During the process of completing these two loudspeakers, the MathCad models went through a continuous evolution which produced more accurate calculated results leading to better correlations between the predictions and the measurements. My first two quarter wavelength style enclosures were designed mathematically, built, and then final acoustic and impedance measurements were performed. This decision set off the chain of events that eventually resulted in this website. About 15 years ago, I decided to try and develop my own mathematical model to simulate transmission line loudspeakers using the MathCad computer program. Over the past 15 years, I have built a number of closed and ported box loudspeakers based on the equivalent circuit models descibed by Thiele and Small. However, for a long time the lack of a proven mathematical model prevented me from actually pursuing and building this style of loudspeaker enclosure. I have been interested in transmission line loudspeakers for almost 25 years. Hence my terminology of a "Quarter Wavelength Loudspeaker Design" to describe the content of the articles contained in this website.
All of these enclosures utilize acoustic standing waves that can be described as multiples of a quarter cycle of a sine or cosine function. Even more exotic and rare in the audio marketplace are the TQWT and the horn loaded enclosure designs. This style of loudspeaker has been on the fringe of the audio mainstream for many years with just a few smaller companies building and marketing this enclosure design. The most common example of a loudspeaker that relies on a quarter wavelength acoustic standing wave is a transmission line enclosure. Welcome to my quarter wavelength loudspeaker design website. Two 12s is most likely what i want to try this time.Quarter Wavelength Loudspeaker Design Quarter Wavelength Loudspeaker Designįacebook Group : DIY Transmission Line Loudspeakers - Theory, Design, and Buildingįacebook Group : DIY Open Baffle Loudspeakers - Theory, Design, and Building
When i say Tlines im talking actual folded Tlines and not tapered lines or horns or tapered horns or these so called labyrinth boxes. Thank you thats what i kinda figured is that a couple of 6.5s wouldn't really be satisfactory other than the cool factor. This will save you a lot of time, money and yield way better results. In general instead of trying to be different you should be honest with your goals and build the system YOU want based on your goals and not other peoples imagination. Don't take it personally, but take everything you have read with a grain of salt and dig through the nonsense. I understand though that there is a ton of misinformation on the web and it isn't your stupidity, but the sites that you have found positive responses towards T-lines in a car.
T line box for 8 sub drivers#
Add to that you are now using drivers that have way less capability so even if you do it perfectly you will have a significantly worse response in every aspect and it is an exercise in stupidity.
T line box for 8 sub trial#
If you can't operate Mathcad, don't have Martin King's worksheets, then expect that your trial and error will be a failure and take MANY iterations to get it to somewhat work. 90% of the T-line discussion on car audio forums are not Tlines, but slot ported boxes. If you don't like your 12 you will be SEVERELY underwhelmed with a pair of 6.5's. Im just really intrigued about the T-lines and also intrigued on 6.5s just cause it would be badass to have a pair blowing the hatch off. Im open to to all opinions and not stuck on having to have a T-line.
T line box for 8 sub driver#
Ive yet to read anything bad about T-lines other than physical size to driver ratio and that they are not the best for "spl" setups. This box would fit in the hatch perfect because of the angled back.I know prefab=yuck.
Was in a 2.5.ishcf at 33hz Have also tried it in a 2cf at 38hz and now its in an unknown size and tuned box which is damn near identical in size physically to the 2.5 box but the port is slightly wider and a whole lot longer.Metallica ozzy ac/dc etc hits slightly harder on the 2.5 box while the unknown box hits alot harder on most other types.overall the unknown box is the best so far.Im beginning to think these AB subs are just not that good or that ive just reached the limits of a single 12 and should just get two 750ish watt 12s. What kind of box is your current American Bass 12" sub in now?