Quarter Wave Box Calculator
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I had been driving from last 8 years now, car audio was very close to my heart, as i spent anywhere from 1:30 min to 2hrs daily back n forth from college. I did whatever i could with little or no money to upgrade and to customize my sound experience.
Jun 24, 2015 - Inspired by debates on the Internet about quarter wave designs with Tang Band 3˝ full-range drivers, the author decided to design its own. Subwoofer box design software for building bandpass, vented, ported. Box Calculator to compute the dimensions of a box/rectangular shaped enclosure.
From SQ to SPL, i did all. Now that i am finally an architect, i could spend more of my time at home for relaxing then worrying about my design to be submitted. I had gathered a lotta info in music to start carefully in my home audio project, i did some 4-5 custom builds while i was in college for home too but never to seriously and didnt had a lotta space in the room. Well you would know about the space issue, if ur a college student. I tried sealed, ported, 6th order bandpass, dual chamber reflex, dual chamber dual reflex, horn loaded enclosers with drivers ranging from 10' to 3' full range drivers. I had the cdt audio sona pods installed in my room taking care of the 5.0, they are 2' full range drivers, that go down to 200hz.Some of the best speakers i have heard within 1lakh range home theaters from brands like elac, wafedale, tannoy, polk audio and many more, yet costing 1/4th of those big brands. So i needed something that will take care of 30hz to 200hz, yet is punchy, musical and ca go down to 30hz.
THIS WAS A BIG DECISION! Not many 8' -12' drivers go down to 200hz and roll off to a 6db slope beyond with a flat yet musical response, and those which are, costs a STEP 1: Decide the equipment! Not all spkrs/subs sounds sweet and comfortable in a t-line. Not all spkrs/subs are designed to be used in t-line too. If you mates have a some understanding abt theil-small parameters, look at the Fs of the spkr/sub.
That will tell you the tuning freq to use the thing at. The qts and qtc will tell you if the spkr/sub is suited for the t-line.
Then there is the box rise!! This is a killer, lesson for some other day.
I picked up a pair of CDT audio Qes 680 6.8' drivers. This is a amazing little puppy. Awesome in vocals, yet a deadly sub-bass driver! With a xmax of 15mm and xmech of whooping 25mm! This small little driver will sure move lots of air.
03 Serivanija - Jataka. Once on a time in the kingdom of Seri, five aeons ago, the Bodhisatta dealt in pots and pans, and wa. 
Pansiya Panas (550) Jathaka Poth Wahanse available to free download now. පන්සීය පනස් ජාතක පොත් වහන්සේ ඔබට නොමිලේ මෙතැනින් ලබාගත හැක. Rich dad poor dad sinhala pdf පොහොසත් පියා සහ දිලිදු පියා - ඉතින් කට්ටිය කොහොමද. දැන් දැන් වැඩිය බ්ලොග් එක පැත්තේ එන එකත් පොඩ්ඩක් අඩු වෙලා තියෙනවා. The Pansiyapanas Jathaka Potha is a great canon of sacred Buddhist literature which was translated in to Sinhala from Jathaka Atuwawa in Kurunegala period. This collection of some 550 anecdotes and fables depicts earlier incarnations of Siddhartha Gautama.
Also they fit the puzzle of a driver being musical, which can do vocals, yet acts like a sub. All being inexpensive. People might think the efficiency is the drawback, but i have 1000watt rms at my stake for the subs alone! Here are few specs for the same • Frequency response 10Hz-4000Hz • Power handling: 300Watt Pk. • Sensitivity: 84dB • Cone: Mid/Kevlar/Fiber glass • Magnet weight: 30 Oz • Voice coil: 38mm • Fs: 39Hz STEP 2: Do lots of calculations. From placement of driver to cancel 2nd and 4th order harmonics, to cross section of path, length of path, amount of stuffing needed and change in response due to stuffing.