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DD 9900 3500 vs JL W7 power handling

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Old 06-03-2005, 05:04 PM   #1
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DD 9900 3500 vs JL W7 power handling

digital designs ddaudio.com 9915 vs jl w7 jlaudio.com


dd specs.
Model
9915b


Series
9900b


Woofer Diameter
15"


Voice Coil Diameter
3"


Voice Coil Type
4 layer


Magnet Weight
300 oz


Cone Type
5-layer Hand Laid Kevlar/


Power Handling RMS
1500


Power Handling Music
3000


Power Handling Peak
6000

jl specs






dd 3510 even kills a w7


Model
3510d


Series
3500d


Woofer Diameter
10"
"

Voice Coil Diameter
3"


Voice Coil Type
DVC


Magnet Weight
170 oz


Cone Type
Synthetic Fiber Blend


Power Handling RMS
1000


Power Handling Music
1600


Power Handling Peak
3200
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Old 06-03-2005, 05:06 PM   #2
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Re: DD 9900 3500 vs JL W7 power handling

sorry to whore, i just laugh when so many people think a w7 is a top of the line sub.
its common to see 12w7s pop with 1000 watts.
Old 06-03-2005, 05:10 PM   #3
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Re: DD 9900 3500 vs JL W7 power handling

how can you go wrong with a pair of dd's
Old 06-03-2005, 05:16 PM   #4
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Re: DD 9900 3500 vs JL W7 power handling

i think you're confusing power handling with quality kris. power handling is fine to a point, but there is a lot more to "top of the line driver" than just power handling. as an example, yes, the 9915 can take a lot of power, but it also has a 300 oz magnet, which is much heavier than the 13W7. obviously, the lighter the magnet and general assembly, the less power it takes to move it. also, the W7 sounds a hell of a lot better than any DD sub i've heard. is DD a great spl driver? obviously, they take home all the awards at every show. does it stand a chance in any sound quality competitions? not at all. just because the W7 is not an spl award winning driver does not mean that it is not a top of the line sub. the W7 can get loud AND sound good, which is more than can be said of DD's drivers.

also, i noticed you said it's common to see a 12W7 pop with 1000 watts. i was just curious as to where you got that number from. i know of many people using 1000/1's (an underrated 1000 watt amp) on their 10W7's, 12W7's, and 13W7's. i have also seen quite a few phoenix gold xenon x1200.1's used, so if the woofer is encountering large problems at 1000 watts, i think that perhaps the concern should be based more on what the user is doing wrong rather than what the sub is doing wrong.

i wanted to do a comparison of linear displacement, but apparently DD is the only company who feels that xmax is not an important number. again, they are a great spl woofer, but to say that the 9900's, 9500's, 3500's or any woofer period is better than the W7 because of power handling is just asanine.

Last edited by DevilDriver; 06-03-2005 at 05:20 PM.
Old 06-03-2005, 05:32 PM   #5
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Re: DD 9900 3500 vs JL W7 power handling

of course i am not talking about sq. people dont usually buy these subs and huge 1000+ watt amps for sq.

to be totally honest i am not into sq much from subs.

i like a good front stage with very good mid bass for daily driving with my ''spl'' sub level turned down.

then when i want, i can turn the level of the sub up.

ya many jl dealers reccomend 1 jl 1000 per pair of 12w7s. they seem to last alot longer that way. lol

before anyone thinks i am hating on jl. thats not the case. i have never been beat at a comp by any jl product.

i have owned almost every jl sub out there. they just suck balls for power handling.

people should not try to use a w7 for spl flat out.
Old 06-03-2005, 05:35 PM   #6
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Dragginbody
i have owned almost every jl sub out there. they just suck balls for power handling.
again, that has very little to do with the quality of the driver.
Quote: Originally Posted by Dragginbody
people should not try to use a w7 for spl flat out.
no disagreement there, but you said that you didn't think a W7 is a top of the line sub, which it is. just because you don't dig sq doesn't mean there aren't a ton of people out there who do.

Last edited by DevilDriver; 06-03-2005 at 05:36 PM.
Old 06-03-2005, 05:45 PM   #7
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Punk0Rama
again, that has very little to do with the quality of the driver.

has everything to do with the quality of the sub!
Old 06-03-2005, 05:48 PM   #8
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Dragginbody
has everything to do with the quality of the sub!
nope, sorry.
Old 06-03-2005, 06:23 PM   #9
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Re: DD 9900 3500 vs JL W7 power handling

What exactly does power handling have to do with quality? Another case of someone trying to simplify a complex situation (all the design perameters that going into a working subwoofer) down to something in simple bite size pieces. You cannot compare 'quality' of drivers by one single spec alone, be it xmax, efficiency or power handling.

