Going through the whole thread, this kept being the most relevant post. It explains very clearly why some people prefer crappy subs, they notice it more so they like it.
Until they experience a great subwoofer at high spl....
Yes Patrick is right. In my driver testing I spend some time switching the main speaker off and on while the sub keeps playing. Often times the sub is adding distortion that you can notice with the mains off and then just slightly hear it with everything playing.
Have you played around with anything in the ‘PH ‘ sections? both ‘Roar’ and ‘paraflex ‘ drop right in and have a ‘sweet spot’ where they are nearly twins in size and response . Paraflex takes the nod with just a bit more cone control at the edge of excursions limits , but ROAR sure is a convenient package and a simple layout. Two drivers or 4 to cancel even order junk and it gets really good if you split 360 into 12 parts, abd L45 at the end, (30cm each as L12,L67,L78, L89, L45 and 150cm in L23, 90 L34, split the CSA at the L23/L34 as a stepped pipe and it’s a winner, at a 30-32hz tune. The volume and sections are divided into even parts with 180,90,90 and L45 (30) lengths but same volume me with the larger cross section .
I really want a pair of these rssHE shrub tested here👍🏻
Man, it's been months since I played with HR period. I work too much. I wish HR had an app. I only turn on my personal laptop in the kitchen to watch NFL or NASCAR if I'm cooking. I can't remember the last time I updated my desktop in the office upstairs. I'm either on my cellphone in the mancave or work laptop in the basement or at work.
I only played around with the PH functions briefly when David 1st implemented it.
Also, I haven't been able to update HR on my work laptop for the past year or 2. We recently moved all of our personal stuff to the Cloud at work. I haven't tried yet, but I'm hoping HR will run from the Cloud. I always kept HR on our H: drive so whenever I got a new work laptop, I could run the program from there.
I only played around with the PH functions briefly when David 1st implemented it.
Also, I haven't been able to update HR on my work laptop for the past year or 2. We recently moved all of our personal stuff to the Cloud at work. I haven't tried yet, but I'm hoping HR will run from the Cloud. I always kept HR on our H: drive so whenever I got a new work laptop, I could run the program from there.
Thanks! Did you ever consider low level detail or micro dynamics as one of your evaluation criteria?
Like some speakers or woofers just sound dull at low levels until you crank up the volume, then they sound great?
Any ones that stand out as particularly good or poor at low levels?
Cheers!
So, at this point how would you rate the woofers tested against the IBs? Are the IBs manifold loaded?
I do too, but it is version 50.70. They now make you fill out form to update the software.
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You Guys got a hurry up and dump the speed of light (it’s parallax angle used to determine the distance too far away celestial bodies in astronomy is 05238 . But otherwise the speed of light is 29.9792458° which in 360 can be 30. As in to 270 and 90 on both sides of the exit , but also with a 30 cm from each closed end distance and to finish it all off 30 cm as L4 five. With the right CSA and if you choose to expand at 180° through 360 meaning all of the short side and the last third of the long side , you don’t find a pattern which also needs a CSA increase for the L4 five which comes naturally if you divide all those sections up and look at what they are in the schematic for a volume and how that’s split up into affectively quadrants of a sphere and you’re not ugly spherical trigonometry mathematics that can suckThe life of a person trying to follow it there is a connection here to directly correlating the rectangle to the sphere as it has suggested many many times in many ways,But typically nobody shows up with the numbers to explain it ) but in the higher dimension all by the same number 5238. Which incidentally requires the use of the pie version two 22/7. (22/7)/6 is also .5238. And if you divide that from 180 down to 7.5° and 75 notice 0.13095238 and 1.3095238 Representing the 7.499999 of the 299792458 m/sec . the speed of light in 1/4 wave function (48 parts of 360 ). Math unit in a circle and then if you look at 860 hz 8600 Hz and 18920 hz a logarithmic scale increasingIn the same scale that the size of the sign size of Jupiter the orbital radius of Saturn all scale to the size of the sun logarithmically, but also a function of the seconds in a day on earth if the speed of sound in horn response was tapped up just a bit to 345.6m/s the mathematical equal to 27/54/108/216/432/864/1728/(3456) Numbers are crazy but even more so when they are specific to these things in astro -physicswhere or acoustics where the harmonics in 1 meter are then 86.4, 2592 and 432. The Seconds in a 24-hour period on Earth the precession(slowing ) of the equinox in years to the -10th as well and 432 which is The radius of the sun in kilometers.
