dred Posted November 1, 2008 Report Share Posted November 1, 2008 (edited) Didn't try to scare him ... the 20 hz thing was just an example I have built quite allot of enclosures for car and home use but never feel the need to post them on the internet, i'm more of the lurking kind thats why my postcount is subzero BTW: sonotube lenght = speed of sound : frequency Hope that is of any help grtz. Edited November 1, 2008 by dred Quote Link to comment Share on other sites More sharing options...
Fish Chris Posted November 4, 2008 Author Report Share Posted November 4, 2008 Hey Dred, sorry for the late reply {my monitor went out.... 2 days to replace it} sonotube lenght = speed of sound : frequency Yea'.... this is what I'm trying to believe.... but if it were so simple, why is their SOOOO much confusion over calculations for t-line subwoofer setups (at least, relating to individual subwoofers) ? I've heard of stereo / mathematical gurus, who worked for years, to create a t-line calculator that was even "close" to accurate" ? All the while, I'm sitting there thinking, "Okay... So as kids, we made these little horns out of straws. The longer they were, the deeper sound they made". How freaking simple is that ? Hmmmm, Fish Quote Link to comment Share on other sites More sharing options...
dred Posted November 10, 2008 Report Share Posted November 10, 2008 After reading this again i'll have to refine it a little bit. The formula: Speed of Sound : Frequency = SonoTube Length, is a full wave length. You'll have to divide SonoTube length by 4 for a quarter (and 2 for half) All the above is for a straight line enclosure. Best thing to do is built a test thingy nothing fancy just some crappy old 6 or 8" speaker and a square enclosure, mount your 'sub' on a plate that can slide up and down in the enclosure and move it. grtz. Quote Link to comment Share on other sites More sharing options...
Forevrbumpn Posted November 10, 2008 Report Share Posted November 10, 2008 Hey Dred, sorry for the late reply {my monitor went out.... 2 days to replace it}Yea'.... this is what I'm trying to believe.... but if it were so simple, why is their SOOOO much confusion over calculations for t-line subwoofer setups (at least, relating to individual subwoofers) ? I've heard of stereo / mathematical gurus, who worked for years, to create a t-line calculator that was even "close" to accurate" ? All the while, I'm sitting there thinking, "Okay... So as kids, we made these little horns out of straws. The longer they were, the deeper sound they made". How freaking simple is that ? Hmmmm, Fish Why there are people like Martin King who has came up with all these formulas to perfect t-lines(more based on tapered and horns) , its more based on the individual speakers impedance, and woofers air displacement, ect ect A real tline the impedance graph of the woofer, and the box are the same, so what happens when you end up testing a speaker on a speaker testing program out of tline, and in tline, everything flips around, perfect mirror image as I have said before, there are SOOOO many ways to pull off a t-line, to think there is 1 common formula everyone should use, is ridicules As long as you get the quarter wave theory in mind, and basic principles you will be fine Quote I have a ritual called "terminator". I crouch in the shower in the "naked terminator" pose. With eyes closed I crouch for a minute and visualize either Arnie or the guy from the 2nd movie. I then start to hum the T2 theme. Slowly I rise to a standing position and open my eyes. It helps me get through my day. The only problem is if the shower curtain sticks to my terminator leg. It sorta ruins the fantasy. Link to comment Share on other sites More sharing options...
jhmeg2 Posted July 14, 2009 Report Share Posted July 14, 2009 hey bumpin, how would it work if instead of a 1/4 wave, I did it as a 1/2. yeah it would be bigger, but would it be more eficient and or louder? Quote ////Alpine, Eclipse, Load Boss, Pheonix Gold, MB Quart,Digital Desings, Memphis, Stinger, Periphial, MTX, Visualogic Link to comment Share on other sites More sharing options...
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