On 10/16/2015 11:37 PM, Augustine Leudar wrote:
I've been using them for four years and not experienced those problems
(apart from original a da 8000's PSU problems) . The four adat set to slave
are controlled by the raydat master clock no need for Wordclock.
Agreed, this particular setup works well in my experience, too.
The problem with ADAT for pro environments is that you cannot do
distance and you cannot have patchbays (well, you can try with Toslink
connectors, but it's very unreliable).
In fact
many people seem to regard external master clocks as snake oil. Im not
going there.
If you have really crappy clocks, an external master helps. But if you
have any RME equipment, you already have a very good word clock
generator, no need to pay for an extra one.
What I'm saying is that some implementations of ADAT are notoriously bad
at locking and syncing (Yamaha desks come to mind - I've had to
wordclock them time and again because they were unable to sync to ADAT
reliably). So I would prefer having wordclock sync everywhere, which in
the case of the ADA8200s requires an extra wordclock splitter since they
don't have WC outs.
Cable length is not a problem as I have computer and adats in
the same rack so cable length is not an issue.
Well, if you can wire the ADAT once, inside a single rack, and never
touch it again, you're probably fine.
As for signal to noise ratio well I've seen
this discussed quite a lot with pre amps but rarely these days with dacs.
Thd and "noise " is well below audible levels in both units - I can point
you to measurements of ada800 if your interested certainly it held its own
against more expensive units.
It's true that the ADA8k is good enough for most applications, but the
extra price of a better converter does get you another 10-15dB less
THD+N, plus the THD at least in the old 8000s was quite nasty. I've just
replaced an 8000 with an Andiamo in my mixing environment, and the
difference is quite audible there. Probably not in your average live
venue, though.
Haven't had the chance to hear the new 8200s yet, from what I heard
they're a lot better.
The one place I do concede is the cables are
a pain but if you set it up right and dont move it there shouldn't be any
problems . My rig is mobile do the cables are annoying but not 2 thousand
pounds worth of annoying. I guess this is why large multichannel
installations such as the wfs systems at Salford university or game of
life because the extra cost of madi is not worth the gain in performance
(which audibly is none). Still i like the idea of one box out of curiosity
does the Andiamo supply balanced outs ?
Of course. Due to space restrictions (it's 32 AD/DA in one rack unit),
the balanced ins and outs are D-SUB-25. A bit of extra hassle - I made
my own breakouts for it. You can get them from RME or Directout, but
they are quite expensive.
But since I'm also using it in the studio, the D-SUBs actually quicker
to connect than individual XLRs.
And the new firmware comes with a complete matrix router that spans all
analog and MADI ins and outs. Quite handy, and you can run it
MIDI-over-MADI, so you don't need an extra cable there.
--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT
http://stackingdwarves.net
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