Bad math in HS1 video

[Modred189]

In the HS1 give away thread go to the HS1 video @ 2:45.
They try to say that the 50mm driver has 56% more area than the 40mm driver. here's the math they gave:

50mm/40mm = 1.56
lols.

Corsair, it should read
40mm/50mm= .8, or a 20% increase in driver size.

Now that's not exactly correct either, especially if you want it to look good. What they should have done is go by AREA (as I assume 40 and 50mm are the diameter.

the 40mm driver have an area of 1256mm^2
the 50mm drivers have an area of 1962.5mm^2

the difference there (1256/1962.5)=.64, or a 36% increase in driver size.


Boo, Corsair, check your math!!!

 

[Modred189]

Going back and rewatching the video, they write that 40/50mm are the are, but the first half of the above still holds.

 

[Starslayer67]

No, the way they did their math is correct. Using linear size, what they should have gotten is that 50mm/40mm = 5/4 = 1.25, a 25% increase [(50-40)/40 = .25]. In terms of area, this becomes 1962.5mm^2/1256mm^2 = 1.56, or exactly what they claimed [(2500-1600)/1600 = 9/16 = .56; the pis cancel out].

For future reference:

The percent increase/decrease in some quantity is given by [(New value) - (old value)]/(old value) * 100.

 

[Modred189]

Ah true, but as my second post said, they list the 50 and 40 as mm^2, area, so it's still only a 25% increase.
There's a reason I'm in law school, lol.

 

[Starslayer67]

I'll chalk that up to writing it down wrong, because there's no way those drivers are a mere half-inch across.

 

[Neb]

It's not bad math, it's bad writing