Tweaker's Asylum

• Re: Stack 1541 in my DAC !!! - PW 10:09:17 08/22/01 (3)
  In Reply to: Stack 1541 in my DAC !!! posted by ATam on August 20, 2001 at 00:37:47:

  Did you CD player sound louder after the stacking?
  
  

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  • Re: Stack 1541 in my DAC !!! - ATam 20:10:54 08/22/01 (2)
    In Reply to: Re: Stack 1541 in my DAC !!! posted by PW on August 22, 2001 at 10:09:17:

    Yes, it does but It also give you more punch, Sound is more forward ...etc but unfortunely, I got this noise problem.

    
    
    

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    • Re: Stack 1541 in my DAC !!! - Ryan 07:30:05 08/23/01 (1)
      In Reply to: Re: Stack 1541 in my DAC !!! posted by ATam on August 22, 2001 at 20:10:54:

      So no sign of a cure for your noise problem yet? What value of R are you using for passive IV conversion? If it is 100 ohms, you shoudl probably half it or use even less than 50 ohms.

      How does teh paralleled DAC sound and did you simplybsolder teh one on top of teh other.

      Also what Power supply are you using? If TL431, I presume you should half teh value of the series resistor since current draw is presumably double.

      Let us know how you progress.
      Ryan
      
      

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      • Re: Stack 1541 in my DAC !!! - ATam 18:58:39 08/24/01 (0)
        In Reply to: Re: Stack 1541 in my DAC !!! posted by Ryan on August 23, 2001 at 07:30:05:

        I was using 50 ohms in the first place. I use LT323 which is a 3 amp 5 v regulators. The piggy back chips do get quite hot. Also the SAA7220 also get hot when using piggy back.

        Since the original DAC is working fine, I do not want to raise the risk by changing too many parts of the DAC.

        (maybe I can try a 30 ohms resistors). Any further suggestions.

        
        
        
        

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• Re: Stack 1541 in my DAC !!! - Lesha 12:10:42 08/20/01 (0)
  In Reply to: Stack 1541 in my DAC !!! posted by ATam on August 20, 2001 at 00:37:47:

  Make sure the I/V stage is not overloaded with double output current and increase the active divider oscillator and bypass capacitors twice. May be it can help. May be it can't and you'll have to use separate capacitors for each chip.

  Bye,
  Lesha
  
  
  

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