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Rosetta 800 phase problem? Digital Converters
Old 24th August 2007
  #1
Here for the gear
 

Rosetta 800 phase problem?

I have Rosetta 800 and ProTools HD2.
Well , in ProTools I have a mono track to record it to another track .
Nothing is between , only Rosetta oup 3 to input 1 ( for example ). 24/48Khz .
The result is obviously the same track , the same volume but out of phase .
I put a Massive Passive in between and the same occurs .
I try another I/O configuration and always it´s the same .
The same for stereo tracks.
Is this normal?
Am I doing something wrong?
Old 24th August 2007
  #2
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Anyone can help me ?
The problem can be solved inverting the polarity , I know , but I´m curious why it can happen .
Can a Sub25pin cable invert the phase?

Thanks .
Old 24th August 2007
  #3
Dan
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You might check the other end of the dsub cable. It could be wired out of phase.
Old 24th August 2007
  #4
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Thanks for your reply.
But i don´t know how to do it.
I´ll try buying another cable but i have just paid 100 € for the one I got and I think it must be ok .
Old 27th August 2007
  #5
Dan
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What's on the other end of the cable?
Old 27th August 2007
  #6
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Quote:
Originally Posted by Dan View Post
You might check the other end of the dsub cable. It could be wired out of phase.

my guess as well.
Old 27th August 2007
  #7
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ALVA Cableware 3 meters is used here .
DSUB 25(connected to Rosetta800 Analog OUT) to 8XLR male(the other end of the cable) to go out directly to the 8XLR female/ DSUB25 cable connected to analog in of Rosetta. So simply. Routed any channel to any channel ,the result is the same track with the phase polarity inverted 180º.
The delay I find in my Rosetta is 62 samples .So I sync the two tracks and I can see perfectly the 2 tracks matched ... except the f****** Phase Polarity .
I have not tried with another cable yet . I´ll ask everyone before i buy another cables.
For me it´s a mistery. Who knows it can be ?
Old 28th August 2007
  #8
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Well , I posted apogee and they told me they use the Tascam pinout for their DSUB cables , so I think my cables ( ALVA CABLEWARE ) use Yamaha pinout or ¨X¨ pinout.
The difference is only in the phase polarity ? I´m a big ignorant.

Why the manufactures not make the same Dsub to 8 XLR cables for all gear ?

Rosetta 800 users , please .... what DSUB cables do you use?

I´ll don´t ask anymore on this post , I promise it .
Thanks.
Old 28th August 2007
  #9
Max
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Quote:
Originally Posted by tukutra View Post
Well , I posted apogee and they told me they use the Tascam pinout for their DSUB cables , so I think my cables ( ALVA CABLEWARE ) use Yamaha pinout or ¨X¨ pinout.
The difference is only in the phase polarity ? I´m a big ignorant.

Why the manufactures not make the same Dsub to 8 XLR cables for all gear ?

Rosetta 800 users , please .... what DSUB cables do you use?

I´ll don´t ask anymore on this post , I promise it .
Thanks.
Tascam pinout is the industry standard DSUB for analog, Yamaha pinout for AES/EBU. This is how Apogee products have been wired from time immemorial.

If you want to make sure your cables will work get the Apogee models: AD-8-IFC and DA-8-IFC for analog; AES-IFC for digital.

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