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Audio Resistance

Discussion in 'Troubleshooting and Repair' started by KRe8ive, Oct 6, 2012.

  1. KRe8ive

    KRe8ive

    14
    0
    May 26, 2012
    I have an audio device which the amplifier on it broke. The amplifier had a 100kohm input.

    The part I want to replace it with only has a 10kohm input. Is it as simple as just adding a resistor across the connection to make it appear as 100kohm or do i have to do more?

    Cheers
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,174
    2,689
    Jan 21, 2010
    Well... You may just be able to use the new amplifier, or it may affect how the volume control works.

    If it's a stereo amplifier and you're replacing one channel, any differences may be very annoying (you'll hear them).

    Another option is a single stage transistor amplifier to buffer the signal.

    However, the information you've provided is so limited that I can't give you any more than possible solutions.
     
  3. KRe8ive

    KRe8ive

    14
    0
    May 26, 2012
    unfortunately the information i have is limited. THe amp I pulled out is a 4ch amp, and all i know is the input impedence is 100kohm. Am hoping to connect it to 2x 2ch amps
     
  4. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    648
    May 8, 2012
    No, it's not that simple. Have you considered repairing the original amp? Do you have a schematic for the new one so we can determine if the input Z can be easily increased to 100K?

    In lieu of neither of the above you would need something like this.

    Chris
     

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