[LAU] need just one more d/a output... spdif output on RME 9652

john gibby johnalan.gibby at gmail.com
Sun May 21 09:39:32 UTC 2017

Well maybe I sent that last email too soon; maybe I am figuring this out by
myself; I did move the optical cable from adat1 port to adat2 port,  and
reconfigured to send my crossover channels to hdsp channels 9 thru 16
instead of 1 thru 8, and that is working; can hear my piano.  And I see
output on hdspmixer chanels 1 & 2, to which I sent the R/L rear movie
channels.  Next I'll hook up an optical cable from the rme 9652 adat1 port
to an spdif d/a device and see if my L/R rear channels are there...  It's
still not clear to me, to which of the 26 hdsp channels I see in Jack, that
I need to connect the R/L rear, for that to go out on spdif on adat1.
Guess I'll hook up headphones to the spdif d/a device, and play around with
it until I hear something...

On Sun, May 21, 2017 at 4:45 AM, john gibby <johnalan.gibby at gmail.com>

> 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 at stackingdwarves.net> 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
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
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