New Pics of XXX and MX

[Feandil 10+ year member]

if any of thats true i think they went for the jackhammer approach to making a sub.......thats just dumb if true

LOL well you can trust me it's true... as it must be true... physics dictates the truth of it //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif... though I might be wrong about the actual power as I've never modeled it...

but generally 300g = old XXX power handling which isn't enough to reach this kind of excursion... so it must be bigger... which means a nice hefty 600g or so.... meaning 4kw or so... and that's pretty generous as the XXX needed a very large sealed and 2500w to reach full excursion

 

[InhumanAcura 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/needpics.gif.edd6d28e76618c28c46f343991bcced5.gif

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[Omarvelous 10+ year member]

youre an idiot. do you know anything about ported setups and their relations to excursion?

I was clarifying what Fendil said dumbass.... did u read what i said?

Do u know what a FING ? is?

He stated it would have to be sealed in order to see it's FULL Excursion.

EDIT: Atleast i thought he did, can't seem to find it, but that was why i added the several ???s none the less

Do ur reading!!

 

[Mr. Opportunist 10+ year member]

Tell scottie that they don't reach full excursion in a ported enclosure.
psssst: at 2002 finals he was bending the tensil leads up and breaking them off of the brahma x's //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

They reach full excursion, trust me.

it was fun watching his headliner fall off //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Omarvelous 10+ year member]

I don't know how I can explain any better...
large excursion means lots of power or a hugely light Mms which still doesn't get you to full excursion.... and power handling suffers hugely

IB assume something like the W7 to reach full excursion... or around 3kw-4kw without a box... and probably in any normal size sealed assume 4kw per sub

I kinda see what ur saying. I'd try to spit it in my own words, but i'd prob make an *** out myself.

But it would be sort of like an asymptote, like the more power the more closer to ful excursion, but at that point the power would b so great that it wouldn't be sensible or affordable for the normal folk, and the ported box doesn't help this......//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif ??

 

[Feandil 10+ year member]

I was clarifying what Fendil said dumbass.... did u read what i said?
Do u know what a FING ? is?

He stated it would have to be sealed in order to see it's FULL Excursion.

Do ur reading!!

with any resonable amount of power that is

Also assume to reach it sealed you need a huge box and more RMS than a normal car can supply...... not to say people won't be doing it though

 

[HotCarl 10+ year member]

inefficiency = teh poopzors.

 

[I want SExxx 10+ year member]

the twelve is like 16" deep IIRC
and you have to remember there are subs under this price that are in DIRECT competition to this sub... as far as top output...

to reach full excursion on something like this you'll need more than just a few kilowatts per sub

the reason is they have no way to keep MMs down and provide high power handling... so efficency suffers and they have to try and make up for it through BL...

you can tell from the motor size and height that you can expect around 30-40Tm of motor strength which means huge depth and motor size... also assume huge coils at least 4 layers...

to gain efficency you either increase motor strength or lower Mms.. .and motor strength only helps so much

if David wants something usable sealed (the only way you'll use this excursion PERIOD) he needs at least a QTS of .3... meaning that this thing is massively inefficent due to the extreme need for the high power handling which means... necessarily... an increase in Mms

don't get me wrong though...still a great sub.... might just want a Hifonics Goliath per XXX

First off I'm not trying to be an ***..... just clearing a few things up.

You may not need kw and kw to reach full ouput I personally watched an RL-S 12move MUCH more then it should be off 2400 in 4 cubes to 33hz. Specs and experience will tell us this. It's more of a box and tuning thing then power.....in fact the box and tuning is a much larger variable in excursion then power.

The BL will NOT be around 30-40 Tm period. You cannot simply tell how much BL a driver has because it does or doesn't have a big motor. take the old xxx 17 tm now go look at an LI 24tm. The reason of this is, listen people sorry to bust you bubble but, LINEAR TECHNOLOGIES KILL THE BL period end of discussion. Were probably talking under 20tm. When you cut away part of the a magnet, whether it be the coil or the motor, to flatten the BL it takes a lot of motor strength away from the resting point. YES you get much more stable force throughout the stroke, but the actual peak BL is MUCH MUCH lower then that of a conventional driver.

 

[Feandil 10+ year member]

First off I'm not trying to be an ***..... just clearing a few things up.
You may not need kw and kw to reach full ouput I personally watched an RL-S 12move MUCH more then it should be off 2400 in 4 cubes to 33hz. Specs and experience will tell us this. It's more of a box and tuning thing then power.....in fact the box and tuning is a much larger variable in excursion then power.

