Try PH1 mode. Freedom to move around on both sides of the driver creates a lot of opportunities to match distances between folds and exit and driver entries that that promotes some excellent results.
Think of swinging a pendulum and if it’s centered on the driver ay the start don’t ever fall in between a stroke or swing in any other interval distance to the next parallel/end point.
you could jump cross-sectional area and match up to the other half. Pretend it’s like two 180* hemispheres of arc distance but the exit is it halfway through the other side at 270.
you’re starting at zero and 360 so to speak and then heading out from there but the driver is at 30 and 330 so you pressure wave bounces off of a 30 cm initial gap (or 20 or 40 )whatever fits The driver or the pair of drivers )in the same proportion as if it were 12 parts in 360. even if you’re using a different number for your interval just make sure you end up with numbers at total four separate quadrants on a circle.
0/90/180/270/360/
*0-30—-90. (0,1,1,2)
Fold
90-180 (3)
Fold
180-270(3) ———>exit as L45
fold
*360-330-270(0,1,1,2)
It’s all full of fibernacci and golden ratio. 15*on a circle is 2618(2.6190476 in radians,2.618 in cubits 15 degrees in circumference and 24 hours in 3600 on a compass) Every second a pendulum 100 cm long swings in ark of 30° off and 15° Center. So using 30° or 45 or 15 in numbers like 300 or 360 total just work out wonderfully the function of frequency. Look at frequency at 345.6 m/s in a pipe rez calculator. It’s all kinds of frequency/cm information if the drivers at 30 and 330 to 360 total in a dual parallel qw pipe. It’s like it was made to be. It’s the perfect storm perfect recipe I don’t know what to call it. But anything similar to that it’s just an extra swing on the same pendulum idea so everything’s in sync. Or spaced out as such.
It seems to work quite well. And even slight changes into that recipe still retain the same idea so I gave yours a little more length I think you mentioned wanting to be down to the 20s?
it matters. it changes everything especially if you use numbers refer to circles as your cross-sectional areas too.
(You could even sneak in a 306090 A squared equals B squared equals C squared function in between the numbers you use for the first and second half and it stays buttery smooth does not leave any phase discontinuities were the two sides meet in freq. Every fold is a low pass filter and you get the gain from that and superposition of standing wave sized as whatever gets by because it’s (bigger or )longer. Whatever remains contribution to the outgoing if it works out to nearly the same size but not quite big enough to continue on to the next segment… )
if it were a simple ~30 Hz (28.8 hz if no csa change at 180) cabinet it would be straightforward as 306090 120-180–270through 360 and then it’s real easy to see by just using this circle as a pattern and circumference as your playground so to speak.
in the case of 24 hz you need to 360 between the drivers instead of 300. So shuffle your stuff around by bumping up a couple degrees on the circle model but make sure you maintain your spacing between your folding with respect to the overall total so you still remain with four segments just like quarter wave is a big sign wave wrapped all the way around the circle , each of those quadrants is a piece of the main. But each of those also has their own 3/4 worth of a circle shaped as a sine wave. Hence the 30 6090 is a node/anti node Pattern on the hypothetical sine wave shape dropping on those points. Continuing throughout the entire enclosure. In either direction just like it will in reality between the drivers in the bandwidth with and frequencies played. But each time it hits a fold will be an endpoint in the band with already. And acoustical center will be a fold as well. So they’re just straight 180 with Rigid and abrupt nothing else.
The sound bumps back-and-forth on the long side three times and on the short side just the once. And both of them have the initial offset from the very start. If you count how many times that I actually moved then the individual parts before the first falls are themselves at the pressure or acoustical center so to speak of that segment looking at February etcIf you count how many times that I actually moved then the individual parts before the first falls are themselves at the pressure or acoustical center so to speak of that segment looking at It from a pump cycle or pressure wave as the driver and the closed end interact before the driver again Provides the next pulse but they’re spaced out in sequence which doesn’t interfere with the next instead of promote it because that end is equal distance to the actual full downstream from botProvides the next pulse but they’re spaced out in sequence which doesn’t interfere with the next pills instead of promote it because that end is equal distance to the actual full downstream.
(0.,1,1,2).
Of course you could fudge is a little bit. We don’t have a choice it’s not like a 12 inch driver fits in 30 cm if there’s one right next to it. But that’s where horizontally opposed to suddenly very advantageous. But then you gotta be careful that your cross-sectional area will fit two motors and pole vents .
