences and different woofers (sizes, brands, etc) will yield the cleanest response. When you start messing with the big variables, you start experiencing major problems that can't be easily measured unless you have really expensive equipment. And yes, they will exhibit cancellation, even if you can’t hear it.
Last, remember you aim the box in a car to maximize the additive properties of sound waves, much like water waves. You are trying to achieve maximum addition and minimal cancellation. So if you can measure cancellation on an oscilloscope, rotating the box 90º won’t affect the sound at all because at the amp, it still ‘looks’ the same.
*If this is totally confusing, that is because I am not the best explainer*
WhoSayWho?
5,000+ posts
Preston Caught a Predator
Why do you always take our toys away?
Beat_Dominator
5,000+ posts
Yea, thats Mecha Godzilla
You can hook a microphone to an Osope //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Measurement mics need a power supply, and then of course they have a voltage output which you can connect to anything; however, to truly show cancellation I would like a system that will store the time domain and allow you to keep it in memory so you could play one driver, the other, and then both looking at both the phase and magnitude of the signal. Sure the new O-scopes can do this, but just like a spectrum analyzer you need to spend serious dough to get one.
Imtjnotu
5,000+ posts
Me Gusta Edition
so by this forums standards....
jl-over priced and better for less....so that means re is the same exact thing but puts an even more big dent in ur wallet?//content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif
jl-over priced and better for less....so that means re is the same exact thing but puts an even more big dent in ur wallet?//content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif
Imtjnotu
5,000+ posts
Me Gusta Edition
so fi is our winner then
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