Tweakers' Asylum

• Hammond 193L choke / PS Audio Noise Harvester? - michaelv20850 06:34:18 03/26/07 (1)
  In Reply to: A cheap parallel filter is the Hammond 193L choke. posted by Al Sekela on March 24, 2007 at 17:33:34:

  I look at PS Audio site and i see Ps audio Noise Harvester. Just wondering if it's similar to Hammond 193L choke?
  
  

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  • Nope, here's a description of the implementation of the Noise Harvester... - Ted Smith 11:43:30 03/26/07 (0)
    In Reply to: Hammond 193L choke / PS Audio Noise Harvester? posted by michaelv20850 on March 26, 2007 at 06:34:18:

    
    

    • http://www.audioasylum.com/audio/tweaks/messages/135441.html   (Open in New Window)

    
    

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• Re: A cheap parallel filter is the Hammond 193L choke. - pboser@yahoo.com 07:08:23 03/25/07 (3)
  In Reply to: A cheap parallel filter is the Hammond 193L choke. posted by Al Sekela on March 24, 2007 at 17:33:34:

  I have a bunch of chokes around - what are the criteria for choosing one for this purpose?
  Thanks,
  Pete
  
  

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  • Enough inductance and a good voltage rating. - Al Sekela 16:07:22 03/28/07 (2)
    In Reply to: Re: A cheap parallel filter is the Hammond 193L choke. posted by pboser@yahoo.com on March 25, 2007 at 07:08:23:

    The Hammond 193L is a 5 Henry inductor, so it will draw about 64 milliamps of reactive current with 120 VAC across it. Some of this will cause heating due to core and resistive losses, but the device should run cool. You may occasionally find one that buzzes due to loose laminations.

    The device will absorb higher-frequency noise and voltage spikes due to the characteristics of the magnetic core. It will not affect dynamics, as it is wired in parallel with the load.

    Be sure the chokes you use have a high voltage rating for the insulation, to withstand surges before the core absorbs them.
    
    

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    • Re: Enough inductance and a good voltage rating. - michaelv20850 11:54:05 03/29/07 (1)
      In Reply to: Enough inductance and a good voltage rating. posted by Al Sekela on March 28, 2007 at 16:07:22:

      
      What is your suggestion to install the choke? Just lay it around or should it be in closed box?

      I've ordered Hammond 193L from partsexpress, but it is out of stock now..:) can't wait to try it out those.

      By the way, the cord with any guage will do? or it must be a large gauge, let say 10 gauge

      
      thanks.
      
      

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      • Depends on the environment. - Al Sekela 14:39:43 03/29/07 (0)
        In Reply to: Re: Enough inductance and a good voltage rating. posted by michaelv20850 on March 29, 2007 at 11:54:05:

        Putting the choke in a protective enclosure makes sense if it will be exposed to traffic, but then you have to make sure the enclosure does not cause problems. Don't use steel or anything that will vibrate.

        The current will be small, but I've found in many similar tweaks that 14-gauge wire gives the best sonic results.
        
        

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• Re: A cheap parallel filter is the Hammond 193L choke. - michaelv20850 18:44:37 03/24/07 (0)
  In Reply to: A cheap parallel filter is the Hammond 193L choke. posted by Al Sekela on March 24, 2007 at 17:33:34:

  Thanks. I will get one and try it out. I hope it does not restrict the current , therefore reduce the dynamic.
  
  

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