Think of swinging a pendulum and if it’s centered on the driver ay the start don’t ever fall in between a stroke or swing in any other interval distance to the next parallel/end point.
you could jump cross-sectional area and match up to the other half. Pretend it’s like two 180* hemispheres of arc distance but the exit is it halfway through the other side at 270.
you’re starting at zero and 360 so to speak and then heading out from there but the driver is at 30 and 330 so you pressure wave bounces off of a 30 cm initial gap (or 20 or 40 )whatever fits The driver or the pair of drivers )in the same proportion as if it were 12 parts in 360. even if you’re using a different number for your interval just make sure you end up with numbers at total four separate quadrants on a circle.
0/90/180/270/360/
*0-30—-90. (0,1,1,2)
Fold
90-180 (3)
Fold
180-270(3) ———>exit as L45
fold
*360-330-270(0,1,1,2)
It’s all full of fibernacci and golden ratio. 15*on a circle is 2618(2.6190476 in radians,2.618 in cubits 15 degrees in circumference and 24 hours in 3600 on a compass) Every second a pendulum 100 cm long swings in ark of 30° off and 15° Center. So using 30° or 45 or 15 in numbers like 300 or 360 total just work out wonderfully the function of frequency. Look at frequency at 345.6 m/s in a pipe rez calculator. It’s all kinds of frequency/cm information if the drivers at 30 and 330 to 360 total in a dual parallel qw pipe. It’s like it was made to be. It’s the perfect storm perfect recipe I don’t know what to call it. But anything similar to that it’s just an extra swing on the same pendulum idea so everything’s in sync. Or spaced out as such.
It seems to work quite well. And even slight changes into that recipe still retain the same idea so I gave yours a little more length I think you mentioned wanting to be down to the 20s?
it matters. it changes everything especially if you use numbers refer to circles as your cross-sectional areas too.
(You could even sneak in a 306090 A squared equals B squared equals C squared function in between the numbers you use for the first and second half and it stays buttery smooth does not leave any phase discontinuities were the two sides meet in freq. Every fold is a low pass filter and you get the gain from that and superposition of standing wave sized as whatever gets by because it’s (bigger or )longer. Whatever remains contribution to the outgoing if it works out to nearly the same size but not quite big enough to continue on to the next segment… )
if it were a simple ~30 Hz (28.8 hz if no csa change at 180) cabinet it would be straightforward as 306090 120-180–270through 360 and then it’s real easy to see by just using this circle as a pattern and circumference as your playground so to speak.
in the case of 24 hz you need to 360 between the drivers instead of 300. So shuffle your stuff around by bumping up a couple degrees on the circle model but make sure you maintain your spacing between your folding with respect to the overall total so you still remain with four segments just like quarter wave is a big sign wave wrapped all the way around the circle , each of those quadrants is a piece of the main. But each of those also has their own 3/4 worth of a circle shaped as a sine wave. Hence the 30 6090 is a node/anti node Pattern on the hypothetical sine wave shape dropping on those points. Continuing throughout the entire enclosure. In either direction just like it will in reality between the drivers in the bandwidth with and frequencies played. But each time it hits a fold will be an endpoint in the band with already. And acoustical center will be a fold as well. So they’re just straight 180 with Rigid and abrupt nothing else.
The sound bumps back-and-forth on the long side three times and on the short side just the once. And both of them have the initial offset from the very start. If you count how many times that I actually moved then the individual parts before the first falls are themselves at the pressure or acoustical center so to speak of that segment looking at February etcIf you count how many times that I actually moved then the individual parts before the first falls are themselves at the pressure or acoustical center so to speak of that segment looking at It from a pump cycle or pressure wave as the driver and the closed end interact before the driver again Provides the next pulse but they’re spaced out in sequence which doesn’t interfere with the next instead of promote it because that end is equal distance to the actual full downstream from botProvides the next pulse but they’re spaced out in sequence which doesn’t interfere with the next pills instead of promote it because that end is equal distance to the actual full downstream.
(0.,1,1,2).
Of course you could fudge is a little bit. We don’t have a choice it’s not like a 12 inch driver fits in 30 cm if there’s one right next to it. But that’s where horizontally opposed to suddenly very advantageous. But then you gotta be careful that your cross-sectional area will fit two motors and pole vents .
