A hi fi news article about a new bass speaker design was published, written by. Voigt tqwp the ultimate loudspeaker design the book worm. If i was designing a folded pipe, all i can say is id position the driver and begin the internal baffle in the same way, at the halfway point of the driver. Cube audio bliss a loudspeaker a new fullrange driver and speaker system. This is ok because the morel can actually go down below 1 khz although i would never run it that low. The lumex transbrite light pipe family consists of over 70 standard light pipe technologies in single or array, molded or flexible, single or multicolor formats with right angle, vertical or horizontal packaging for.
We will include automatic pipe squelton and cad support in order to have. A tapered quarter wave pipe or sometimes tube hence tqwt. This image is of the tdl and utilizes a terminated line for the mid as well as a classic line derived from the imf next to it. Calculate tapered quarter wave tube hifi loudspeaker design. Pioneer a11ec8002f 412 full range driver for the drivers. The discoloration is a 5050 mix of carpenters glue and water which i painted on to reduce the edges inclination to adsorb the paint, which i will spray on tomorrow. I didnt fold the line since that makes construction far more difficult. Hear the brilliant midrange that makes instruments like the piano come alive or the sound of the strings being strummed on a classical guitar.
Single fold voigt pipe aka tapered quarterwave tube tqwt, tapered quarterwave pipe tqwp classic 2fold line frontterminus. First described by paul voigt in 1930, tqwts allow a good qualitytoprice ratio. Its an interesting point, that driver positioning question. I found augspurgers software too specific to work in more generalized cases. A folded voigt tapered quarter wave pipe with the trickest crossover giving clarity never before heard with a sound stage that is alive and wider than the speakers themselves. The 3d design software is available free for download. Im using sheet metal with the correct defaults but im not really sure how to make it work, attached is a picture of what should be a 90 degree angle after the folding any help. Design methodology both flexible and rigid pipe depend on proper backfill. Question on the type of wood used in speaker construction. Its amazing how good a simple, cheap, oneway driver can sound in the right enclosure, like a voigt pipe or a transmission line. Autopipe nuclear nuclear piping design and analysis software for critical safety pipework to asme class 1, 2, or 3 standards. Importing and using our pvc components is easy and hasslefree. I have heard people say that it is very difficult and time consuming to design. Have i forgotten to mention that the word pipe could have several interpretations, sewage pipe, water pipe, organ pipe, pipes of bagpipes, etc.
Bib is a single fold backloaded pipe horn design that has been developed at diyaudio to the point that there is a spreadsheet that will design the horn with only 3 user inputs fs, qts and vas. Sketchup is a free, easy to use, 3dimensional sketching program provided by trimble. Due to its relatively high efficiency the design is frequently employed in. There is always a first for everything, and this is my first transmission line tl speaker build. Design and construction of a mass loaded tapered quarter wavelength tube ml tqwt using the fostex fe164 full range driver by martin j. I myself, cannibalized the voigt pipes and have placed the fostex in a folded horn cabinet, a zhorn that tom zuworsky made for me. Automation through use of programming as in case of autolisp in autocad. Question on the type of wood used in speaker construction and effect on sound showing 140 of 40 messages. It is best modeled with marin kings worksheets or aj horn. He was educated at dulwich college and university college, london, receiving a b sc.
Bob brines lt2000 ml tl design with a lowther dx4 driver built by toby patton. The inputs will be engine specification and the outputs will be pipe dimensions. Nd91 folded horn boombox techtalk speaker building. The pipe system is defined using pipe flow experts incredibly intuitive user interface, which also supports isometric 3d piping layouts. Speed the design of class 1, 2, and 3 nuclear piping systems with advanced analysis capabilities such as. Folding a square pipe hi, igor thanks for taking the time to model my part the problem im having is that i want to use inventor to cut in laser and bend manually a square tube, so i converted a solid extrusion to sheet metal in hope that i could use the fold tool, all this to recreate the joints i want to cut with laser then the folding. Folded horn speaker design explanation and calculator. Procad software provides piping design and electrical drafting software in 3d and 2d for plant design. Comprehensive diy voigt pipe speaker enclosure guide. Its a pointy ended pipe horn like a voigt pipe and since its conical its not the most efficient horn design but it doesnt get any easier. Dear all,thepetrostreet has released their next software petropipe covering the basic piping design. Block flow diagram is a schematic illustration of a major process. As i mentioned above the design also works really well with a subwoofer as its very smooth bass rolloff allows you to integrate a quality. A page about the theory behind the pipes a page describing a folded voight pipe project, for those who dont want 6foot tall speakers.