Regardless of all that what you end up with is the ultimate pressure /velocity relationship as the wave in the pipe scenario and response etc. completely in phase and aligned harmonically so to speak of the devil quarter pipe incorporate the offset driver in the same way we were the fourth or standard quarter weigh pipe however this is now compounded to the eighth order and it’s used in the way the first of the short segments of each pipe 90 cm/90° in this case we’re making a perfect circle and for some reason that’s what it does in the results it’s outstanding as if that isn’t enough you should see where the other numbers represent in that it’s ridiculous some kind of weird cross breeding of speed of light in 360° is mathematicallyShowing up in our response in the same way that astronomy uses it to calculate red shift in light to age or distance stars in plants many many many many light years away, But a function of that math is working very very perfectly and clearly pipes strangely we could not otherwise have 104.76 cm works in a 300 cm conventional pipe. That too is the 5238 At work in another way if you look up what 5236 is typically you’ll see a whole host of reasons why it’s a connection between dimensional math and spirit a cube and the rectangle and that’s my only guess is the way that shows up is such an incredible simulation/cabinet and closure of an eighth or a quarter pipe.
Once you see it working and you realize you could use it for a very low near infrasonic sub and then drop 4 ties in length of all 1(13 with l45 ) sections and right into the kick bin /mid bass region and they would overlap and the electrical impedance plot would overlap at end points . you know where the sweet spotWe have -990 DB repetitively in the 860 multiple all the way out to the end of 20 create meanwhile at split up was 48,96 and 192 intervals in a secondary and tertiary wave pattern of peaks and valleys in between their own repetition under laps the other.
I don’t know what it’s all about but all the information that is that has been inside the Egyptian pyramid forever that’s for a ride in the finding something that finally makes sense how it is is that one rectangular room in there and the dimensions that are documented in several places that were measured they all relate the sphere to the rectangle and coincidentally if put into horn response—-/holy sh!t??? It’s perfect, as it’s pi divided by six over and over all 360° worth of spots As centimeters grouped into 30 Which is actually 7.5 grouped within that30 each time , which is the other part of the speed of light function in 1/4 over and over all the way out 0, 7.5,30,75,150,225,300,330,360….720,1080,1440(192 x7.5).
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Funny how you mention 300cm horn lengths, I always find 304.80cm (10ft or 120in) to be the perfect length for all variations of TH's.
I actually read about 432hz vs 440hz music in the past. Most music is based on the unnatural frequency of 440hz and should be based on the natural frequency of 432hz.
Oh rihtvon, I’ll check out 304.8cm . Seems to be something in the area 28 Hz which is kind of a sweet spot , and 1.524, Is absolutely incredibly important number in many ways as that’s the spacing in the big big big picture of things in the universe that are major landmarks. But which starts at Mars as astronomical units as compared to 1.0 AU which is 149,896xxx kms,(earth ) which is 1/2 speed of light away @ 500 seconds And sets up a lot of things in physics. It kind of becomes an established ratio not unlike the golden ratio of 1.6 whatever eventually to the spacing of anything that’s on the hugest distances in space and time.
The Thing about those 432/440 (?) frequencies and the universal tuning to 440 or 432 as a C or A (or whatever it is , that it’s just five or 6° in temperature which will change those frequencies coming out of the speaker so I never know what to think about those or that I can even hear the difference in music and stuff unless back to back so they play something and then it’s exploited to really stand out I guess that’s probably not really fair?
