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Speaker/Radio frequency

Discussion in 'Hardware' started by bubbakey19, Feb 2, 2003.

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  1. bubbakey19

    bubbakey19 Thread Starter

    Feb 2, 2003
    I have these amplified desktop speakers which pick up radio frequencies, i
    bought a ferrite clamp from radio shck and it did not help much, does anyone
    have any suggestions to what i can do...i know this may be th wrong spot to post this, sory.
  2. LHE


    Sep 6, 2001
    The RFI can be enter through 3 routes:

    1. The speaker leads between speaker units

    2. The power supply leads

    3. direct radiation.

    You will need to try a ferrite device on both speakers if there is amplifiers in each unit. Also on the AC line to the the speaker that has the power supply.

    If you have wall transformer/power supply, these are particularly susceptible to RFI on the DC lead that goes to the speakers.

    99% of the time you should be able to cure the problem with outboard ferrites. Typically you need 6-10 turns on each ferrite.

    Note it MUST be a ferrite core not a toroid.

    Good Luck.
  3. JohnWill

    JohnWill Retired Moderator

    Oct 19, 2002
    And the #1 reason for the problem is poor grounding. Check the grounding of your power to the machine.
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