The font size used for my 6th edition as quite small, dust off those reading glasses! Even the hundreds of graphs will need a magnifying glass if you need to determine what is presented in the graph. Clearly, the size reduction is a compromise to reduce page count, and thus minimize cost, but in my opinion, this is a few steps boyond the boundary of good printing techniques. Look for larger sized fonts and reasonably sized graphs in the next edition. The book rarely presents alternatives to commercial software (and, similarly, to commercial hardware) for calculations and measurements. Some calculations, maybe even most of them, can be handled with a simple spreadsheet, yet the book rarely offers the full equation, instead directing the reader to commercial software, which costs well in excess of the price of a couple pairs of good bookshelf speakers. Home built test equipment is presented, for lesser devices, but here again, for all Thiele-Small parameters, you'd need to purchase commercial equipment. Some tests do not need professionally designed equipment! Regarding content, some points are not definitively explained, despite the authors obvious skills for explanation. In some cases, the equations which are actually offered contain unexplained terms: you might have just read about one term, but the equation might be calling for a subscript of the term, with no explanation as to what conditions define the subscripted term.... what, then, would you use for a value? My review sounds a bit negative, but above all, these kinds of problems can easily be searched in online forums related to loudspeaker design (if indeed you have internet access). Should there be any confusion: this is a reference, a standard by which other tutorials are measured. When in doubt, ask online. Good book for the beginner, despite a few concerns.