Tweakers' Asylum

Brass is the (costly) way to go.

69.156.196.162

cheap-Jack

In Reply to: RE: Brass as a power conditioner housing posted by Aurum on June 11, 2007 at 00:02:58

Hi.

I have seen some audiophile grade power strips & powerline conductors installed in housing built with thick shiny brass plates, asking for big bucks.

Quite a few willing audiophiles find such brass plate housings improve the sound vs steel or plastic enclosures. Believe it or not?

From RFI/EMI shielding aspects, thicker the shielding enclosure will get better absorption loss to more I^2R loss inside the shield material. Brass, being a largely copper+ less zinc alloy, is more conductive than steel which is perromagnetic. It offers much better reflection loss to
high frequency noises (beyond 10MHz).

It worths giving it a try if your local brass plate supplies won't charge you too much.

c-J

PS: many musical instruments are made in brass, right?

Follow Ups:

Is brass better than bronze? - Christopher Witmer 13:53:55 06/11/07 (2)
As long as someone is spending big buck$, isn't bronze to be preferred to brass?
- Yes, brass is preferred. - cheap-Jack 09:36:47 06/12/07 (1)
  Hi.
  
  Layman term for brass is yellow copper, & bronze is green copper.
  Both are copper alloys. Brass, also called 'commercial bronze', is commonly made up of 90% copper & 10% zinc. Bronze is typically made up of 88% copper & 12% tin.
  
  My audiophile friends use power strips or power conditioners built with thick brass plates only, not bronze.
  
  It is not a matter of cost more or less, they find brass plated power strips or powerline conditioners sound better.
  
  c-J
  - RE: Yes, brass is preferred. - unclestu52 00:58:30 06/18/07 (0)
    one reason why brass, bronze or copper sounds better is that they are conductive metals and will pass any eddy currents through them much quicker than steel which has a much higher electrical resistance. In addition they are non magnetic so there will be less magnetic induction.
    
    Stu

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