posted 12 July 2009 14:27            

Even taking the pacarana out of the picture and trying to get this setup to work with TC drivers and control panel installed, I cannot get these guys to talk 96K.

A few things to NOTE:

1. Konnekt 24D wants to be master clock, it will not sync to MOTUs clock at any sample rate. MOTU will sync to Konnekt 24D at 48k and below. If frustrates me that Konnekt needs to be master cause I don't want it to be.

2. 96K will not sync period between them. I've also tried optical SPDIF and ADAT, nothing works. The only way to get 96K is for them to both use internal clocks and then of course everything goes wonky and dropped audio.

So to recap, the only stable setup I can use with digital connections between Konnekt 24D and MOTU 828 mk3 is 48K SPDIF coax + (ADAT or SPDIF) optical where the Konnekt 24D is master clock. This is stable.

If anyone knows a way to get 96K working I'd love to know it cause I prefer to work at 96K.

On the good side...the 48k setup I have is very stable now.

[This message has been edited by bar|none (edited 12 July 2009).]

posted 12 July 2009 16:44            

For the test, the Motu was standalone (no FireWire connection), using the internal mixer to route microphone input 1 to S/PDIF output, set to internal clock, 98 khz sample rate. The TC was connected to the FireWire bus and was the Pacarana audio I/O. The S/PDIF inputs and outputs of the two devices were connected to one another.

In Kyma, selected the TC as the MIDI and audio input/output devices, selected S/PDIF as the clock source and 96000 as the sample rate. Went into Configure popup menu, selected Route inputs and selected Coaxial L and R as Kyma audio inputs 1 and 2.

Played the Input Channel 1 Sound from the Prototypes as the test sound and verified that the input to the microphone was getting to Kyma and the clock was definitely locked.

posted 12 July 2009 17:38            

1. TCNear control panel shows flashing alternating "LOCK" and "SLIP" light when receiving sync from the MOTU. I confirmed with Both the Ultralite mk3 AND the 828 mk3 no matter what the sample rate, although audio seems happy. Are they just being finnicky?

2. Firewire issue on the mac. Konnekt 24D was chained off the 828 second firewire port. Worked fine at 48k but firewire reset hangs with 96k.

So basically what I'm learning here is these interfaces are very finnicky about where they are on the firewire bus. I think I'm going to buy a high quality firewire expansion card. Because I'm out of the stock ports on the MacPRO and using external busses are causing issues.

All seems good now and I have what I want which is MOTU as master and 4 channels 96k digital to/from pacarana.

posted 12 July 2009 18:29            

These guys do a lot of performance testing and the interesting part is here.

"Apple continues to produce Macs with FireWire 800 ports, but they always share the same single data channel/controller with the FireWire 400 and USB 2.0 ports. Why is that an issue? For one thing, we've experienced some strange slowdowns in FireWire 800 devices when FireWire 400 devices are added to the mix. And they continue to run slowly until you disconnect the FireWire 400 device and Restart the Mac Pro. "

posted 13 July 2009 20:09            

I love this thing!
http://experimentsinanalogchaos.com/audio/Pacarain.m4a

posted 14 July 2009 08:35            

quote:

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sound is being created at all times

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posted 16 July 2009 20:55            

I actually had a pretty stable system going with it all on the MacPro direct so I'll likely keep that setup and if I need more FW400 ports get a dedicated card for those.

posted 17 July 2009 19:20            

I actually just got both the Tango Express 800 for FW 800 AND the Tango Express for FW 400. Kyma will not recognize the pacarana connected to Tango Express 800 nor will it recognize the TC Konnekt 24D connected to either. So it seems Kyma can only work properly connected to the stock FW ports on the MacPRO. This is got to be a limitation of Kyma. Is it not navigating the FW device tree properly? Konnekt 24D works on third party ports with it's own drivers.

Anyway..this is workable for me now that I have other ports available for other devices but seems that a lot of users will have support problems here. So reporting it here as a bug.

[edit] removed system profile info from post