Triticum Agricolam Posted November 17, 2015 Report Share Posted November 17, 2015 Making it longer would tune it lower but then you will lose output at higher frequencies, with the amount of line area you have the output is going to be extremely peaky. I bet it smashes from 40 to 50 hz, its going to drop off hard below that, as you have experienced. How is the output above 50 Hz? "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
Yellow1000 Posted November 17, 2015 Author Report Share Posted November 17, 2015 43-46 hz or so based on a tone generator will rattle my teeth lol, above that it's still pretty loud. Below that it's all but non existent. Very peaky. I am hoping lengthening it will flatten out the response some ? It seems to be a great burp box currently. Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted November 17, 2015 Report Share Posted November 17, 2015 Lengthening your line will move your peak downwards in frequency, but it won't do anything to reduce it in amplitude, unfortunately. To reduce the peak in amplitude, you can stuff the line with polyfil, but the better solution is build a new box with different line area/taper. This is the problem with the "one-size-fits-all" design methodology for t-lines that says to make the line area equal to cone area, it almost always results in very peaky output. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
Yellow1000 Posted November 17, 2015 Author Report Share Posted November 17, 2015 But theoretically, I can move the peak down into the 30s where I want it ? Any suggestions how much to extend it ? When I tried adding about 7-8 inches to I didn't do it in a manner that would have truly showed me results. Lol it wasn't sealed off very well. Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted November 17, 2015 Report Share Posted November 17, 2015 Sure you can move the peak down and that's certainly worth a try. To get it down to around 35 Hz, you need to add about 20" and it needs to not have any leaks. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
Yellow1000 Posted November 17, 2015 Author Report Share Posted November 17, 2015 I'm going to try that! Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted November 17, 2015 Report Share Posted November 17, 2015 I'm going to try that! Let us know how it works out! "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
sirhutson Posted November 17, 2015 Report Share Posted November 17, 2015 yes please, i am doing this exact thing right now and would like to know what the difference is with a longer line length. boss 1200 and a ipod nano. Link to comment Share on other sites More sharing options...
3vil Posted November 18, 2015 Report Share Posted November 18, 2015 I apologize for the misinformation, I was thinking it was (tuning frequency)/(speed of sound), but it's the inverse of that. Link to comment Share on other sites More sharing options...
sirhutson Posted November 18, 2015 Report Share Posted November 18, 2015 Ive got mine built for 2 sw2508s at a 35hz line length. I havent completed the box quite yet tho so im curious how it will change it. boss 1200 and a ipod nano. Link to comment Share on other sites More sharing options...
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