A good example of why you can't just look at chambers to determine order # would be bp4 vs bass reflex. Bp4 has 2 chambers and is 4th order. Bass reflex has 1 chamber and is also 4th order! Also, whoever said TL is 4th order is wrong. It's a 3rd order enclosure!
A TL and a Bassxreflex are both 4th order . Maybe Reference Martin King or Scott Hinsons instead of hexibase videos on YouTube?
http://www.quarter-wave.com/TLs/TL_Theory.html
http://www.quarter-wave.com/TLs/TL_Theory.html
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I have learned a lot from Pete over the years and he was one of the first influencers on YouTube for this content. Maybe instead of dming me and/or apologizing for being "pedantic" you should just realize that you're actually being "eristic" and "quarrelsome" and try something different.
PS, I hate to break it to you, and whoever else's reputation your trying to muddy, but a TL is, in fact, a 3rd order enclosure. All you have to do is COMPARE the responses. Which btw, that info is on NO Hexibase video.
PS, I hate to break it to you, and whoever else's reputation your trying to muddy, but a TL is, in fact, a 3rd order enclosure. All you have to do is COMPARE the responses. Which btw, that info is on NO Hexibase video.
Love his channel!
That chamber is vented, so that's 2 orders, not 1.
A sealed enclosure is 2 orders, whether it's the driver providing the output or a hole (acoustic guitar).
This enclosure is still a BP6S. The chamber is basically an irregular expansion of the low tune port.
At the end of the day, acoustics are complex and nuanced with often overlooked and misunderstood variables. The dilemma here is obviously two or more interpretations on what defines an acoustic order. Most would say chamber #'s, apparently some say impedance spikes or dips. I say that the rolloff on either end of the pass and is what determines it because that is the order. I don't really care if you stuff the woofer into a soft turd. And with that, I will just agree to disagree.
Chamber 1 = 1 order.
Port 1 = 1 order.
Driver = 2 orders.
Chamber 2 = 1 order.
Port 2 = 1 order.
Chamber 3 = 1 order.
Port 3 = 1 order.
That list = an 8th order.
Of course there is a third order. Because some would say that it's not the components of the crossover that determine the order of filtering, but the order of filtering determines the order of filtering.... Also transmission lines can be created with 24db/oct filtering making them 4th order. Often they are 18db/octave.
I do mistakenly refer to some of these simpler alignments as bp rather than they're effective hp filtering.