[LAU] On the fly bass downmixing to mono (mpd or alsa)?

[Matt Garman]

On Mon, Feb 10, 2014 at 10:11 AM, Fons Adriaensen <fons at linuxaudio.org> wrote:
> On Mon, Feb 10, 2014 at 09:59:01AM -0600, Matt Garman wrote:
>
>> The existing three pairs of speakers are the in-ceiling speakers I've been
>> talking about.  The fourth pair of speakers will be traditional
>> full-range speakers.  That's one reason why I want to send the
>> full-range signal to the power amp (and in turn the speaker selector).
>
> If these in-ceiling speakers are small ones (that really need a sub)
> they won't appreciate high level LF signals they can't reproduce.
> In the best case this will result in distortion, in the worst you
> could easily damage them.

I'll have to pull one to check and see what they are exactly.  I
received no documentation.

I'm currently sending a full range signal to them and I don't hear any
obvious distortion.  I guess I've always assumed they had a built-in
passive crossover network to filter out frequencies the driver can't
handle.  They definitely don't reproduce low-level signals, though, as
there's definitely missing sound without the sub.

-Matt