Posted by russtafarian (A) on March 23, 2007 at 09:03:50

Why can’t I get this transformer to work in this player when I’ve used it successfully in Sony and Pioneer players? The Oppo uses a CS4360 voltage output DAC, however it is single ended and not differential like the other DAC chips I’ve connected the 1527XL to.

No matter how I hooked it up I either get loud buzzing or distorted music with no bass. Can this transformer be used with this DAC and if so, how do I connect it.

I’ve included a link to the DAC data sheet. Thanks for your help.

Russ

• CS4360   (Open in New Window)

• Re: 1527XL and Oppo 970 - vizion@rcrgroup.com 19:04:38 12/03/07 (0)
  In Reply to: 1527XL and Oppo 970 posted by russtafarian on March 23, 2007 at 09:03:50

  I was contemplating on doing the same thing for the Dv981/983. Do the sonics sound better with the CS4360 tied to the transformers with coupling caps ?
  
  
  Eric
  
  

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• Re: 1527XL and Oppo 970 - KevinC 10:06:03 03/23/07 (1)
  In Reply to: 1527XL and Oppo 970 posted by Russtafarian on March 23, 2007 at 09:03:50:

  A cursory look at the datasheet reveals that it is a budget single supply 6 channel DAC with single-ended outputs, so there is DC on the audio output lines. The transformer is therefore saturated when connected directly and the sound is distorted. You can cure the problem by interposing a coupling capacitor between the DAC analog output and the transformer primary. There is no way to use the reversed polarity of the differential connection (because it doesn't have one!) here to cancel the DC in the core like you could with the others. Perhaps it's too blunt to say that this cheap CD player isn't worth the trouble, but that would be what I would have said had you asked. :=))
  
  Kevin Carter
  K&K Audio
  www.kandkaudio.com
  
  

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  • Re: 1527XL and Oppo 970 - Russtafarian 11:16:32 03/23/07 (0)
    In Reply to: Re: 1527XL and Oppo 970 posted by KevinC on March 23, 2007 at 10:06:03:

    Fair enough. That's what I needed to know. I'll drop some coupling caps in and see what happens. Thanks for the help.

    Russ
    
    

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