1 (edited by animix 2020-01-14 05:31:29)

Topic: ADI-8 DD question

This text also posted to the AES/MADI premium forum

Audio interface is MADI FX running at 48k

I have had two  ADI-8 DD interfaces sitting on a shelf.  I'm assuming I can use them to interface Stereo AD/DA converters and also patch them via AES to a Quantec Yardstick, Lexicon PCM 91, Sony DPS V77 and TC M2000 for use as external hardware reverbs on DAW aux busses. Any reason this wouldn't work if I'm only working at 48k?

I recall there being some fundamental difference between the way these work as opposed to the ADI 192 but I really can't identify it other than the 192 is QS capable. For some reason, these old reverbs are patched into the ADI 192 right now but I can't remember why I did that instead of using an ADI-8 DS many years ago.

Also, I have another question related to the ADI-8 DD. My partner has an Alesis Masterlink that does not have a sync input and drops sync when patched to the MADI FX AES I/O or to a stereo AD/DA. The ADI-8 DD literature states the following:

"Both converters work both completely independent and intelligently coupled. The actual states of incoming and outgoing signals and ongoing operations within the unit are displayed with LEDs of different colors in an easily overseeable way. The 8-channel Sample Rate Converter in Hi-End 24 bit/96 kHz quality is only available in the left or right part of the device. It allows for a wide range of applications. When the internal clock is used, the SRC works as a perfect jitter-killer. And thanks to the SRC's clock-decoupling non-synchronizable items like CD-players and DAT recorders can be used together as if they were synchronizable."

So If I wanted to designate a stereo pair of MADI outputs that correlated to a stereo AES output of the ADI-8 DS to the main outputs of the DAW I could sync the Masterlink (in theory) by setting the input source to AES, the clock of the ADI8 DD input to ADAT , engage the SRC, patch the AES output of the Masterlink to the AES input of the ADI-8 DD, then set the source on the right side of the ADI8=Dd unit to ADAT, the output clock of the ADI-8 DD to Internal and run an AES cable from the AES output of the ADI-8 DD to the AES input of the Masterlink? What about the input state on the right side of the unit? I'm assuming PRO, but maybe optical? I'm sort of lost at this point. Am I getting this at all?

I am hoping to get a stable digital 2bus signal into the synced Masterlink for recording and get playback from the Masterlink through it's analogue outputs.

HDSPe MADI-FX, M-32 AD, M-32 DA, ADI-8 QS, ADI 192 DD, ADI 648, Mytek Stereo 96 AD/DA

2

Re: ADI-8 DD question

According to the Alesis ML manual the digital input (AES) can be used as sync source. Then its digital output is also synced to that, so the ML in a AES loop with the HDSPe MADI FX as clock master should easily work. All the rest I did not understand, sorry. Partly it looks to me like you think the ADI-8 DD has MADI?

The ADI-8 DD had the SRC tied to the AES inputs. The ADI-192 allowed to use the SRC with either AES, ADAT or TDIF input. Also the 192 had independent source selection for all three output formats, while the 8 DD had only two, with ADAT and TDIF always having the same source.

Regards
Matthias Carstens
RME

Re: ADI-8 DD question

MC wrote:

According to the Alesis ML manual the digital input (AES) can be used as sync source. Then its digital output is also synced to that, so the ML in a AES loop with the HDSPe MADI FX as clock master should easily work. All the rest I did not understand, sorry. Partly it looks to me like you think the ADI-8 DD has MADI?

The ADI-8 DD had the SRC tied to the AES inputs. The ADI-192 allowed to use the SRC with either AES, ADAT or TDIF input. Also the 192 had independent source selection for all three output formats, while the 8 DD had only two, with ADAT and TDIF always having the same source.

Understand no MADI. I wasn't clear on this. What I am intending to do is to interface it via ADAT to an ADI 648 that is patched to my MADI FX card.

Appreciate the clarification on the -8 DD vs the 192 DD.

That Masterlink AES input may be faulty. Will give it another try.

Regards,

HDSPe MADI-FX, M-32 AD, M-32 DA, ADI-8 QS, ADI 192 DD, ADI 648, Mytek Stereo 96 AD/DA