But 432 squared is the speed of light however as well as the radius of the sun in hundred thousand kilometers, it represents 2 Hz when the speed of sound is 345.6 m/sec which would be kind of cool if we could adjust that in horn response?
12 hrs is 43200 seconds on earth and is jupiters radius . And it’s 432,000 years where there’s a cycle on the tilt of the earths axis which switches back-and-forth back-and-forth over 25,920years which all groups into the band of frequencies based on The grouping from …… 108, 216,324,432,648, 864,1296, 1728,2592, 3456…. 4320, 5184,6912,8640,18920… All of which line up in Many compound or tapped arrangements to show a unique absolute and repetitive alignment with that 860 interval? 864 if Speed sound was slightly different, And that makes something really unique happen obviously since that number is one of many that are very specific to so many things I guess what happens is you’re just breaking into the code of a universal value for orbiting oscillating etc. etc. throughout the entire solar system and all things within it based on that or the fact that pie represents the dimensions of the sun with a slight difference same as 22÷7 and 3.141592… Also represent slightly different versions some of which are very important to use in some areas and some work in other areas and just about nothing works perfectly ‘pi’
The Thing about those 432/440 (?) frequencies and the universal tuning to 440 or 432 as a C or A (or whatever it is , that it’s just five or 6° in temperature which will change those frequencies coming out of the speaker so I never know what to think about those or that I can even hear the difference in music and stuff unless back to back so they play something and then it’s exploited to really stand out I guess that’s probably not really fair?
But 432 squared is the speed of light however as well as the radius of the sun in hundred thousand kilometers, it represents 2 Hz when the speed of sound is 345.6 m/sec which would be kind of cool if we could adjust that in horn response?
12 hrs is 43200 seconds on earth and is jupiters radius . And it’s 432,000 years where there’s a cycle on the tilt of the earths axis which switches back-and-forth back-and-forth over 25,920years which all groups into the band of frequencies based on The grouping from …… 108, 216,324,432,648, 864,1296, 1728,2592, 3456…. 4320, 5184,6912,8640,18920… All of which line up in Many compound or tapped arrangements to show a unique absolute and repetitive alignment with that 860 interval? 864 if Speed sound was slightly different, And that makes something really unique happen obviously since that number is one of many that are very specific to so many things I guess what happens is you’re just breaking into the code of a universal value for orbiting oscillating etc. etc. throughout the entire solar system and all things within it based on that or the fact that pie represents the dimensions of the sun with a slight difference same as 22÷7 and 3.141592… Also represent slightly different versions some of which are very important to use in some areas and some work in other areas and just about nothing works perfectly ‘pi’
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Hilarious, 432 x 4 = 1,728.
12in^3 = 1,728in3 = 1ft3.
2hz & 345.6 m/sec is like 2ft3 = 3,456in3.
Also, 27.5hz is the lowest note on an 88 key piano, hence a 10ft horn = a 28hz tune.
28.317L = 1ft3.
283.17L = 10ft3, which I think is close to a 10ft TH tuned to 28hz for an average 15" sub.
Bass is a beautiful thang!
12in^3 = 1,728in3 = 1ft3.
2hz & 345.6 m/sec is like 2ft3 = 3,456in3.
Also, 27.5hz is the lowest note on an 88 key piano, hence a 10ft horn = a 28hz tune.
28.317L = 1ft3.
283.17L = 10ft3, which I think is close to a 10ft TH tuned to 28hz for an average 15" sub.
Bass is a beautiful thang!
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Wow, 17.5" wide x 32.25" tall x 31.75" deep / 1,728in3 = 10.37ft3! Those numbers represent the external dimensions of my T-TQWT (negative flare tapped horn for a square 15" sub).
A negative flare lowers the tuning versus a positive flare for a given volume. That also means the enclosure will be smaller and less efficient for a given tune.
Hofmann's law = loud, low, & small...pick 2.
I chose low and small. The enclosure is loud enough to crack multiple walls in the house with less than 140 watts going into each voicecoil from a Yamaha HTR-5730 in stereo mode.