Attachments
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simple circles circumference as a guide. But also 30° for 15… It matters it has to. What’s the function of the number three ( the speed of light) in everything. Especially sound.
The basis for that would be the swing of the pendulum 100 cm long raise it up 15° and release it it will swing all the way across in one second that will be 30° or pi divided by six or 05238 raThe basis for that would be the swing of the pendulum 100 cm long raise it up 15° and release it it will swing all the way across in one second that will be 30° or pi divided by six or 05238095238 radians.
Then if you take a sphere with a radius of 0.5 just like the straight line distance across that arc in the pendulum, And place it into a cube with L what length onAnd place it into a cube with As 1 m then you will displace water in it with the sphere and that will be five to .38% by volume.
If you if you take that same cube and you make it two side-by-side you just created a bunch of measurements that pythagorean theorem triangles throughout.
those numbers at the end points will be the perimeter of the rectangle as pie. And therefore the short ends will be 05238095238 and the logins will be 10476190476
diagonals on the ends are 07874(?)
that’s the same number you’ll see in 1/254. They both 45° but they’re also both representative of 20 Cm or certain amount of inches converted into centimeters or vice versa?
The Long point along point hypotenuse of the rectangle is 1.309523 875The Long point along point hypotenuse of the rectangle is 1.3095238 and the base on the flooring the floor dimension will be representative of 2.236 which is also in the centimeter conversion numbers 003/254
Steve things are going to point out over and over again angles degrees in centimeters in inches but also a sequence of numbers that you see in those numbers will be as followSteve things are going to point out over and over again angles degrees in centimeters in inches but also a sequence of the numbers that you see in those numbers will be The fourbuer transfer in how spacing of frequencies canceled out in the perfect parallel quarter with a quarter way pipe will represent that same exact thing starting at 864 hz.
that’s 860 -4 for every single frequency until 24 times that Or the end of human hearing essentially in a sequence of 19780hz you can see this in response and if you have perfectly aligned do a quarterly price you will cancel out every single signal at 860 intervals and everything in between as well But secondary to that will be a ripple spaced out by a sequence of numbers as well Peak and Valley precisely on a 48,96,192,384 pattern or Numbers they ride alongside that same pattern over and over again all the way out.
All the same exact thing you can do and it will start at 430 Hz instead by taking the entire cabinet and reducing every single dimension proportionally so that instead of three and 30 300 360 it’s based on 15 150
180
Or even 10 100 120? Whatever you’re doing it’s got nothing to do with anything except for five and over six hours and 6/5. Thator 432/360 and 360/432 function of the radius of the sun or the second in 12 hours or whatever you wanna call it ? Doesn’t matter whatever it is it works and it works every single time. 0.83333-1.2. That is the gap in time of every single moment a human is observing their environment that the optic nerve will take up information and shut down while the brain processes it before relatinThat is the gap in time of every single moment a human is observing their environment that the optic nerve will take up information and shut down while the brain processes it before relighting coil to collect more visual stimulus over and over every moment every second every day you’re awake you’re unconscious for that exact amount of time processing it.
It’s very strange how these things are all perfectly connected but hopefully you see what I mean or it makes sense enough that you could stick it in a speaker enclosure to get this out of it no matter whaIt’s very strange how these things are all perfectly connected but hopefully you see what I mean or it makes sense enough that you could stick it in a speaker enclosure to get this out of it To see what I mean even if it’s just a good speaker design that works out for your needs then you can look at it later and see exactly what those numbers really represent if that is something Curiousity wants to see..
it’s all connected it’s all in math but it’s also in the location of every single thing that you can represent in the same format in the solar system or in the Pythagorean theorem slept on to it from the sun outward back to back 30 6090 triangles spell out the same intervals as you’ll see in harmonics and octaves or those parts of the cabinet that do the same thing. It’s kind of tricky it’s really kind of weird but somewhere in there we just need to use radians of a circle to describe circumference and the rest of that stuff about the cube and the sphere in the triangles across the room and Egyptian pyramid It’s kind of tricky it’s really kind of weird but somewhere in there we just need to use radians of a circle to describe circumference and the rest of that stuff about the cube and the sphere and the triangles across the room in Egyptian pyramidWhere is carved out a solid granite and has all these numbers in it already and miniature form as well because there’s a rectangle sitting in the room and it screams microcosm macrocosm?
maybe that’s the three and the 30 and the 300 in the math here because it most certainly works perfect when I apply it over and over to all kinds of different things in qwwave. ?
