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Old 5th April 2021, 09:27 AM   #201
Booger weldz is offline Booger weldz  United States
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Quote:
Originally Posted by GM View Post
Please elaborate because all pipes/cones have a 1/4 WL fundamental regardless of type: Resonances of open air columns
I use this at least twice a week or more. Draw it on any folded pipe.. and then it shows what would work if adding more(pipes and their closed end as phase dictated-already if looking at a paraflex (or ODTL even).. the same visual aid can be seen in a sim in real time. It squiggly lines not smooth ones. People leave them squiggly and they get bitten. Its precurser to bad bad sounds. I even stick a blower (shop vac) in these things to driver air and listen. Hints of helmholtz or whistling edges or anything thats nicky digested in bracing with lots of holes to stir up a smooth not turbulent pattern? Seems so as the solid bracing will sometimes sing a song if at abd angle. Like a sunroof open but no windows in th car. Suddenly that even hurts everyone's ears. Well its not quite the same but yet theres similar issues in the chamber thats open to a high velocity area??

Last edited by Booger weldz; 5th April 2021 at 09:33 AM.
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Old 5th April 2021, 10:05 PM   #202
Din1990 is offline Din1990
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Originally Posted by GM View Post
I'm on the slippery slope to 75 with principally bringing prosound audio performance into the home being a ~lifelong DIY hobby.
Wow! So, you're two generations older, respect for what you've done on the field so far, longevity!!!
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Old 5th April 2021, 10:12 PM   #203
GM is offline GM  United States
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Old 5th April 2021, 10:29 PM   #204
Din1990 is offline Din1990
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Old 5th April 2021, 11:12 PM   #205
Din1990 is offline Din1990
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Quote:
Originally Posted by Booger weldz View Post
WHAt did i say about qw
Here...
Quote:
Originally Posted by Booger weldz View Post
each with a purpose and an exact reason the qw is no longer just a quarter of the full wave.
I've only heard QW for Quarter Wavelength, that's all I know...

Quote:
Originally Posted by Booger weldz View Post
Or how can i elaborate? Draw? Type?? Eek... i think theres already an issue with typing. And i hate how hard it is.. theres a facebook group where you can spitball for days and dont have to worry, were all rookies there. Meanwhile im tryimg to come up with a series of drawing and stuff from the books of harry olson and others to help say what i cant ‘type’ or describe inless a video ? Lol?


Im not trying to sound retarded. Lol!! It comes naturally, .

But Seriously I do think ill have somethng to share/show at some point. Harry olsons got endless material to use for examples. Jut gotta but it together in a ay that overlaps a lot more.
Ah no no no no, I'm not implying you're retarded at all (how do I know???), if you remember the other (1st) thread where we met, I told you I'm not that knowledgeable to understand any of your explanations, still having the same problem, it's the same as if I'm gonna explain you about something like, say "sorting algorithms" from my subject, you'd never understand, I'd call it a CONFLICT OF SUBJECTS, I'm not in your SUBJECT & you aren't in mine...

I just just just wanna make a "subwoofer", to make it clear, whatever brings me a loud-enough 20hz, I welcome it...

Last edited by Din1990; 5th April 2021 at 11:19 PM.
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Old 6th April 2021, 12:23 AM   #206
GM is offline GM  United States
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OK; so you're saying that mine and BP1's aren't loud enough?
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Old 6th April 2021, 11:01 AM   #207
BP1Fanatic is offline BP1Fanatic  United States
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If that's the case, then build more enclosures. 1 on each wall should work!
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Old 6th April 2021, 01:18 PM   #208
Booger weldz is offline Booger weldz  United States
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No! Guys, sorry, i know you wouldnt call me a retard , it is however a result of typing and not anyones fault

Here:

GMs approach to the bose wave cannon with DJM(rip) is also a shape you can create in a paraflex type C. While that might not seem like anything or if doesnt (?) it might not be.. but it is if it is and the same idea is in an od qw pipe from another location(upstream).