As a matter of fact, everything has changed in my home theater system except the entertainment center, subwoofer, and enclosure that was built in 2012.
A negative flare lowers the tuning versus a positive flare for a given volume. That also means the enclosure will be smaller and less efficient for a given tune.
Hofmann's law = loud, low, & small...pick 2.
I chose low and small. The enclosure is loud enough to crack multiple walls in the house with less than 140 watts going into each voicecoil from a Yamaha HTR-5730 in stereo mode.
As a matter of fact, everything has changed in my home theater system except the entertainment center, subwoofer, and enclosure that was built in 2012.
😀 You must be in some spherical trigonometry window or zone of proportions for the ‘golden mean’ of rectangular cuboids as a low pass filter and gobs of gain from super position. . Dont Play any Brown notes or you might have a disaster😀
In the house I just have a few of these tQWToobs Spread out where they help out best in the room. I’ve been playing with mass loaded’ roar’ And Paraflex in car audio and in the garage/car audio .
The more I use the circumference of a circle as a guide to 360 in parts of 15/30 (especially to dictate an offset in the design ) and use CSA numbers that are rooted in 108/216/432/864/1728/2592), More than just comes out so good. But now I have to redo everything as dual driver, Horizontally opposed. Wish I knew this a long time ago ? it sucks as it’s all 4 ohm drivers and four ohm subwoofer amps
Also, I haven’t been able to get below 16 hertz no matter what unless I mass load i, I cannot get a quarter wave down straight pipe or anything other than taoered/ mass loaded or using some sort of I guess you could say ‘bass reflex’ action to coax it . It’s like a threshold or something??
In the house I just have a few of these tQWToobs Spread out where they help out best in the room. I’ve been playing with mass loaded’ roar’ And Paraflex in car audio and in the garage/car audio .
The more I use the circumference of a circle as a guide to 360 in parts of 15/30 (especially to dictate an offset in the design ) and use CSA numbers that are rooted in 108/216/432/864/1728/2592), More than just comes out so good. But now I have to redo everything as dual driver, Horizontally opposed. Wish I knew this a long time ago ? it sucks as it’s all 4 ohm drivers and four ohm subwoofer amps
Also, I haven’t been able to get below 16 hertz no matter what unless I mass load i, I cannot get a quarter wave down straight pipe or anything other than taoered/ mass loaded or using some sort of I guess you could say ‘bass reflex’ action to coax it . It’s like a threshold or something??
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Just means you put FOUR 4ohm subs on ONE 4ohm amp!
How are you not able to go below 16hz with a TQWP or TQWT (tapped quarter wave pipe or tube)?
I'm digging the 108, 216, 432, 864, 1728, 2592 cross section areas. Anyone that builds subwoofer enclosures should easily recognize those cubic inch volumes.
How are you not able to go below 16hz with a TQWP or TQWT (tapped quarter wave pipe or tube)?
I'm digging the 108, 216, 432, 864, 1728, 2592 cross section areas. Anyone that builds subwoofer enclosures should easily recognize those cubic inch volumes.
You right BW! I tried to stay within your CSA parameters. 16hz tuning is it.
My 1st HR model in MONTHS!
2592 x 2 = 5184.
My 1st HR model in MONTHS!
2592 x 2 = 5184.
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Ha!!! If you make it a double version of that for two Dayton audio to UltiMax 18s I’ll stick it in the corner and tear up The house before Xmas. . They won’t have another one in Stock till the end of the month, Plenty of time.
25920 is the craziest number In reference to earth and tilt of the axis procession of the equinox and quite possibly key to the sequence otherwise known as the Noah’s Ark flood or multiples of it..
This is hilarious, literally every single number that works in a subwoofers simmed as a perfect circle ⭕️ is directly connected to an archaeological/chronological fact and number /distance /hz that’s quickly becoming recognized by astrophysics etc in ‘theory’ …As a landmark star planet what have you or a mathematical concepts such as gravitational or speed of light or light you’re a parsec etc. etc.