Even the series tuned version of these pipes will drop on this method and have the same type of results for those drivers as you get in the parallel pioes with a converging endpoint at exit.
I see a slight advantage in the parallel version because of Cone control . And also the edges of the bandwidth are a little bit wider the rolloff is a little bit more forgiving In the parallel maybe due to the drastic CSA change and the math trapped in some of that. But at the same time if I’m in wide-open space 2.0 XPi, it seems that you can get a fatter knee with the roar sometimes but the shape start getting dangerously close to possible issues with a another dimension in the box and the standing wave or whatever going on in that may or may not be a good thing it’s hard to say but keeping the basket diameter or two in the vertical cents and using four drivers or two in pairs shows a variety of things as well of what actually happens in size or distance from closed ends and there’s a sweet spot at all this and it’s an absolutely strange coincidence? The 12 and 18 inch drivers often share that size and depth situation that they sometimes fit in and then the 15 and 21 kinda have a relationship equally as difficult or similar depending on where you put them..The 12 and 18 inch drivers often share that size and depth situation that they sometimes fit in and then the 15 and 21 kinda have a relationship equally as difficult or similar depending on where you put them.
But you can’t have huge drivers in a row without getting way out away from the closed-end in quarter wave pipes were that just shows up overstocked and starts to make a bias in your response. I ordered ones do this and show a limit to what you probably want to do wear nothing should be in Series if it can be in parallel from s closed and instead?
If you don’t space out to drivers perfectly side-by-side and closed and or the first fold in this you screw it all up it seems? So if you can get these things all to sit in their own circuit board share them in perfectly space pairs then you’re not interrupting potential numbers that work out in the end.
No matter what you’re 30 plus cm from the closed-end if using two 12” drivers .
Sometimes that’s a good thing but sometimes it doesn’t fit either in the depths of the basket and what the SIM demands for CSA what are you doing this in a way that doesn’t come with our definitive answers. Faze discontinuity up at 86.4 Hertz or so that shows up when you do dual pipes and you screw it up.
Then if you take a sphere with a radius of 0.5 just like the straight line distance across that arc in the pendulum, And place it into a cube with L what length onAnd place it into a cube with As 1 m then you will displace water in it with the sphere and that will be five to .38% by volume.
If you if you take that same cube and you make it two side-by-side you just created a bunch of measurements that pythagorean theorem triangles throughout.
those numbers at the end points will be the perimeter of the rectangle as pie. And therefore the short ends will be 05238095238 and the logins will be 10476190476
diagonals on the ends are 07874(?)
that’s the same number you’ll see in 1/254. They both 45° but they’re also both representative of 20 Cm or certain amount of inches converted into centimeters or vice versa?
The Long point along point hypotenuse of the rectangle is 1.309523 875The Long point along point hypotenuse of the rectangle is 1.3095238 and the base on the flooring the floor dimension will be representative of 2.236 which is also in the centimeter conversion numbers 003/254
Steve things are going to point out over and over again angles degrees in centimeters in inches but also a sequence of numbers that you see in those numbers will be as followSteve things are going to point out over and over again angles degrees in centimeters in inches but also a sequence of the numbers that you see in those numbers will be The fourbuer transfer in how spacing of frequencies canceled out in the perfect parallel quarter with a quarter way pipe will represent that same exact thing starting at 864 hz.
that’s 860 -4 for every single frequency until 24 times that Or the end of human hearing essentially in a sequence of 19780hz you can see this in response and if you have perfectly aligned do a quarterly price you will cancel out every single signal at 860 intervals and everything in between as well But secondary to that will be a ripple spaced out by a sequence of numbers as well Peak and Valley precisely on a 48,96,192,384 pattern or Numbers they ride alongside that same pattern over and over again all the way out.
All the same exact thing you can do and it will start at 430 Hz instead by taking the entire cabinet and reducing every single dimension proportionally so that instead of three and 30 300 360 it’s based on 15 150
180
Or even 10 100 120? Whatever you’re doing it’s got nothing to do with anything except for five and over six hours and 6/5. Thator 432/360 and 360/432 function of the radius of the sun or the second in 12 hours or whatever you wanna call it ? Doesn’t matter whatever it is it works and it works every single time. 0.83333-1.2. That is the gap in time of every single moment a human is observing their environment that the optic nerve will take up information and shut down while the brain processes it before relatinThat is the gap in time of every single moment a human is observing their environment that the optic nerve will take up information and shut down while the brain processes it before relighting coil to collect more visual stimulus over and over every moment every second every day you’re awake you’re unconscious for that exact amount of time processing it.
