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21 inch compatible driver list

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RealitySound View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RealitySound Quote  Post ReplyReply Direct Link To This Post Topic: 21 inch compatible driver list
    Posted: 20 December 2018 at 1:13am
Slowly compiling a list of 21 inch drivers (now that they are becoming alot more common) Thought I would share as I add to it.....

 21’s                    AES   SENS     BL    FS      QES   QTS     VAS   XMAX


18SOUND

LW1400               1500    99      33.5   28     .24    .235     385     9.5

21NLW9601         1800    96       43     37      .31    .29      175     14

B&C

21SW152             2000    96      32.5   32      .31    .3        200      15

21DS115              1700    99      40.8   30      .24   .23       269      15

21iPAL                  2500   99      19.1   37      .22   .21       155      22

BEYMA        

21PW1400Fe         1400   98.5     28.2   30     .36    .34      401      10

21LEX1600Nd        1600   99.5      33    30      .29   .27       394     13

CELESTION

NTR21-5010JD     1600    98       32.03  30.2    .3     .29     341      9

EMINENCE 

NSW6021            2500    97      33.79   29HZ   .31    .31    224     21


LAVOCE

SAN214.50           1700   98.5     39     30      .28    .26     226     15.5

P-AUDIO

SD21-2000N         2000    98     43.5     29     .22     .22     329      10

PD

PD2150                 1000   98      37.4   29.5    .28    .27     309     10.5

PDN.2151              1000   98     35.8   31.4    .28    .28     303     10.5

PRV

21SW4000-NDY-2  2000    97     24.3   30.8     .28    .28     284      15

21SW3000-NDY-4  1500    98     26.6   31.4     .35    .34     337    13.25

RCF

LF21X451            2000    97       30.5   30     .39    .37     385     13.5

LF21N451            1500   98.5     34.5   30     .27    .26     375     13.2

LF21N551            2000    97        39     35     .35    .33     200      15





Edited by RealitySound - 12 September 2019 at 12:19am
When you gonna send me some $$ mate ?
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gen0me Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 1:33am
Xmaxes are written in different standards.
I appreciate every like :)) https//www.facebook.com/genomesoundsystems
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 1:43am
Originally posted by gen0me gen0me wrote:

Xmaxes are written in different standards.
....there's always one!

He's listing manufacturer quote TS para's. Let's not argue the toss ah




If it sounds like a gorilla is trying to escape, turn it down.
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RealitySound Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 1:47am
+/- mm inna?
When you gonna send me some $$ mate ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Marvin Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 3:36am
I will update you with the RMJ 21" Turbomax available
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 10:03am
Originally posted by mini-mad mini-mad wrote:

Originally posted by gen0me gen0me wrote:

Xmaxes are written in different standards.

....there's always one!

He's listing manufacturer quote TS para's. Let's not argue the toss ah






Well yes actually, let’s - because if you try and sim them like this you’ll get incorrect results. It’s not exactly difficult to adjust so they’re using the same standard. Why post data if it isn’t useful?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 12:56pm
Originally posted by toastyghost toastyghost wrote:

Originally posted by mini-mad mini-mad wrote:

Originally posted by gen0me gen0me wrote:

Xmaxes are written in different standards.

....there's always one!

He's listing manufacturer quote TS para's. Let's not argue the toss ah

Well yes actually, let’s - because if you try and sim them like this you’ll get incorrect results. It’s not exactly difficult to adjust so they’re using the same standard. Why post data if it isn’t useful?
I don't know... to upset people who just like to winge?

If you don't like them, don't read them. Trying to be offended by printed numbers seems a little extreme...
If it sounds like a gorilla is trying to escape, turn it down.
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RealitySound Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 12:58pm
Originally posted by gen0me gen0me wrote:

Xmaxes are written in different standards.

which ones?
When you gonna send me some $$ mate ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 1:23pm
Originally posted by mini-mad mini-mad wrote:

Originally posted by toastyghost toastyghost wrote:

Originally posted by mini-mad mini-mad wrote:

Originally posted by gen0me gen0me wrote:

Xmaxes are written in different standards.

....there's always one!

He's listing manufacturer quote TS para's. Let's not argue the toss ah

Well yes actually, let’s - because if you try and sim them like this you’ll get incorrect results. It’s not exactly difficult to adjust so they’re using the same standard. Why post data if it isn’t useful?

I don't know... to upset people who just like to winge?

If you don't like them, don't read them. Trying to be offended by printed numbers seems a little extreme...


Eh? Nobody is offended. We’re just pointing out a relatively minor mistake and how it can be rectified in the name of helping people out with their research.

Why are you so defensive? If you don’t like our comments perhaps don’t read them? That ridiculous statement cuts both ways.

@RealitySound: B&C use a different method, see https://www.bcspeakers.com/resources/faq-frequently-asked-questions/

Quote This is true if you compare by given Xmax. But again B&C is using a more positive formula for the Xmax then Eminence (or 18Sound) does.

B&C Xmax = (Hvc – Hg)/2 + unknown variable

18Sound = (Hvc - Hg)/2 + Hg/4

Eminence Xmax = (Hvc - Hg)/2

So as long you want to compare the B&C in a 'fair' theoretical competition you need to know it’s unknown variable… For example, you can compare the Eminence 3015LF to any RCF or 18Sound if you correct its Xmax to RCF/18Sound standards.

Xmax 3015LF (Hvc - Hg)/2 = 9,6mm

Xmax of the 3015LF by RCF/18Sound Standards= (Hvc - Hg)/2 + Hg/4 = 10,8mm


https://www.diyaudio.com/forums/subwoofers/127908-jbells-set-tapped-horns-45.html

Edited by toastyghost - 20 December 2018 at 1:32pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 1:44pm
We can agrue about whos formula is corerct tho.
The (Hvc - Hg)/2 one is technically most correct, but in reality the movement goes way beyond that point because of the inertion of the mass.
The (Hvc - Hg)/2 point is where the VC starts leaving the gap, but no cone suspension/magnet force is able to simply stop the vc at that precise point.
Some do it betetr, some worse, but at all of them the excursion simply dont stop there.

Marjan Milosevic
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https://www.facebook.com/pages/MM-Acoustics/608901282527713
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 2:08pm
I see one driver in this list with a qes of 0.39, another with a qts of 0.37.

Either of which, tells me, this list is not actually based on Scoop design experience, or research.




Global Depopulation - Alive and Killing.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RealitySound Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 2:09pm
Merely putting up T/S info found on their own sites as I shop around myself
When you gonna send me some $$ mate ?
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