The problem here is Dragginbody is being vague. Intentionally Id say, as he really seems to have no specific point. I know because I looked. Any specific point on how power handling is a direct sign of a woofer's abilities would be easily discredited. So all we're given is some raw data and an assumption we'll jump to the same false conclusions Dragginbody has.

While DD 9500's (for example) are potent SPL drivers that have proven themselves in the lanes for many years thanks to their tank-like build quality and toughness, but their linear excursion (xmax) is quite pathetic compared to a W7. A 9500 would take a ton more abuse than would a W7 in some SPL setup, but a W7 would hand a 9500 its ass in every other regard (output in sealed systems, output across the entire freq range subs play for music, vastly better sound quality, etc). DD 9500's and 9900's are built for SPL rigs with vented setups. W7's are not designed for that purpose, at all. To compare them by that one single spec (power handling) and ignore all the rest (linear excursion, efficiency, etc) simply gives a false perspective of the situation. In other words, you are unfairly comparing two subs that aren't even designed for the same purpose.

This thread is useless at best.
Old 06-04-2005, 06:11 AM   #10
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Re: DD 9900 3500 vs JL W7 power handling

Quote:
two subs that aren't even designed for the same purpose.


thats basically my point. w7s suck for spl. not made for it not intended for it. so dont try to use them for it.
Old 06-04-2005, 06:47 AM   #11
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Dragginbody
thats basically my point. w7s suck for spl. not made for it not intended for it. so dont try to use them for it.
but for a sub designed to do SQ it does do some pretty decent #'s . though for Reality SPL and Drive-By SPL ......watch out for the W7's .

but in all honesty ......i would rather run an RE sub over DD any day . louder with less work , yep .....put me on that bus .

Last edited by xtc_customs; 06-04-2005 at 06:53 AM.
Old 06-04-2005, 01:53 PM   #12
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by xtc_customs
but in all honesty ......i would rather run an RE sub over DD any day . louder with less work , yep .....put me on that bus .
MT, mmmmm. just wait till people get more experience with that and more people start using them, then we'll start to see some higher number's out of RE products.

and just because i love the video so damn much:

HERE
Old 06-04-2005, 02:40 PM   #13
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Re: DD 9900 3500 vs JL W7 power handling

if you heard my 2 12w7's i would change your mind i am very very loud and it sounds awsom at the same time
Old 06-04-2005, 04:39 PM   #14
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Dragginbody
thats basically my point. w7s suck for spl. not made for it not intended for it. so dont try to use them for it.
So are you gonna make a post on how DD 9500/9900's suck for music so dont use them for it either?
The point of this post to me seemed to be one of trying to correlate power handling directly with speaker quality. Next time think about, come up with, and write down a nice little summary of your point, instead of just posting raw data. We wont have to guess at your point, if you'd just tell us.
Old 06-04-2005, 08:51 PM   #15
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by ibanez691
if you heard my 2 12w7's i would change your mind i am very very loud and it sounds awsom at the same time
and that is my point right there: the W7's can sound loud and still sound good. correct me if i'm wrong here DJ, but you're at what, a 147ish on the TL? that's pretty damn good to hit a number like that and still sound good. i've heard DD's that hit 135 and sound like shit, so i would take the W7's any day. of course, that is my own preference. i also put little to no weight into power handling so i guess i must be wrong? just buggin ya kris.
Old 06-05-2005, 02:44 PM   #16
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Re: DD 9900 3500 vs JL W7 power handling

best i can get out of it on the new sensor is 148.7 and sounding good while doing it
Old 06-05-2005, 03:23 PM   #17
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by ibanez691
best i can get out of it on the new sensor is 148.7 and sounding good while doing it
I always thought u had 3 w7s.
Old 06-05-2005, 04:06 PM   #18
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Punk0Rama
MT, mmmmm. just wait till people get more experience with that and more people start using them, then we'll start to see some higher number's out of RE products.

and just because i love the video so damn much:

HERE

whats in that truck its pretty impressive
Old 06-05-2005, 04:09 PM   #19
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Re: DD 9900 3500 vs JL W7 power handling

It think its either 6 or 8 RE XXX somethings. I can't remember but basically the whole bed is full of stuff.
Old 06-05-2005, 08:37 PM   #20
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by ohsolos10
whats in that truck its pretty impressive
i believe 8 15" XXX's in a blowthrough. 155 db's at 32 hz = heaven.
Old 06-06-2005, 11:30 AM   #21
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Punk0Rama
i believe 8 15" XXX's in a blowthrough. 155 db's at 32 hz = heaven.