It’s very strange how these things are all perfectly connected but hopefully you see what I mean or it makes sense enough that you could stick it in a speaker enclosure to get this out of it no matter whaIt’s very strange how these things are all perfectly connected but hopefully you see what I mean or it makes sense enough that you could stick it in a speaker enclosure to get this out of it To see what I mean even if it’s just a good speaker design that works out for your needs then you can look at it later and see exactly what those numbers really represent if that is something Curiousity wants to see..
it’s all connected it’s all in math but it’s also in the location of every single thing that you can represent in the same format in the solar system or in the Pythagorean theorem slept on to it from the sun outward back to back 30 6090 triangles spell out the same intervals as you’ll see in harmonics and octaves or those parts of the cabinet that do the same thing. It’s kind of tricky it’s really kind of weird but somewhere in there we just need to use radians of a circle to describe circumference and the rest of that stuff about the cube and the sphere in the triangles across the room and Egyptian pyramid It’s kind of tricky it’s really kind of weird but somewhere in there we just need to use radians of a circle to describe circumference and the rest of that stuff about the cube and the sphere and the triangles across the room in Egyptian pyramidWhere is carved out a solid granite and has all these numbers in it already and miniature form as well because there’s a rectangle sitting in the room and it screams microcosm macrocosm?
maybe that’s the three and the 30 and the 300 in the math here because it most certainly works perfect when I apply it over and over to all kinds of different things in qwwave. ?
Even the series tuned version of these pipes will drop on this method and have the same type of results for those drivers as you get in the parallel pioes with a converging endpoint at exit.
I see a slight advantage in the parallel version because of Cone control . And also the edges of the bandwidth are a little bit wider the rolloff is a little bit more forgiving In the parallel maybe due to the drastic CSA change and the math trapped in some of that. But at the same time if I’m in wide-open space 2.0 XPi, it seems that you can get a fatter knee with the roar sometimes but the shape start getting dangerously close to possible issues with a another dimension in the box and the standing wave or whatever going on in that may or may not be a good thing it’s hard to say but keeping the basket diameter or two in the vertical cents and using four drivers or two in pairs shows a variety of things as well of what actually happens in size or distance from closed ends and there’s a sweet spot at all this and it’s an absolutely strange coincidence? The 12 and 18 inch drivers often share that size and depth situation that they sometimes fit in and then the 15 and 21 kinda have a relationship equally as difficult or similar depending on where you put them..The 12 and 18 inch drivers often share that size and depth situation that they sometimes fit in and then the 15 and 21 kinda have a relationship equally as difficult or similar depending on where you put them.
But you can’t have huge drivers in a row without getting way out away from the closed-end in quarter wave pipes were that just shows up overstocked and starts to make a bias in your response. I ordered ones do this and show a limit to what you probably want to do wear nothing should be in Series if it can be in parallel from s closed and instead?
If you don’t space out to drivers perfectly side-by-side and closed and or the first fold in this you screw it all up it seems? So if you can get these things all to sit in their own circuit board share them in perfectly space pairs then you’re not interrupting potential numbers that work out in the end.
No matter what you’re 30 plus cm from the closed-end if using two 12” drivers .
Sometimes that’s a good thing but sometimes it doesn’t fit either in the depths of the basket and what the SIM demands for CSA what are you doing this in a way that doesn’t come with our definitive answers. Faze discontinuity up at 86.4 Hertz or so that shows up when you do dual pipes and you screw it up.
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I’m not typing all the stuff hopefully the microphone doesn’t screw it up.. Siri has a brain Of her own sometimes 😂😂👽 (iPhone dictation)
This is the telltale sign in all of this that something is Working out for you there is no other number more important. as a reference point to a bigger picture one which cannot be ignored once you realize what that is. If its in design results it is going to work if you’re really looking for a mathematical version of perfection in a cabinet ? there it is. Higher order results have a higher frequency reference material Convergence of whatever you create inside
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Thank you for your reply with even recommending something more pratcical! I must say though I can reach that much efficiency even with a BP of that size. I realize that i will lack kick-frequency if I dont go for TH. But I wouldnt say that your recommended model will be much more capable within my desired frequency range. Going for 400 liters sure makes it way more practical, but i will need a second enclosure just to reach that SPL. Instead I rather max out this one enclosure I got, since i dont plan to expand my budget. I got the room to work for it, i just dont want to exceed 700 liters, since it just will get too big.
