Home Theater virgin

Discussion in 'Beginners, General Questions' started by csh, Nov 13, 2013.

  1. csh

    csh Stunt Coordinator

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    The primus is 93db and goes upto 200W
    Pioneer is rated 97db and goes upto 130W

    Difference is 6db. So does this mean that if both are powered by the same AMP at 90W the Primus will sound 4 times as loud as the Pioneer?
     
  2. schan1269

    schan1269 HTF Expert
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    The Pio is not 97.Thought it was 86.But yes...the Pio AJ needs a more power.
     
  3. csh

    csh Stunt Coordinator

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    Soory i mean Pioneer is 87 so there is a 6db difference.
    So will the primus really sound 6 times louder at the same power input level?
     
  4. schan1269

    schan1269 HTF Expert
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    We actually like to phrase it more as the Pio will require 4 times more power. Remember 3db is twice.
     
  5. csh

    csh Stunt Coordinator

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    ok understand... will stick to primus as the basement is large...
     
  6. csh

    csh Stunt Coordinator

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  7. schan1269

    schan1269 HTF Expert
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    Onkyo and Yamaha(rx-v6xx and up)/rx-a won't have a problem.
     
  8. csh

    csh Stunt Coordinator

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    That's fine but aren't these as loud as the pioneer because of the low impedance and resulting lower sensetivity
     
  9. schan1269

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    What Audioholics is leaving out(cause it is a steep learning curve)...

    Ohm load is not a constant. I wish all speaker manufactures would move to sensitivity at 2.83 volts(cause then, ohm load doesn't matter...provided voltage is all you care about. Then the wattage consumed is the other side of the equation of volt/ohm).

    Since a speakers frequency response and ohm load never "mesh"...your point about "reality being 87db if this were an actual 8ohm speaker"(as Audioholics "correctly" says) is a completely bogus assumption.
     
  10. csh

    csh Stunt Coordinator

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    So whats the real sensitivity?
     
  11. csh

    csh Stunt Coordinator

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    I am confused you are saying aydioholics is correct and then saying bogus assumption
     
  12. schan1269

    schan1269 HTF Expert
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    Feed it a 2.83 volt signal and tell us.

    By the way, the Pio AJ is a 6 ohm rated speaker...not 8.
     
  13. schan1269

    schan1269 HTF Expert
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    Audioholics isn't running 100 watts into the speaker. Not all amps double power at 4 ohm.

    So...if you have an amp capable of 100 watts at 8ohm, and 130 at 4 ohm...then the difference of 92 at 8 ohm or 89 at 4 ohm is a moot point.

    If you were hooking this speaker up to an amp that could actually deliver 100 at 8 and 200 at 4...then it matters.

    Are you buying an amp capable of that?
    No.
     
  14. csh

    csh Stunt Coordinator

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    Now am totally cobfused (not your fault but mine)I am looking at either the 717 or 727 amp
     
  15. schan1269

    schan1269 HTF Expert
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  16. csh

    csh Stunt Coordinator

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    So with the 727 will there be a difference in loudness between the pioneer and primusHow much difference
     
  17. schan1269

    schan1269 HTF Expert
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    Also, if you notice it chews 6.9 amps. 6.9 x 120 = 828

    subtract out the 80 the video uses...748.

    divide that by 2(amp loss)...374.

    374 /5 is 55 per channel.
     
  18. csh

    csh Stunt Coordinator

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    Can you recommend a more powerful amp in the same price rangeI owe you a gift card after this is over :)
     
  19. schan1269

    schan1269 HTF Expert
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    You have 55 watts per channel be it 1 ohm or 16. The AVR itself provides a voltage which your speakers reply with an ohm load to come up with watts.

    The "watts" (which results in how fast out of the AVR the voltage flows...hence the faster it flows, lower ohm, the more power is drawn off the provided voltage) is 55 regardless.
     
  20. schan1269

    schan1269 HTF Expert
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    Onkyo's at every price pull more power than everyone else. Yamaha does not list it.

    Pioneer/Elite use class D which is 70% efficient, instead of the presumed 50% of everyone else.

    But yeah, how much power an AVR sucks off the wall is about the only indicator of real power. Obviously a low end Sony that says 100x7 and pulls 300 watts off the wall...the math doesn't add up.
     

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