Simple amplifier

Discussion in 'Analog & Mixed-Signal Design' started by Avijit Palit, Jul 19, 2017.

  1. Avijit Palit

    Thread Starter Member

    Jul 19, 2017
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    i want to add three more speakers to my 2.1 sound system to make it 5.1. Shoud I use amplifier?
     
  2. crutschow

    Expert

    Mar 14, 2008
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    Besides amplifiers for each speaker, you also need a decoder to generate the 5.1 signals.
    Where are the 2.1 signals coming from?
     
  3. Avijit Palit

    Thread Starter Member

    Jul 19, 2017
    81
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    Plz explain the decoder circuit
     
  4. absf

    Senior Member

    Dec 29, 2010
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    Isn't that the job of "GOOGLE" ?

    Allen
     
  5. KeepItSimpleStupid

    Distinguished Member

    Mar 4, 2014
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    L R

    F R

    4 speakers can still be 2 or 2.1 Typical for a car, but not exactly encoded and it's likely L R + a subwoofer.

    To upconvert from real 2.1 to 5.1 seems to be a bit harder.

    I, myself, would like to upconvert analog L R to AC3-Audio only via HDMI. Google wasn't too helpfull. Kodi came up as a possible platform.
     
  6. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    What is the source of the sound?

    What is the 2.1 setup you have now?
    Sound from pc?
    Sound from audio device like receiver/player?
     
  7. crutschow

    Expert

    Mar 14, 2008
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    5.1 sound is encoded into some digital sound sources, such as Blu Ray movies and some audio CDs.
    T0 get that sound you must have a digital decoder that recovers the sound into the separate 5 analog channels plus subwoofer.

    If all you have is 2.1 analog signals, they can't be converted to 5.1.
     
  8. KeepItSimpleStupid

    Distinguished Member

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  9. crutschow

    Expert

    Mar 14, 2008
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    That discontinued product derives an emulated 5.1 from 2.1 which is not the same as true 5.1.
    But it may be better than just 2.1.
     
  10. ebeowulf17

    Well-Known Member

    Aug 12, 2014
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    "Better" is so subjective. I'll take real stereo over phasey, comb-filtered, emulated 5.1 any day! I'm sure they're not all as bad as ones I've heard, but I'm still skeptical!
     
  11. Avijit Palit

    Thread Starter Member

    Jul 19, 2017
    81
    1
    Sound from PC or Android smartphone
     
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