It is used extensively by the design and the documentation team. Oct 22, 2017 horn loudspeakers are the best when it come to efficiency, but they are too big for woofers. This is an addendum to the lost art of loudspeaker design. The mistake turned out to be a great match for my voigt pipes. King, 42101 page 2 of 76 correlating these third generation worksheets, before they were distributed, was a high priority.
Please let me know what it sounds like if you build it. Ultimately i built the sealed box design because i wanted the subwoofers to have. Best software for plant piping design autodesk community. Pipe design software freeware software free download pipe. Aug 17, 2012 petropipe piping design software posted in free for all. The objectives of this project are to study, develop and maybe sell a software for pipe designing. I suspect that some of todays big pipe designs might be the analog of the. It is a story of two and a half men, no im only joking. Engineering and design of liquid process piping systems.
Try limiting your search by using the advanced search options below to select an author, a date range, a single forum or more specific search terms. Transmission line speaker build by soundblab youtube. Due to its relatively high efficiency the design is frequently employed in fullrange. There was quite a food fight at diyaudiofullrange as to whether it is a horn or not. Pvc piping, at last we leave the theory part of things, is a very convenient stuff to work with. Dhex is a software tool that is made to demonstrate the chemical design calculations of double pipe hairpin heat exchangers. The voigt pipe is a type of loudspeaker enclosure that embodies a combination of transmission line, ported enclosure and horn characteristics. Now the finished product, visaton bg 17 voight pipe speakers. I was searching the net for a new fullrange design to try and found this one. By tapering the pipe as shown, the resonances will spread over a wide range of frequencies, thereby eliminating the onebassnote samba that can sometimes be heard in poorly designed reflex and tl enclosures.
The software will do all the thermal calculations involved in the design and will generate a summary of all resultsetc. Peters loudspeaker designs northwestern university. Analysis and design can be applied to all piping systems in addition to interaction with the supporting structure all in one program. Back then we worked by rules of thumb, 14 wave length was the pipe length, stuffing was trial and error, vent area was determined by how much you wanted to load the driver. Hear the brilliant midrange that makes instruments. It seems to me this design attempts to absorb higher freq. Pipe thickness calculation boiler piping, process piping, gas and water pipelines as per asme piping codes2. If i was designing a folded pipe, all i can say is id position the driver and begin the internal baffle in the same way, at the halfway point of the driver, and i couldnt advise shifting it. Single fold voigt pipe aka tapered quarterwave tube tqwt, tapered quarterwave pipe tqwp classic 2fold line frontterminus this image is of the tdl and utilizes a terminated line for the mid as well as a classic line derived from the imf next to it. A folded tapered quarter wave pipe using the fostex fe167e full range driver rear view built by richard goodland.
Having said that im really not a big fan of full range single driver speakers. Ray tracing is a method of calculating the path of light through a light pipe through a virtual model lumex uses stateofthea rt ray trace software with precise 3d cadcam models for optimal light transmittance to ensure proper light pipe design. I need your help picking the right wood, and getting the correct. Lowther voigt pipes are up and running first, the lowther people sent me a pair of ex3s instead of dx3s. Piping design software works on different platforms like windows, linux, mac and others. About 15 years ago, i decided to try and develop my own mathematical model to simulate transmission line loudspeakers using the mathcad computer program.
Includes free software and a complete set of plans for the dynatone loudspeaker. Engineering software for piping analysis and design. Piping design software is used by engineers to draw piping and instrumentation diagrams along with the process flow diagrams. You can make ads in the engineering toolbox more useful to you. There is a new highsensitivity folded horn speaker kit being offered by. Question on the type of wood used in speaker construction and effect on sound. Tapered quartere wave pipe loudspeakers, a diy guide. So here is my voight pipe speaker project using the visaton bg 17 drivers. There is piping sizing, piping cad, piping stress, piping corrosion, piping insulation, piping flow, etcall of these fall into piping design. Voigts quarter wave pipe fills the room with sound in a way that horns seem to do. Secrets of the voigt speaker by peter skinner paul voigt was one of the true pioneers of audio and loudspeaker technology. I have supplied an alternative folded pipe, based on my straight pipe. The tool helps to quickly create the 3d piping model.