Actually its only 8 12's (lol only)
heres the other vid of it
http://www.realmofexcursion.com/vide...%20truck/6.wmv
Old 06-06-2005, 01:16 PM   #22
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Re: DD 9900 3500 vs JL W7 power handling

IM deaf mysef and heard of dj's system, I was pretty impressd by it and heard 9500mtx or higher modelnot sure exactly and it sounded sh111111tttttty andd dj's sub which sounded good and I loved the bass out of it and I would say its one of the loudest I've felt and it was pretty cool to feel vibration thru my ears and definitely lookn forward for new system in the truck(blow thru) I intend to make people's ear bleed wit the setup, in my town and want people to kno that its deaf guy that's runnin all the noise in town

Last edited by What?; 06-06-2005 at 01:23 PM.
Old 06-06-2005, 02:30 PM   #23
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Badarse98sdime
IM deaf mysef and heard of dj's system, I was pretty impressd by it and heard 9500mtx or higher modelnot sure exactly and it sounded sh111111tttttty andd dj's sub which sounded good and I loved the bass out of it and I would say its one of the loudest I've felt and it was pretty cool to feel vibration thru my ears and definitely lookn forward for new system in the truck(blow thru) I intend to make people's ear bleed wit the setup, in my town and want people to kno that its deaf guy that's runnin all the noise in town
omg that is so funny for some reason. I can see you know getting out of your truck in like a parking lot after coming through bumping and guy asks you what kind of system you got and your like "huh!!! I can't hear you I'm deaf"
Old 06-06-2005, 03:59 PM   #24
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Badarse98sdime
IM deaf mysef and heard of dj's system, I was pretty impressd by it and heard 9500mtx or higher modelnot sure exactly and it sounded sh111111tttttty andd dj's sub which sounded good and I loved the bass out of it and I would say its one of the loudest I've felt and it was pretty cool to feel vibration thru my ears and definitely lookn forward for new system in the truck(blow thru) I intend to make people's ear bleed wit the setup, in my town and want people to kno that its deaf guy that's runnin all the noise in town
any plans on what you're going to be using equipment wise? blow through =
Old 06-06-2005, 04:33 PM   #25
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Re: DD 9900 3500 vs JL W7 power handling

ya in havasu matt had to stand a few feet away or it hurt his ears and hes deaf lol my shit is loud thats for sure . and thats gonna be funny
Old 06-06-2005, 07:52 PM   #26
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Re: DD 9900 3500 vs JL W7 power handling

heh yah its loud, when I was inside I cud hear lil then walk around n didn't hear it, then see how far ill be able to feel, pretty sick

neil, IM learnin more bout blow thru, but I figure IM goin wit DD subs, CDT comps, phoenix gold amp, n figurn out which model to go with for the subs then able figure out which amp to pick...
Old 06-07-2005, 06:21 AM   #27
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Re: DD 9900 3500 vs JL W7 power handling

Do the blowhrough man.....youll love it. God knows I love mine. I just have to figure out how to stuff 2 more 13w7's and two more RF 2001bd's in a stepside bed
Stepside bed room>me

DJ- What size is your box and what are you tuned to, if you don't mind me asking?

Last edited by genx-treme; 06-07-2005 at 06:23 AM.
Old 06-07-2005, 08:13 AM   #28
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by Punk0Rama
and that is my point right there: the W7's can sound loud and still sound good. correct me if i'm wrong here DJ, but you're at what, a 147ish on the TL? that's pretty damn good to hit a number like that and still sound good. i've heard DD's that hit 135 and sound like shit, so i would take the W7's any day. of course, that is my own preference. i also put little to no weight into power handling so i guess i must be wrong? just buggin ya kris.