The BL will NOT be around 30-40 Tm period. You cannot simply tell how much BL a driver has because it does or doesn't have a big motor. take the old xxx 17 tm now go look at an LI 24tm. The reason of this is, listen people sorry to bust you bubble but, LINEAR TECHNOLOGIES KILL THE BL period end of discussion. Were probably talking under 20tm. When you cut away part of the a magnet, whether it be the coil or the motor, to flatten the BL it takes a lot of motor strength away from the resting point. YES you get much more stable force throughout the stroke, but the actual peak BL is MUCH MUCH lower then that of a conventional driver.

under 20Tm is questionable about efficency... and the RLP might be SIGINFICANTLY easier to get around excursion than this

you have to remember that there's a peak in excursion and in that RLP's situation if it was playing peak or below tuning I have no doubt ... now realize things like compression and that this has 2x the xmax... so think about what that means it will need given your example

motor size wasn't because of the looks... but rather because of how high the Mms must be at least generally... Qes will go up and to compensate (if they want a .4 QTS) you need to add BL... 30Tm is what I would have done I guess... however they might have done less... to keep QTS more "middle of the road" however efficency will suffer that much more

I can't imagine it having a low Mms... the coil itself must be a LOT longer just in general for this excursion... not to mention how high power handling needs to be so that it can reach full output

 

[I want SExxx 10+ year member]

RL-S the new one LMT driver not the RL-P. AND this hapened above tuning. And the BL is just simply not going to be that high on a linear motor (or coil in this situation), but well see. Its not easy to add BL especially on these linear motor drivers because they basically cut it in half by the gaps in motors, coils, w/e.

 

[Feandil 10+ year member]

RL-S the new one LMT driver not the RL-P. AND this hapened above tuning. And the BL is just simply not going to be that high on a linear motor (or coil in this situation), but well see. Its not easy to add BL especially on these linear motor drivers because they basically cut it in half by the gaps in motors, coils, w/e.

you can't beat efficency no matter how much you wish it's possible

if that 12 is really 80.5db/w ... which it is... then you're looking at needing a lot of power to get it moving

2400 watts IS a lot of power and 4 cubes isn't a small ported box

I'm getting around the peak above tuning (obviously) is 22mm one way or so...

but this isn't even close to the 38.5mm it HAS

THIS would take around 7500 watts RMS to reach full excursion around 41hz in that same box

THIS is what I'm talking about... even if the re xxx was 85db/w (generous) it would need around 12,000 watts in that SAME box ported to reach full excursion above tuning or around 7hz below tuning

just messing around a little with the 12" XXX with the needed Mms and 21Tm seems about right for it... and the efficency is around 84db/w for the 12....

this is with a very very very high Fs around 33hz... which would be pointless for a sub with that much excursion... I expect 25hz which means more mms which means more of a need for high BL

so... loosing efficency there as well... I'm seeing 10,000 watts needed even at 85db/w with a super tight suspension to reach full excursion in around 3 cubes sealed

these are the nicest specs I can get with the Fs low enough.... even 28hz Fs it needs 9kw...

laughably this all is valid ONLY if there is no power compression... which of course would be ungodly huge... and that excursion is only valid at less than 24hz...

 

[80INCHES 5,000+ posts]

i'm still buying 2 rl-s 12's and slapping it in a bandpass and having each 12 in a .9cube sealed box playing into a 1.75 ported box tuned at 40hz..and the orion 2500d will be throwing out power at 1.75ohms

how bout those apples

80

 

[Feandil 10+ year member]

i'm still buying 2 rl-s 12's and slapping it in a bandpass and having each 12 in a .9cube sealed box playing into a 1.75 ported box tuned at 40hz..and the orion 2500d will be throwing out power at 1.75ohmshow bout those apples

80

those subs are some of the most inefficent things I've ever seen

I bet 2 Type R's would be louder... or SX's... or AE AV's etc

 

[Defconx3 10+ year member]

What I find funny is that theres a debate going on about a subwoofer which we know almost nothing about technical wise. Wait till RE releases the specs, then comment on its design.

Oh, and IBTL //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[80INCHES 5,000+ posts]

i'm just putting them in a box to see how it does..i'm not trying to be the loudest thing in the world..so if there inefficient..its ok after all......its only me that will be listening to music not the whole block

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