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  1. #1
    Junior Member
    Join Date
    Jul 2007
    Posts
    19

    5v 6 amp too much current for squeezebox?

    I am going to buy a medical grade smps for my squeezebox since I heard the stock sb wallwart beats the Bolder modified Elpac power supply. This works if a felix power conditioner is used in the power circuit. Here is the link.
    http://www.audiocircle.com/circles/i...8211#msg458211

    I figure if a cheap smps wallwart can beat a good linear supply than a good smps should be able to beat a high class audiophile linear supply.

  2. #2
    Senior Member
    Join Date
    Nov 2005
    Location
    San Francisco, CA
    Posts
    1,864
    As long as the PSU is voltage stable, it should only deliver the required current that the Squeezebox needs. It can only be a problem if the voltage output of the PSU is not stable (5v) at low amp output.

    Shouldn't be a problem.

  3. #3
    If your PSU can deliver substantially more than the original, you should add a fuse for safety. The original PSU will go into current - limiting if there is, for example, a damaged cable or fault in the unit. A beefier supply may just burn its way through the fault, the wiring, your house etc.

    However a SMPS designed to do 6 amps may actually be more noisy if run a long way below its rated load - at some point most supplies will go from a continuous mode to a 'hiccup' or discontinuous mode, which could well produce more audible artifacts and output voltage fluctuation.
    'Medical grade' generally only affects earth leakage, and not the level of noise on the output.

  4. #4
    Senior Member
    Join Date
    Jun 2007
    Posts
    256
    the sb3 will draw the current rather than the psu supply it !
    Acoustician and builder of interesting cables

  5. #5
    Senior Member
    Join Date
    Dec 2005
    Posts
    799
    Hah! "Medical Grade"! Hah! Hah!

    TD

  6. #6
    Junior Member
    Join Date
    Mar 2008
    Posts
    10
    Medical grade powersupplies are great, great filtering, low noise, low rfi/emi emissions and very stable voltages. Unfortunately high prices.

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