Afaik getting a second sub gives me +3 dB. Going for double the size of the enclosure gives me the same gain. So why going small and twice the price of expensive electronics, if you can just double up the enclosure size 🙂.
I really appreciate your thoughts though, dont get me wrong. I just dont want to build an enclosure with lower efficiency than 116dB corner loaded with my settings for reference. I would appreciate your effort even more, if you could get me simple model that does those >116dB with a smaller enclosure 😀.
As for now i get theoretically up to 117-118 with my updated plan of a 6th order series.
I need to add, that i gave up going below 30 that much. Getting maybe down to 27ish is just fine. My aim is to get the most between 30 and 40hz. Ill get a DSP that allows me to set the cutoff wherever i want, so i dont have to worry too much about excursion limits and stuff.. Guess forcing the speaker below its fs is fine if i dont force it too hard and not too far from its fs.
Corner loading theory requires infinite walls and an exit in the corner, neither will happen in a small room.
Here's a TH half the size of yours , two of them go a little louder ;^)
Really, thinking about a couple dB when the room will cause +/-12dB (or more..) response variations, and won't be at all like a predicted 1/8 space response is a time wasting effort.
Roll your sub in and out of your corner, measure the response difference at the listening position, then get back to us :^)
Art
I get Endless amounts of successful versions of things that are the equivalent of a series tuned I will record my pipe using things that look exactly like the Keystone and since the Keystone has a bit of a flare rate and the aperture design I think that it’s smearing things that I don’t get to see obviously in horn response however there seems to be another way that comes up with something very similar and it doesn’t use a flare or an aperture (yet. ) But it may not need to do so because instead ofUsing that approach to acquire the response that it does if you actually use 360 cm and divide it up precisely as 0, 120, 240,360 and the driver entry is at 30 cm from the far endAnd again at 2:70 effectively which requires a three dimensional fold so that there is no extra as you wrap around from the backside fold into the larger chamber you can see what is much more easily visible by intentionally screwing it up so exaggerates the lumpy response how do you put in or remove that off the driver location in both sections simultaneously and observe how it perfectly bifurcates an existing peek.
The same thing is even more apparent in the very stubborn and very picky version of this which is exactly the same except you split part of that large chamber and devoted it to a parallel pipe off of that side of the driver where you can do the same exact thing and see how you absolutely positively have to space that out like that because that will expose any discontinuity whatsoever immediately just like the common transmission line speaker does when moving the driver down to the first pressure note for that harmonic interval which is part of the three-quarter harmonic if you don’t get thatDead nuts on the money you continue to have remnants of it and that area is it necessarily anything that concerns anyone but when it is in the parallel pipe it’s sDead nuts on the money you continue to have remnants of it and that area is it necessarily anything that concerns anyone but when it is in the parallel pipe usually where people are clogging the thing and really getting a lot of sound out of it so any boundary condition or any combination of beats or bead frequencies or something that run around that area periodically will result in anything I imagine but specifically when I go in after it searching for it in the cabinet that didn’t necessarily expose it horribly in a SIM but it became so violent that it would be fair to say the cabinet might get slightly airborne in the vibration or reverb sort of result if not the cone was on the verge of folding up like a taco and thankfully the noise is so horrible and actually painful what do you variety of frequency contact it seems to be in it that a person immediately turns it down or off and wonders what the hell just happened.
