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Old 12th April 2003, 05:02 AM   #1
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Join Date: Nov 2002
Location: NZ
Default weird T-line

Find 1 philips 12inch (fs=44hz Q=0.19)

find a 8inch philips on a conical pipe.(43hz or so)

put the 12inch on the Mouth of the conical pipe.remove the 8inch speaker.

make a port,at the end of it (the old throat)

it is now a throat=0.6x Sd mouth= ? 0.2x Sd Decreasing area conical pipe!

listen to see if it makes any bass.

(mine doesnt make too much) the cone moves alot but just makes flapping noises. it makes quiet 50hz but the speaker can only take 40watts rms anyway,and is low excursion :-D.

how unscientific is that!
i think the speaker would work better in a ported box the same size lol.


i think i should have 4x Sd or somthing
il put that into the mathcad tl files :P
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