fwiw, here's what I got from your input screen. It looks to be designed for kick duty, tuned ~64Hz and would have pretty good output at nominal 1500w peaks
(would you have a link to its plan?)
(would you have a link to its plan?)


@LION SQUAD SOUND - as an alternative you might ask Matthew Morgan J either at Diyaudio - or on Facebook at The High Order Quarter Wave Society for a Paraflex option to a scoop
High Order Quarterwave Society (DIY Bass A-Z) Public Group | Facebook
High Order Quarterwave Society (DIY Bass A-Z) Public Group | Facebook
Hi LION SQUAD SOUND - is your intent to build a kick-bin? - or a speaker which can play below 70Hz relatively flat? How high must it play? What are its size constraints?
A kick bin wasn’t what I was going after. I wanted to build a 21 inch hog scoop. But the problem that I am having is what is a hog scoop is it a TL design TH design or a rear loaded horn design.
the speaker described in your input screen has a "short" 1.25 meter path. With the speed of sound ~343M/s its quarter wave is 343/(1.25*4) ~69Hz.
Below is the input for an 18" driver hog scoop and its path is roughly twice of your input
Can you post a drawing or link to a drawing of the cabinet you want to examine with hornresp ?
Below is the input for an 18" driver hog scoop and its path is roughly twice of your input
Can you post a drawing or link to a drawing of the cabinet you want to examine with hornresp ?

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Google Image Result for https://www.freespeakerplans.com/images/stories/articles/hog_scoop/hog_scoop.jpg Basically this is the plans but scale it for a 21
thanks - If one scaled that by 1.17X to fit a 21" then the result would be awfully big and cumbersome https://i.imgur.com/7tXFqaq.png
Look at this Speakerplans discussion from a few years back on developing a practical 21" scoop
If you're able to move it or its stationary then you or someone can make a hornresp model and
see how it looks with the 21LW1400
21'' HOG SCOOP desing help - Speakerplans.com Forums - Page 1
Look at this Speakerplans discussion from a few years back on developing a practical 21" scoop
If you're able to move it or its stationary then you or someone can make a hornresp model and
see how it looks with the 21LW1400
21'' HOG SCOOP desing help - Speakerplans.com Forums - Page 1

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And that is why I see 21 in super scoops. Yeah I will stick with the super scoops since I my sound system will be mobile.
i dont recall any of the scoops from speakerplans reaching much, if at all, below 50hz. not sure what advantage theyre giving, but youre sacrificing extension.
Basically this is the plans but scale it for a 21
It's a TH.
GM
scaled 1.17:1, I get about a 2.8->2.85M path for a 21" version - roughly a 30Hz 1/4 wave.
one the model is established, 21LW1400 can be plugged into hornresp along with the scaled cabinet's width - then one can use a "wizard" (!) to examine the effects upon response from narrowing the whole cabinet - it may look better in some instances
one the model is established, 21LW1400 can be plugged into hornresp along with the scaled cabinet's width - then one can use a "wizard" (!) to examine the effects upon response from narrowing the whole cabinet - it may look better in some instances
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FWIW, did a quickie 18sound 21LW1400 parabolic TH tuned to ~40 Hz to 'hit/slam' at 50 Hz [or does it need to be higher], so considerably smaller than the 18" at ~237 L net and of course won't play as loud.
Note: driver may not physically fit, so S1 may need to be bigger.
GM
Note: driver may not physically fit, so S1 may need to be bigger.
GM
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GM - that's a fat little hog 😀 lots of punch - should handle 1500W peak with ~11mm @~56Hz movement. How would it translate to wood for LION SQUAD SOUND ? How might it sound?
21LW1400 would kinda work in a Karlson (lol) - scaling Acoustic Control's 115BK by 1.4
makes a K-coupler about the size of GM's parabolic TH - but tuning is somewhat below 40Hz
so needs to be tuned higher for punch

21LW1400 would kinda work in a Karlson (lol) - scaling Acoustic Control's 115BK by 1.4
makes a K-coupler about the size of GM's parabolic TH - but tuning is somewhat below 40Hz
so needs to be tuned higher for punch

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Dunno, don't have Excel loaded to use Brian's folding SS, but being parabolic will be simpler than the expos.
GM
GM
GM - that's a fat little hog 😀 lots of punch - should handle 1500W peak with ~11mm @~56Hz movement. How would it translate to wood for LION SQUAD SOUND ? How might it sound?
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Semi-inductance is going to change the response of that horn a bit. I've modified the sim to include some semi-inductance parameters I derived from the published impedance curve for the driver. They're not totally accurate (deriving them using ZMA data would be much better), but better than not using them at all.
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Hi Brian and GM - I was looking at scaling the posted hog scoop schematic by 1.17:1 for OP's 21LW1400 but goofed and entered things "ND-wise"
might you re-arrange this expansion for proper TH sim ?
that lossy LE sag looks right - (this is a 4.5" coil ?)
might you re-arrange this expansion for proper TH sim ?
that lossy LE sag looks right - (this is a 4.5" coil ?)
Attachments
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