On Sat, 18 Feb 2012 11:27:01 -0000, "David WE Roberts"
wrote:

I do wonder in passing why the system doesn't support the 6 ohm speakers
which come with it as surround sound speakers, but hey - no big problem.

16ohms in the rears were a common thing - afaics it's just a cheap way
of ramping down the output of the surrounds without any more circuitry
- down to a price, as you say.