18sound 21LW1400 enclosure

The efficiency numbers are at 0.5Pi (4 enclosures).
DMB will have to explain why the Power Conversion Efficiency is so high.

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Hi! I need a little help 😀 I did some modifications to my calculations, so here are the new results. Now, i attached a photo which is the design that im thinking about to build. The problem is that i do not really know where s1 s2 s3 etc starts and where it ends. If someone may use some colors to draw on this design in order help me...

And about that phase shift, i don't know how to deal with it; i tried shortening the port but it's not worth it in my opinion
 

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So you choose a scoop design?,but why that one? , there is wasted space in the areas shown , that kind of "drawings" are not made anymore because the not optimal use of wood.

There are so many designs already done that were built a lot.

Scoops work in groups of 4 or more just so you know.

making 2 will not work as those were designed.

If I a was you I better choose a proven design
Tested by people who actually built, tested and pulled freq sweeps with a mic.

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BP1Fanatic and s4, s5? Btw, this photo you posted does not make sense for me, if you can make a short explanation it would be very very helpful for me to understand the concepts better... i tought that these S are like this:​

 

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If you are not able to change the LW1400 to a suitable speaker, than you are wasting a lot of wood for them othorns.

Better order a pair of recone kits from 18sound, but please don't cry if the burned coil melts deep into the super tight gap from the 1400.
 
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Haaa nice to see you Adrew
how do you like em compared to other designs ?

at least somebody post here from the other side ! 😆

Hey is my meds or is real ?

That Paraflexer's don't post but on their home board only
they do not share their stuff on this board
not even on speakerplans or other sub cabinet boards.

is that a type of trend or cult ?
colateral damage of the ozone layer depleting
or global warming ? or both ?😁🍻
 
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