10 Feb
2014
10 Feb
'14
6:28 p.m.
On Mon, Feb 10, 2014 at 10:52 AM, Joe Hartley <jh(a)brainiac.com> wrote:
This becomes a matter of a simple Y-adapter to combine
the two outputs
into one. Don't worry at all about filtering out the signals at the
server end, the subwoofer will have a low-pass filter that will cut out
anything above a certain frequency anyway. On some, the frequency of
the low-pass filter is adjustable.
I'm not sure this is right. Based on what I was able to glean from
searching the web, there are a couple issues with this:
(1) Depending on how the DAC outputs are wired, using a Y-adapter
on one set of stereo outputs might also cause the other set of stereo
outputs to be mono as well.
(2) At least a basic resistor network (one has already been
described in this thread) is needed to "correctly" sum the two
channels. Now I can't find the link that gave an explanation of why
this is, but my takeaway was that a simple Y-adapter isn't the way to
go.