I had to put my printer into landscape mode to get it to print right and it totaled well over 100 pages.
Interesting, I just checked the Installation Notes section in "print preview", and you're right. the extra-wide illustrations in the section about Subwoofer outputs have broken the printer-friendly-ness of the FAQ. I now see why you had to print it landscape. Hmm, dunno how to fix that, those pictures will be hard to shrink down without some work.
There is also the option that Drakino suggested, making a link to a printer-friendly version. All it would need to do is get rid of the left-hand navigation bar and put all the sections together. Tom?