I don’t know that that necessarily is so sensitive or shows up as much in the acid driver transmission line version and everyone of those I’ve ever done I was typically stuffing because it was so much landscape to make that so easy without eating up help but those designs aren’t necessarily anything but a full range speaker where a completely different approach is needed and so even if that face discontinuity is as much of an issue as it in the parallel pipe it may not ever really expose yourself in the crazy violent manner it would in the other.
my thing is it’s only off by a little bit and the numbers are hard to track because you could be too short in the long side or too long and the short side or vice versa but what really is the problem it seems was that advanced Scirlein does not at all allow you to dial that in or consider what exactly is gonna happen but one thing that absolutely does because it has no choice it’s just simply repeating the same length as three on one side folded and one on the short side as a single but every single one of those gets a bulkheadOn each end so nothing is ambiguous and unfortunately that’s the very end you’re gonna have to make a goofy little turn or something and give it 30 cm of combined cross-sectional area which not only insures that you’ve allowed things to come together from both sides and their source but also they had to make that one last low pass filter type event where every single thing in the cabinet has been exposed to that along the way.
when I look at that in the math and it’s represented as radians in a circle you can see how one part of the cabinet is directly related to another one because those numbers have face sequence numbers on them in by nature.
Was the 22÷7 version of pi that is used in antennas and radar and the space program I think. It’s not technically correct but it is related to that as you recall a long time ago NASA almost had an incident because of a conversion between inch and a centimeter that someone missed that’s not exactly what happened it seems the issue is stuck in the math that you can see in 1÷254 which is pi divided by eight or eight divided by piBoth of which you can invert and see the conundrum how that would be represented in Hailer math and carry a potential disaster if calculations are using more and more decimal points in detail with Chino certainly arBoth of which you can invert and see the conundrum how that would be represented in Hailer math and carry a potential disaster if calculations are using more and more decimal points in detail.
but as soon as you look at that you realize that the inch conversion to the centimeter has a sequence of numbers in it already and they’re lying in the points 3937 has 12 and .7874 as 24 and the .15748 as 48 and in the 31496 has 96 and the 62992 as 192 if you keep going you see what I mean those numbers will keep going but they will represent them selves in the same way that you can’t yet even see the 12However you do have you keep going and then you realize that the numbers were talking about how describing degrees in a circle but they’re also describing the radius of a circle and then they have thHowever you do if you keep going and then you realized that the numbers were talking about how describing degrees in a circle but they’re also describing the radius of a circle and then they Bribing a circle in another way which is the radiance or 11÷12 version which is the 15748 number and the 31496 is not only piBribing a circle in another way which is the radiance or 11÷12 version which is the 15748 number and the 31496 is not only pi. But it is 1496 the distance from the earth to the sun and the 6292 is the entire orbit of the earth around the sun and also the speed of light however. It’s that number is 15 and 30 that are both 02618 and 5236 in radians or cubits. And if yoi The parallel Cordaway pipe with the converging exit using 05236 from both ends as a driver entry and folded every single segment directly on 90 you have an alignment that cannot possibly have more output and more material removed from out of band and into the bandwidth and also provides indication of where all of that is coming from. I don’t think that anything will create a sequence that can exceed the output of a box designed around 360 that aligns to all the coincidental details of the size of the sun and the second of the day and since that sounds so ludicrous and retarded I say we challenge you and I say you can’t challenge anything unless you go straight to the top where there’s something worth looking at in order to see what there is to see?
I don’t think that anything will create a sequence that can exceed the output of a box designed around 360 that aligns to all the coincidental details of the size of the sun and the second of the day and since that sounds so ludicrous and retarded I say we challenge you and I say you can’t challenge anything unless you go straight to the top where there’s something worth looking at in order to see what there is to see?
And with all due respect you’re the man because Paraflex is a mess and it doesn’t represent in the way it seemed or laid out and folded it has issues.
and the series 2 versions like roar can be put into this context of 12 in 360 Cm parts separating it because of that 30 cm offset but it doesn’t quite have the common control and thus the ability to push up towards X max at the same time the band width is slightly wider on the edges and has just a little bit different shape when you’re trying to give it apples for apples and volume and distribution and make things essentially just the same as the parallel just a redistribution by that chamber that splits into a separate component.
I hope that makes sense😝 so hard to type these things you’re trying to describe so many functions and features I clearly need like a illustration or a short video companied with narrative…
yeah.. well.. you can design a peaky response ofc and get even with 300 liters 119dB efficiency.. but compare it again to what i try to achieve... a flat but rising response towards low 30s. I'd say a decline of 4db maybe every 10hz until the 50s would be ok. But if i would apply yours without any modification i would haveo DSP a lot above the 60s.. Comparing it to my already built TL with a similar rise towards 25hz i can tell I dont want that kinda peaky response... it lacks consistency in tracks, especially if i shift my resonance towards 29hz. In your case with 34hz i would get sudden smashing loud otes on some DnB tracks and some higher notes in the baseline just lack the pressure...
