Need help to understand about dbs

Discussion in 'Hi-Fi and General Audio' started by Ian121, Jul 31, 2024.

  1. Ian121

    Ian121

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    Hi I'm new to the fourm my question is I have a cyrus i9-xr amp and when I turn my amps volume up it counts in -db's, when the volume gets louder it's counts down in -dbs can someone explain to me thanks .
     
    Ian121, Jul 31, 2024
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  2. Ian121

    Sergeauckland

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    Full volume is 0dB. As a volume control is an attenuator, the degree of attenuation is shown as minus so many dBs. -3dB is half power, -6dB is 1/4 power, or in voltage terms, -3dB is 0.707x, -6dB is 0.5x

    -10dB is approximately 1/3 voltage or 1/10th the power
    -20dB is 1/10th the voltage or 1/100th the power

    And so on.

    S
     
    Sergeauckland, Jul 31, 2024
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    Ian121 likes this.
  3. Ian121

    Ian121

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    Thank you for your help I was thinking that 0 db was max thanks again
     
    Ian121, Jul 31, 2024
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    Sergeauckland likes this.
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