lol. i really dont care, i was just bored and thought more of the jl guys would be in here defending their subs.
Old 06-07-2005, 08:13 AM   #29
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by ibanez691
if you heard my 2 12w7's i would change your mind i am very very loud and it sounds awsom at the same time
this was not a serious thread! gotcha!
Old 06-07-2005, 09:01 AM   #30
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Re: DD 9900 3500 vs JL W7 power handling

yea JL dammit! haha, maybe i will run those subs now and just bag the thing later on in the summer......

chappy
Old 06-07-2005, 11:11 AM   #31
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Re: DD 9900 3500 vs JL W7 power handling

Well for one thing draggin body you are comparing a 15" to a 10"

Of course the DD is gonna blow it out of the water. Compare the DD 12" to the JL 12", then you're argument will make more sense.
Old 06-07-2005, 11:02 PM   #32
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Re: DD 9900 3500 vs JL W7 power handling

I personally have 1 12 w7 and 1 1000/1 and if you heard mine you'd be changed too.

on the brand new termlab for 2005 which is rated at 5-6 db lower than last years, I hit a 142.7 at a sponsered and registered USACI event in the 900-1800 stock class with 1 12. I konw its not an spl woofer but show me another SQ woofer that can still produce that type of pressure levels.
Old 06-07-2005, 11:03 PM   #33
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Re: DD 9900 3500 vs JL W7 power handling

the sensor t-lab has been the same for the past 2 years not new for 05 but it is 5-6 down from the old t-lab mics
Old 06-07-2005, 11:04 PM   #34
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Re: DD 9900 3500 vs JL W7 power handling

so still if you estimate using the old one, a single w7 would hit roughly around 148-149 for a pure SQ woofer.
Old 06-08-2005, 12:47 AM   #35
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by BlaziN.dB's
so still if you estimate using the old one, a single w7 would hit roughly around 148-149 for a pure SQ woofer.
yeah, but that's why people use the new TL, lol.
Old 06-08-2005, 01:16 AM   #36
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Re: DD 9900 3500 vs JL W7 power handling

haha good point
Old 06-08-2005, 01:43 AM   #37
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by BlaziN.dB's
...show me another SQ woofer that can still produce that type of pressure levels.
RE XXX, for one. Granted there aren't many, but there are other "SQ" subs that can hang with a W7. Nothing taken away from the W7's performance however, they are one of the best no doubt.
Old 06-08-2005, 01:50 AM   #38
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Re: DD 9900 3500 vs JL W7 power handling

finally heard a XXX a few weeks ago . ......i must say i am not a fan on XBL ^ 2 subs . too much motor noise for me . that is the one edge i see that the W7 has . other than that they are pretty much even .

now given in a trunk install the motor noise would be irrelavant . but i have an X cab .....all i want is bass , no motor noise .
Old 06-08-2005, 07:05 AM   #39
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Re: DD 9900 3500 vs JL W7 power handling

Strange conclusion. The xbl^2 design does not include anything that would add extra motor noise, nor does the xxx have any unusually high degree of it (that Ive heard with a few installs). Ive not heard them inverted in an extended cab. But then, any sub would likely have audible motor noise in that situation.

xbl^2 does have its own sound 'signature' though, which is a distinct lack of (BL) distortion. Eventhough its technically more accurate, some people find the sound 'strange' because they are use to the distortion eminated from the traditional speakers they've listened to their entire lives. I don't see where this would be construed as motor noise though.

Last edited by audioholic; 06-08-2005 at 07:09 AM.
Old 06-08-2005, 04:07 PM   #40
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Re: DD 9900 3500 vs JL W7 power handling

i have honestly never been in a vehicle where the music was quiet enough that i could hear any motor noise with the XXX. and the 12" and 15" brahma's that i heard didn't show any additional noise (although the 15 had some port noise, that is unrelated to the motor itself) at any sound level and they are xbl^2 as well. maybe you just got a bad install/motor?
Old 06-08-2005, 10:57 PM   #41
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Re: DD 9900 3500 vs JL W7 power handling

granted it might have been in the install .....but i have seen consistantly great installs from this guy time after time . could have been a bad woofer . i dunno .
i just sat down and listened . i heard distinct motor noise at mid to high volumes . i cant hear that with my W7's until i reach high volume , but at that point its still pretty quiet .
so just with my 1st experience with xbl^2 woofers i can say i'm impressed , they just seem to have a charactoristic i dont like .
i'll give them a listen in another install sometime just to be sure . i know a guy around here that really wants a set of those . he does have the cash so i figure it will just be time before i get another listen .
Old 06-09-2005, 01:28 AM   #42
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Re: DD 9900 3500 vs JL W7 power handling