As a landmark. Such as a star, planet, what have you or a mathematical constant such as gravitational or speed of light or light you’re a parsec etc. etc. it’s all sound pressure level absolute peaks or voids or details in electrical impedance. When set up just right
25920 is the craziest number In reference to earth and tilt of the axis procession of the equinox and quite possibly key to the sequence otherwise known as the Noah’s Ark flood or multiples of it..
This is hilarious, literally every single number that works in a subwoofers simmed as a perfect circle ⭕️ is directly connected to an archaeological/chronological fact and number /distance /hz that’s quickly becoming recognized by astrophysics etc in ‘theory’ …As a landmark star planet what have you or a mathematical concepts such as gravitational or speed of light or light you’re a parsec etc. etc.
As a landmark. Such as a star, planet, what have you or a mathematical constant such as gravitational or speed of light or light you’re a parsec etc. etc. it’s all sound pressure level absolute peaks or voids or details in electrical impedance. When set up just right
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Hmm, I find this a bit surprising considering your cosmic 'awareness'. 😉
No attempt made to be other than a proof of concept [POC] using the first ~20 Hz Fs driver I found in my HR files and using your 2592 to get acoustic gain up enough just to see the response plot 😱, so obviously a custom driver or driver array required if > 5 W power handling required. 😉
In short, either make a 10 Hz/whatever driver or calc an inverted mass corner:
[Flc] = Fs*Qts'/2
Qts' = 2*Fs/Flc
Shoot, that’s not bad considering how huge it is 😀 . (I just stuffed it the wizard)
What’s your opinion on vent location in long pipes or SonoTubesubwoofers? ? Do you Prefer to fold these so it’s back at the drivers front output or ? Especially since they’re so gigantic, if it was sono tube or similar it could be vented all the way up at the ceiling and the driver down fired at the floor? I’m kindof of trying to talk my friend into nesting his sono-tube in a folded layout , So to prevent that. But maybe it would be interesting with the ceiling corner loaded affect on the vent and the floor corner loading the front radiator ?
I don’t know if ‘cosmic awareness’ is helpful or a hindrance?
On one hand it tends to use numbers that work out pretty good in circle maths like this stuff, But meanwhile everything you see is over analyzed as every single number you ever see if it’s familiarLOL!! 😀 especially area codes and ZIP Codes Because of radians We’re most of this comes from especially a point of concern or issue.( Void) No matter what, it is really bizarre to find out that the entire offset driver position for the 3/4 harmonic is directly related to the same mechanism That gaps leap year repeatedly And in four years time represents the same number In degrees of that circle as 1462 million kilometers, or hz as a void from a harmonic equivalent to 1440* spins at 360* in 90* parts? It’s kind of like ‘Bode’s Law’ Except our home responses deadly accurate locations of things and numbers. I’m sure points out a way that cycles since you’re very much represent history of this planet which clearly is a very inactive moment and it’s long overdue for a little extra terrestrial rock or ice chunk or both to do what it always does we just seem to have forgotten? You can almost map out everything I mean Haley’s comet is only off for a year or two if it ever is, Appears that the dinosaurs Extension and that area of concern as far as debris in our travel through space in the media about your system is n a cycle not unlike 22,44,66 years (million) , And there’s another cycle most recently about 4500 years ago and again 11 1/2 or 12 where it seems global warming and the end of an Ice Age is a bit prematurely interrupted and very much so and everything that’s going on right now is perfectly normal as far as the earth is goes.Not that it would be tremendously good thing to clean up our act as humans, but it might be Time to start looking a little bit more seriously at protecting this planet or the future because we damn near gone extinct at least twice if not four times?? And that is from something that came out of the sky it’s just a lot more than the one that did dinosaurs ran into in their huge chunk of ‘ time’. Heck half of stuff astrophysicist barking about on YouTube recently or of the last half a decade or so can be found in our response already???