Posted by roncla [ 209.34.35.52 ] on March 31, 2004 at 22:31:21:

In Reply to: Effects of a low pass notch filter on BR versus TL: speculations posted by akhilesh on March 24, 2004 at 12:21:29:

A transmission line has a primary resonant frequency, but it also has multiple harmonics above that. So I would expect a transmission line to have more resonances than a bass-reflex cabinet, with the TL acting sort of like a horn.

True, but in a straight TL the harmonics are in an odd multiple order.In a TQWT the harmonics are in an even order(closer together) which gives a greater LF response bandwidth.
Even though the TQWT will not go quite as low as a TL in frequency (given the same sound path length)i like the TQWT a bit better as the LF has a better response over a greater frequency range.
ron

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