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Audiophile cappacitor replacement comments

Discussion in 'Electronic Repair' started by tomh, Feb 6, 2007.

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  1. tomh

    tomh Guest

    ahhh, just to put my oar in.
    While I don't believe all the high end audio snake oil claims about
    this or that brand of capacitor. Going through a good quality amp and
    replacing the coupling/filter caps with polypropylene polystyrene types
    can make a subtle but audible difference even to the non "golden eared"
    set.
    Yes it's a lot of work and finding all the right values can be
    difficult and expensive. And the plastic film types tend to be 2-3 times
    larger, which can be a problem.
    Is it worth it? good question. If it ain't broke... If your amp is 20+
    years old just doing a general replacement with new capacitors, fancy
    one's or not, will probably make a world of difference. Also if the rest
    of your system is not "up to snuff", the difference might not be
    noticeable.
    As a first experiment try replacing the capacitors in your speaker
    crossover. There size is usually not a problem and you can gang 'em up
    if needed to get the right value. If that makes a discernible difference
    to you then consider pressing on.

    good luck and have fun, tomh
     
  2. GregS

    GregS Guest

    If you know how to work speakers, then you might be able to change
    caps. I assume your talking about replacing electrolytics with p-p
    types. The ESR will change and you cannot use the same values
    of capacitance. Of course, the tolerance of the lytics is pretty bad.

    Replacing electrolytics in amplifier coupling stages is a good idea
    just for stability, and frequency and phase response can make drastic
    changes with old lytics.

    Amps don't have to be 20 years old to have problems.

    greg
     
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