tricky question about duplex digital I/O

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I have a tricky question about using the digital I/O of a Kurzweil k2500 with Cubase through a digital audio card, such as the Event Gina.

What I would like to do is to have an entirely digital signal path between the K2500 and Cubase.

Has anyone done anything like this?

1. Can you record the digital output from the KDFX unit directly into Cubase via the Gina S/PDIF port?

2. Can you pass the digital output from Cubase, via the Gina S/PDIF port, into the digital port of the K2500 sampling option?

[These two seem obvious -- perhaps too obvious to document on their website! I want to have confirmation before I spend several thousand dollars on this setup.]

3. (The tricky one) Is is possible to route audio out of the Gina S/PDIF port, into the digital input on the sampling option, through the K2500 via Live Mode, through KDFX, out the KDFX digital out, and back into the Cubase via the Gina S/PDIF port? (I can't tell if there are separate physical ports for the digital ins and outs on the Gina....)

Here's a diagram to show what I mean: +----------------------+ | Cubase VST | +----------------------+ | ^ | | V | +----------------------+ | S/PDIF S/PDIF | | out [Gina] in | +----------------------+ | ^ | | V | +----------------------+ | Sampling KDFX | | Option S/PDIF | | S/PDIF out | | in | | | | [K2500] | +----------------------+

This configuration uses the K2500 as a fully-digital effects unit.

Is this possible, or I am misunderstanding the way the S/PDIF works?

-- Gregory Michael Travis (mito@panix.com), March 16, 1999

Answers

Gregory, I'll try and answer each of your questions. <<1. Can you record the digital output from the KDFX unit directly into Cubase via the Gina S/PDIF port? >> Yes, the digital out on the K2500, functions just like the Stereo Mix Out, its just a digital signal. So yes, you can record digitally from your K2500 into the Gina.

<<2. Can you pass the digital output from Cubase, via the Gina S/PDIF port, into the digital port of the K2500 sampling option? >> Yes, you could re-sample something from the computer or use Live Mode.

<<3. (The tricky one) Is is possible to route audio out of the Gina S/PDIF port, into the digital input on the sampling option, through the K2500 via Live Mode, through KDFX, out the KDFX digital out, and back into the Cubase via the Gina S/PDIF port? (I can't tell if there are separate physical ports for the digital ins and outs on the Gina....) >> Yes all of the tracking running on the Gina would come out the digital out. There are no seperate outs. You could run the signal out of the GINA through KDFX, then back to GINA digitally. The only factor is whether or not your computer can has the speed to do this.

Have fun, Mike

Keep in mind, this forum will be closing shortly. A new forum has opened which is much more elegant than this one. Please follow the link from the K2500 Zone, links section. (you may have to refresh your browswer)

-- Mike Martin (K25zone@aol.com), March 16, 1999.


> <<1. Can you record the digital output from the > KDFX unit directly into Cubase via the Gina > S/PDIF port? >> > > Yes, the digital out on the K2500, functions > just like the Stereo Mix Out, its just a digital > signal. So yes, you can record digitally from > your K2500 into the Gina.

And this is an entirely digital signal path? The Digitech chip, and the K2500's D/A and A/D converters are not used at all?

> <<3. (The tricky one) Is is possible to route > audio out of the Gina S/PDIF port, into the > digital input on the sampling option, through > the K2500 via Live Mode, through KDFX, out the > KDFX digital out, and back into the Cubase via > the Gina S/PDIF port? (I can't tell if there are > separate physical ports for the digital ins and > outs on the Gina....) >> > > Yes all of the tracking running on the Gina > would come out the digital out. There are no > seperate outs. You could run the signal out of > the GINA through KDFX, then back to GINA > digitally. The only factor is whether or not > your computer can has the speed to do this.

From this answer, I gather that the Gina has two digital jacks -- one for input and one for output; and these are each stereo. Is this correct?

-- Greg Travis (mito@panix.com), March 16, 1999.


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