Groomlakearea51 Posted December 17, 2008 Share Posted December 17, 2008 Very interesting!!!!! [Y] [Y] This thread reads like a "Cliff Notes" on Bruce Rozenblit's "Audio Reality" book.... (which I read a chapter every day at 0:dark hundred hours before I go to work and lose my mind!!!). Audio Reality is probably the best primer on these principals and the relationship between the principles and audio equipment I have ever read. In an analogy, I'm not the brightest bulb in the chandelier when it comes to the physical relationships between the properties. Was never my "subject" in charm school... Playing catchup when reading a number of the Forum threads is frustrating because really should know more about how the electrons float around... Then a very kind forum member sent me Rozenblit's book and I hav just about worn it out!!! But now I actually understand DeanG's. Don's and the other's posts!!!... or at least understand why it works that way!!! Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted December 17, 2008 Share Posted December 17, 2008 Yah Vol Dickey old chum! Quote Link to comment Share on other sites More sharing options...
WMcD Posted December 17, 2008 Share Posted December 17, 2008 Naturally I agree with the technical stuff. The d.c. resistance of a raw bass driver tells us only one parameter. A) But many if not all the parameters of the bass driver can be calculated from the a.c. impendance as it varies with frequency. If we have the equipment for it. And we have to do one other thing, that is to add a known mass to the diaphragm, or increase the spring by putting a box of known volume on one side of the driver (like a Heresy box). This is an air spring. With a lot of math and the two curves, we can infer the important T-S parameters. From there we can calculate a lot of the mechnanical and electrical parameters. The first (T-S) are important to designing the bass system. Theil Small parameters. The impedance vs. applied frequency (a.c. impedance) is also important to know in designing passive crossover filters. This is because a given passive filter is attached to the driver. The filter design depend on the impedance presented to it by the driver. Wm McD Quote Link to comment Share on other sites More sharing options...
Deang Posted December 17, 2008 Share Posted December 17, 2008 "With a lot of math... " lol, uh yeah. I once told Al; there are three kinds of people -- those who can do math and those who can't. Quote Link to comment Share on other sites More sharing options...
Deang Posted December 17, 2008 Share Posted December 17, 2008 "what would Jackson Bart do? huh?" No, someone who always gets good results: What Would Jack Bauer Do. Quote Link to comment Share on other sites More sharing options...
WMcD Posted December 17, 2008 Share Posted December 17, 2008 There are two types of people in the world. Those who think in binary and those who don't. ---- All generalizations are false . . . including this one. Smile. Quote Link to comment Share on other sites More sharing options...
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