The voigt pipe is a compromise it gives much of the performance benefit of transmission lines, but the simplicity makes them less aggravating to design. I built these back in the late 1990s, before any software for voigt pipes existed. They are the folded variety, which means the tapered line is folded back to. Shown below are some pictures of quarter wavelength loudspeaker designs that people have built. Visaton frs8 full range drivers in bipole enclosures front and back views built by esau cardoso. You can use the piping software you are most comfortable with or the platform you have thus not needing to change the computing platform. A loudspeaker that stands head and shoulders above all others. See more ideas about speaker design, speaker box design and diy speakers. This design was build before i learned of martin kings ml tqwt technique. I need your help picking the right wood, and getting the correct dimensions, stuffing, etc. Similar to transmission lines, the tqwt is different by its shape, a kind of horn is used as back load but the driver is not placed at the beginning of the cone as usual but on its side. It does however revolve around the work of two men from the 20 and 30s. Lens designers create classical lens systems such as cameras, telescopes, or microscopes, and primarily use commercially available optical design software which are really lens design programs.
In a tqwp the tapered pipe is folded in half, but the theory is the same, it just makes. There is only one change in direction for the sound wave and the end of the line is. Modeling light pipes in asap optical software, engineering. Some of these projects are direct copies of my designs while others are original designs generated using my mathcad worksheets.
Modeling light pipes in asap 5 light pipe design and analysis the optical design process means different things to different people. Due to its relatively high efficiency the design is frequently employed in fullrange loudspeaker designs. A software that has features, functions, solutions to th. You can use sketchup to construct your pvc project, use it to view some of our freely available pvc plans, or just play around. In the process, it became clear that the direction my work was headed made it difficult to continue to classify it as strictly transmission line theory and design. This will help you to make the choice of the best piping software. For flexible pipe, deflection allows loads to be transferred to and carried by the backfill. Diy audio projects forum cheap voight pipe speakers with. Petropipe like other software of thepetrostreet is free to use and has the following features. Which is the best software for plant piping design in terms of following parameters. Mar 15, 2015 a loudspeaker that stands head and shoulders above all others. Design and construction of a mass loaded tapered quarter. I felt that the best way to present and maintain this ongoing study of quarter wavelength enclosure design was to construct my own website.
With that in mind, the option was to use a design first introduced by paul voigt in 1930, known as final year project the offset bipolar transmission line. These are the plans for a pair of voigt pipes built by herbert jeschke, taken from. The basic design for this crossover evolved from a suggestion that comes with the d1405. Introduction to piping engineering by gerald may, p. The woofer crosses over at around 900 hz at 12 db per octave, the tweeter at around 10 khz but 6 db per octave. With that in mind, the option was to use a design first introduced by paul voigt in 1930, known as final year project the offset bipolar transmission line enclosure by ryan davis 21177902.
Having developed a taste for transmission line speakers after hearing and buying a friends voigt pipes, i decided to do a tl subwoofer design too. It is highly regarded by some speaker designers, as evidenced by established manufacturers such as castle. Smashwords the ultimate loudspeaker design a book by. Introduction to piping engineering information about piping. I rounded the edges and applied a 12 roundover to the front and sides. Working before the second world war, he was one of the first to devise the loudspeaker driver, had thirtytwo important patents in the field of sound reproduction and, in 1934, created the worlds first great loudspeaker. And avoid the traditional voigt pipe created by the lowther club of norway in what i can only assume was a moment of madness like the plague. Sspipe 3d plant design, piping software for pipe routing in refineries, industrial buildings, commercial complexes, powerplants, chemicalplants, more, from anusa india tahoe design software maker of piping design, pump selection software, custom selection software can be used with tds product promotion cds to promote products with multimedia. The idea was that putting a drive unit half way down a pipe youd get a bass resonance that would boost bass output. I left it here to show what the results of weems technique are. Voigt pipe and variants kind of a mix between mltl and positive taper tl regular old boring constant cross sectional. Im trying to fold a square pipe i made with some cuts in order to make an angle with it. I made a pair of voigt pipes and audiogon discussion forum. Autopipe vessel design and analysis software for pressure vessels, heat exchangers, tanks, and air coolers.
I saw large and beautiful wood horns, folded and of round section. The first piece of data available was the measurements i had made of the. A voigtstyle design could be calculated for a specific driver and for some. Piping design and pipe stress analysis software autopipe. Common metals and their corrosion resistance to aggressive fluids like acids, bases and more. The voigt pipe acts as a cross between a horn and a transmissionline tl. That is, if the speakers are placed close to the wall behind them and or are of a bipolar design.
The idea was that putting a drive unit half way down a pipe youd get a bass resonance that would boost bass. Speaker projects back loaded horn design over woodworking plans. First described by paul voigt in 1930, tqwtqwt uses like a transmission line design pipe lenght of 14 wavelenght of drivers resonance frequency. Backfill characteristics, and also trench configuration in the case of rigid pipe, enter into the design procedures. Spiffy one way full range transmission lines i find crossoverless speakers quite beguiling.