But start adding more driver so they spread as 3 would in the space of 3 in the width of 120cm. Then use That if you want to or dont. It only represents things if you want it to. Only 10 or 12” drivers fit. I use two or an 18 allone(it doesnt matter, its flooding the area of offset in one side. If an imaginery middle.


Thats all only going to make sense if you build it. Wjateveryou do look ata PH sim as if its 240 and 80 cm. Then offset in that in ways you can and will if youhave to use only 20/40 or 60 cm from a closed end. The driver might even force it actually... 20 as 12 is 36? And 40 and its 2 12s....side by side and 60 as its then 3 centered at 60...

Thats pressure phase and itll show you 160/80, 80 or 120/120.....80 itll even show you 120/120/100 and 20. (Plus offset as you must now use it on both sides) If not. Youre csa in pipe chunks is wrong. Or, your offset driver position sucks. The driver ts parameters suck. Youre idea sucks. But one of those sucks, not physics..

. its there anytime you wanna see it. But if you dont make it possible you wont even be able to sim it. It never sucks when phase is represented from both sides.

PH mode is a clear perfect visual to what wasnt before it existed. All that remains is Q losses and friction to heat. The perfect path is now known


Its not an algorythm its reality. Ignore it or flare it? Its only phase if you look at it straight in the face as a pipe through a pipe.

14.5hz all day in a sim. But its not just that. Itll be lower... pressure phase and distance thru a folded pipe are not the same. One has actually hit a wall to exist. The other is a bunch of ideas snd advanced centerline didnt help pressure phase? It cant... so why try?

Fb is more important? Sure. But this is not qw. This is pipe physics. Qw is what were using i suppose, but its gotta be shoved through a pipe and its folded. Period. Nothing can change that except of you ignore it. We have been, and i think we forgot?


I dont know much. But i dont have to. I really on other peoples ideas. Theres something in a pipe. Its pretty much obvious if its 3 pipes. And offset driver entry is weird??? Look at it. What is there? Look at it as 3 pipes. But theres a 4th its whatever is at the exit of those that meet in sound not length. So make known. ‘Path’ is not knowing...’TH’ and ‘PH’ have no ‘path’. Thats important. It really is

Last edited by Booger weldz; 6th April 2021 at 01:40 PM.
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Old 6th April 2021, 11:58 PM   #209
Booger weldz is offline Booger weldz  United States
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This: while abbreviated in many ways it still represents something at the harmonic of something the long one as a qw to the shared full wave they both define or represent parts of...

The green only depicts the length so its obvious what it is or that it needs to be in order to be ‘perfect’ . Its all very easy to confuse in a corner. Lets try not to comfuse anything, lets assume we are all wise and our collective wisdom will figure out some thing we all might find very intersting and mutually fun?

‘Perfect’ is the question? What is ‘perfect’ and we are going to assume the csa anywhere (as pipe segments shown ) at a turn or end and overall lengths are fair to Fs and Vas. As well as not put out of wack with any Qes/Qms(Qts) that might skew our Fb /Fs too extremes not inherint of the design (type C paraflex with 1, 2 or even 3 12” drivers and s2 as needed (on or two or three radius, 20,40,60cm assume) that then defines 40 cm everywhere(skip corners or skip trying to, i dont think i can feed any thing but optomism here. And the entire idea of a dual pipe attached at the end needs to help in doubt. I won't even waste a moment there. Ill keep building them and pretend i dont know anything? Its kinda hsrd after aWhile. The answer is ‘nobody cares how it works’, that voodoo is lucrative. And DIY is free love.

What do see? What do you think? What makes sense?
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Old 7th April 2021, 12:05 AM   #210
Booger weldz is offline Booger weldz  United States
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This shows how i have drawn it in a way that jumps ahead of itself by the same margin so its not confusing anything as a big single quarter of a wave shape (sine)on the main long path and its turns, yet needs to be flat and thrn just one swoosh of 4 it represents....
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