New subject: need just one more d/a output... spdif output on RME 9652

21 May 2017

I realized that my RME 9652 has 2 channels of output via spdif, which can
be configured to go out on the ADAT1 optical interface!  This seems like a
much better solution than using 2 sound cards, as long as I only need a
couple more channels of output.  But I'm having trouble understanding how
to make this work.  I ran hdspconf and checked the box for "SPDIF out" on
ADAT1.  But which channels do I use, like in Jack?  I see 26 system outputs
in Jack Connections.  Two of those must be the spdif outs; is it 25 and
26?  Do I disconnect my optical cable from the RME 9652 adat1 port, the one
that currently goes to my adat d/a box, connect it to the adat2 port
instead, and then connect the RME 9652 adat1 port to my spdif d/a device?

Sorry for being so clueless...

Note also that I did find a way, more than one way I think, to use 2
separate sound cards.  I can configure Jack to use a "dummy" sound card,
and In Ecasound can write directly to the different hardware devices.
Seems to work fine, though awfully non-standard.  Or I can use an alsa
application that makes the 2 sound cards look like one alsa device.  But,
until/unless I need more channels, I would much prefer to use the spdif on
the rme 9652.
Thanks very much for helping,
John

On Thu, May 18, 2017 at 3:48 PM, Jörn Nettingsmeier <
nettings(a)stackingdwarves.net&gt; wrote:

...
  On 05/17/2017 08:06 PM, john gibby wrote:

  Hi,
 Just a little question - I have an RME9652 connected to a Tango24 to give
 me 8 d/a outputs via ADAT; but I really need 9 outputs.  I only really need
 ONE input, for testing/crossover design.  The 9 outputs I need are:  front
 L/R low/mid/high, center, L/R surround.

 Hmm. You mean you want active three-way on left and right, but run the
 center fullrange? Nothing against passive designs, but I don't think it's
 wise to have a vastly different design for the center (since the rest of
 your mail sounds like you're after high quality and detailed control). So
 maybe upgrade to 16 ADAT outs anyway, to ease the pain of missing just one
 extra out? ;)

 I understand you are not going to connect the speakers via ADAT (and if
 you are, you might want to reconsider...), but there's gonna be a DA box in
 between, right?

 You could abuse the analog outs, or use the SPDIF out pair for the
 surrounds... if you need sample accuracy in the lab, it might be wise to
 measure as the output latency between ADAT and SPDIF/Analog might differ,
 but in practical use it will be negligible.

 So I'm wondering the nicest way to do get my 9 ADAT outputs.  Maybe I
  should just look for a good deal on another
Tango24... or, get a Behringer
 8000 d/a for less money, and use it for the L/R surround channels.

 If you go the Behringer way, get the new one (8200 I believe), they fixed
 the power supply, so the thing is less likely to die on you in a bad
 moment...

   Both those options give me 8 more inputs that I don't really

  need right now...  Is there something reasonable
I might buy (and sell my
 Tango24), that has ADAT, with from 10 to 16 outputs and 8 or less inputs?

 With these simple options like the ADA 8200, you really can't save much by
 leaving out the inputs. If you want to go up a notch, there's the DirectOut
 Andiamo 2 DA (no inputs), but I guess that thing is around 2k euros, and it
 only takes MADI input. And then there's the Ferrofish boxes, quite
 full-featured with ADAT and MADI I/O in addition to all the analog lines.

 --
 Jörn Nettingsmeier
 De Rijpgracht 8, 1055VR Amsterdam, Nederland
 Tel. +49 177 7937487

 Meister für Veranstaltungstechnik (Bühne/Studio), Tonmeister VDT
 http://stackingdwarves.net
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Re: [LAU] need just one more d/a output... spdif output on RME 9652