Thats what i expect regarding the response curve.. I figured out TH are a better choice for efficiency, but still they lack a bit of consitency to my liking. You either sacrifice bandwith for simplicity and get a bass cannon that only play up to 90 hz, or you just craft something way too complicated for my liking.
I strated yesterday featuring out the PH model in hornresp. I guess the paraflex horn is more or less similar to a TH with the difference that you can build them with cooler and more intersting geometry. I got to say though that i struggle to find any explanation of what the parameters should describe after the actual 1/4wave hornsegment...
I doubt that you can get much more efficiency out of PHs if you get a decent TH. In any case i struggle with both 😀.
Ah and one more thing. Please consider using Eg =2,83 and Rg =0,30. Afaik you need to consider Rg of that dimension to simulate realistic conditions. Rg is supposed to be the amplifier output resistance. 0,3 is said to be equivalent to 10meters of cable. having 0 ohms as output resistance is not realistic at all.
Comparing some TH models i try out with my BP 6th order project i find out that i get some nasty group delay at kick regions. Afaik peaky groupdelay tells me i get resonating responses. Ofc resonating responses below 40hz dont matter much but i dont want boomy kicks.
Did i get that assumption right that high and peaky group dealy leads to resonating frequency responses? Or is just the frequency response itself an indication for resonating sounds? I mean you could theoretically have a delayed response but cancel out waves and get no real resonance. Idk how that applies to subwoofer enclosures.
I rather want my kicks to sound nice but not that powerful.
Did i get that assumption right that high and peaky group dealy leads to resonating frequency responses? Or is just the frequency response itself an indication for resonating sounds? I mean you could theoretically have a delayed response but cancel out waves and get no real resonance. Idk how that applies to subwoofer enclosures.
I rather want my kicks to sound nice but not that powerful.
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OK, but some of us don't have time to refresh/read from the beginning plus these threads have a way of 'evolving' to something radically different, so only going to respond to a specific question, ergo you'll only get as accurate an answer as it requires (at least from me).
OK, for a 'one note' 20-40 Hz octave BP alignment; ideally want a -f12 = ~0.707*20 = 14.14 Hz, 40/0.707 = 56.58 Hz tuned to (20*40)^0.5 = ~28.28 Hz, which your BP6S meets once DSP'd, though being intrinsically under-damped (response 'sags'), ideally need to rethink it to flat or over-damped.
OK guys i guess i can go now with my 26 years in bass building pension ;D. I think i finally got the best of both worlds buy building a very simple TH design. I just started with my BP design translating it into the TH model and then fidgeting a bit with it. Look at this one now:
1. It is simple to build. Very similar to my recent model. Maybe i can split the tube simmetrically and center its opening. Some coolnes boost and maybe better radiation properties too.
2. It has no nasty delays below 100hz. Above it is just DSPable... i hope.
3. It can easily go down to 26-27 hz, with a little bit more volume at the opening.
It rather reminds me of a t-line now more than a normal horn. I call this one the tapped line xD
1. It is simple to build. Very similar to my recent model. Maybe i can split the tube simmetrically and center its opening. Some coolnes boost and maybe better radiation properties too.
2. It has no nasty delays below 100hz. Above it is just DSPable... i hope.
3. It can easily go down to 26-27 hz, with a little bit more volume at the opening.
It rather reminds me of a t-line now more than a normal horn. I call this one the tapped line xD
If you remove the tape or section just prior to the second driver entry you get a really simple and consistent layout. One that works quite well in a similar to a roar or Keystone without the aperture.
I don’t know how you do that turn or that opening there but it can be incorporated into three folds one of which lands right there upstream of the driver.
Thats the project now. I struggled to replicate the steady diameter changes and approached them by warying constant and linear diameter over the canal-length. The cad model got the hornlength right but the volume at the widening segment is a bit off, mine is a bit narrower, but it gets very sooner wider than the hornresp model. All in all i think i will get something like that, maybe a bit flater and lower than the simulated model due to the bigger but still narrower model at the widening section of the horn. The cad model looks like this now.
I got xmax ratings of 12,9 mm onedirectional. i got around 3,3 mm space until i would hit the wall with my cone. Afaik my subs move quite a bit in the t-line i already have. I wonder if 3,3mm space is safe enough for the cone.