The time it takes to write a review can vary by quite a lot. If it is a simple product with nothing unusual, and nothing else interferes with the review process, I can have the review done in under three weeks. If the product is complex, or I run into some difficulties, or something else impedes the review, it can take months.
If AH were a subjective sellout site like most of the others, you could just follow the "industry format" and whip out 3 or 4 reviews a month. The template is easy!
Part I: The Story. At least 2 paragraphs about your trip to Vegas, how nice the food was, meeting up with audio CEO's, the company history, etc. If you promise enough full-color pictures, you might even be allowed a factory tour!
Part II: The Presentation. Here is where you earn your website advertising dollars. You briefly detail the anticipation of receiving the speakers, as well as the blessed day when they arrive, how great they look, but most importantly, the very expensive cables and accessories you did the testing with. Some publications even go out of their way to list the price of each component, to get that "high end" street cred.
Part III: The Review. By this point the reader just wants to hear your subjective opinion of the actual product. This will be a few paragraphs of mostly-meaningless industry buzzwords ("sibilance" "PRAT" "presence" "air" "liftng the veil" "holographic").
Honestly the only useful part of any sellout speaker review, this is where I find new artists and music to seek out and listen to. You will give every product a favorable review, but will always put in a side quip that a much more expensive piece of gear you recently reviewed sounds "just a wee bit better." You might even masturbate your advertisers a bit more, by saying it sounded better with some $2,000 power cords or a particular tube amp. You'll end the review with a statement along the lines of "I could live with these, if I didn't already have XXXXX speakers."
No measurements required. Voila!