Hi James, I was just reading through the SP3 owners manual (not that I am one, but it is good to dream..). I use a Logitech RF extender with my present pre/pro and have it wired using the a standard 3.5mm stereo phone jack cable. so, is the 3mm mentioned in the manual (snip below) a typo and should really be the standard 3.5mm, or is 3mm another US centric standard? I had a quick google and nothing seem to pop up.
AUXILIARY INFRA-RED INPUT
A 3mm two conductor phone jack which will accept
a hardwired DC voltage that is the electrical equivalent
of the optical signal generated by an infrared
emitter in a remote control. This will primarily used
as by infra-red remote control extenders. The tip
is positive, the sleeve is negative and the signal level
should be 5vdc max. (Positive or “1”) and 0v or
ground (negative or “0”)
It would be really important to me that the Logitech RF extender worked with the SP3.
Cheers