i knew this would turn into a cool thread.
Old 06-09-2005, 01:34 AM   #43
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by xtc_customs
granted it might have been in the install .....but i have seen consistantly great installs from this guy time after time . could have been a bad woofer . i dunno .
i just sat down and listened . i heard distinct motor noise at mid to high volumes . i cant hear that with my W7's until i reach high volume , but at that point its still pretty quiet .
so just with my 1st experience with xbl^2 woofers i can say i'm impressed , they just seem to have a charactoristic i dont like .
i'll give them a listen in another install sometime just to be sure . i know a guy around here that really wants a set of those . he does have the cash so i figure it will just be time before i get another listen .
Maybe we need to better define 'motor noise' in this thread. Under what circumstances do you hear motor noise from your W7? In a standard install (not an inverted in-your-face install) motor noise should basically never be audible.
Old 06-09-2005, 09:43 AM   #44
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Re: DD 9900 3500 vs JL W7 power handling

I have to agree with audioholic. I have the w7 and I play it a full volumes all the time and I never heard any type of motor noise what so ever. even at low HZ levels were the bass isnt as loud to the ears.
Old 06-09-2005, 12:36 PM   #45
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Re: DD 9900 3500 vs JL W7 power handling

2-10W7's , install is a 4.25 cube box after displacement , tuned to 32 , peaks at about 38-41 depending on the weather and other stuff . subs on the driver side and port on pass side .1.5" baffel , rest of box is 3/4" , interior braced and resined . not quite a standard install , box is a bit bigger than JL wants . but it does what i want it to do .
when i said high volumes i should have just said SPL comps . that is the only time when i can hear it . when i set everything back up for daily use i dont hear it anymore .
Old 06-09-2005, 08:15 PM   #46
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Re: DD 9900 3500 vs JL W7 power handling

i have a 6 cuft ported box tuned to 40 hz
Old 06-09-2005, 11:30 PM   #47
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Re: DD 9900 3500 vs JL W7 power handling

lol i just have the ho box tuned to 32.
Old 06-10-2005, 02:47 AM   #48
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Re: DD 9900 3500 vs JL W7 power handling

Running almost 8 tuned to 28 here
Old 06-13-2005, 08:41 PM   #49
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Re: DD 9900 3500 vs JL W7 power handling

Quote: Originally Posted by xtc_customs
2-10W7's , install is a 4.25 cube box after displacement , tuned to 32 , peaks at about 38-41 depending on the weather and other stuff . subs on the driver side and port on pass side .1.5" baffel , rest of box is 3/4" , interior braced and resined . not quite a standard install , box is a bit bigger than JL wants . but it does what i want it to do .
when i said high volumes i should have just said SPL comps . that is the only time when i can hear it . when i set everything back up for daily use i dont hear it anymore .
Strange. I dont really see motor noise being an issue in a vented non-inverted setup, again unless maybe the subs and/or port are very near the listener. Very surprised to hear you say its during SPL burps, as that should be a relatively high freq, and very loud, certainly drowning out any noise made by the moving parts within the motor or suspension.

Maybe what you are hearing is the motor bottoming out...? That nwould make more sense given its only at peak performance situations (SPL burps) and in a relatively larger box. This is not what's generally called 'motor noise' though (which is why I said we may need to define motor noise here). Motor noise is just the noise eminating from the speaker's moving parts as they... well as they move. The speaker's actual sound output should surpass so much so as to make it inaudible, unless the speaker happens to be in a special situation like inverted and in your face. Otherwise its just a non-issue really. The bottoming out thing could also explain the situation with the xxx you said. One issue with xbl^2 motors is because they do output so little BL distortion, its hard to recognize when you are coming close to overdriving the sub (bottoming it out etc). Ive heard many accounts of people pushing xbl^2 subs (like xxx, brahma, etc) to their limit vefore realizing it. I don't really consider this a negative effect however, as it is directly caused by a severe lack of distortion output under normal to even very high working conditions. You simply must know the limitations.
Old 06-13-2005, 10:06 PM   #50
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Re: DD 9900 3500 vs JL W7 power handling

i know the sub isnt bottoming .......its definate motor noise , of course the port is firing up about 1ft away from my ear .its not a clicking noise common with bottoming .
my peak freq is between 38 and 40 hz depending on the day .so its not a high note
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