My thoughts on this, given that it will have been defined by engineers and tweaked by product management and marketing/advertising.
The original products were 80 and 40 ... One being twice the other.
In the electronics and communications industry when fitting something between two points it is quite normal to use a ratio rather than the mid point. In the case of two items being separated by a factor of two, the intermediate will often be the square root of 2 (1.414) times the lower. And thus 1.414 time the intermediate will give the upper.
So, 40 x 1.414 = 56.6 and 56.6 x 1.414 = 80
Put the product management spin onto 56.56 and they would say 55 looks to be a nicer number.
The marketing/advertising side has taken the 80 down to 76 to allow for the difference in sync and download speed, - a difference of 4 and similar with 40 being marketed at 38, two lower. It ten follows that a 55 product would need to be around 2.5 lower and thus the figure of 52.
M H C
taurus excreta cerebrum vincit
Edited by MHC (Sat 16-Apr-16 13:11:50)