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20-39PC+ Setup

Discussion in 'Speakers' started by Chris Huber, May 23, 2005.

  1. Chris Huber

    Chris Huber Well-Known Member

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    I have the Pioneer 811S amp that has 100 or 150 x-over settings. The PC+ has 40-120hz selection and enable/disable x-over.

    What is "Disable" on the sub x-over for?

    Also, if I enable it, what settings on the reciever and sub x-overs would be best?
     
  2. al lout

    al lout Well-Known Member

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    Most ppl would disable the sub x-over to use the x-over on receiver instead. Try 80hz (don't know if your receiver can set diff x-overs) at a starting point for x-over, the point is to achieve the flatest curve as possible or whichever it sounds good to you.
     
  3. Chris Huber

    Chris Huber Well-Known Member

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    My reciever only has a 100 or 150 hz setting. So, seeing as the SVS has a range of 40-120hz, which setting should I use?

    100hz, so there is no gap? I don't think I am getting it...
     
  4. MikeyWeitz

    MikeyWeitz Well-Known Member

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    I would set it @ 100, then use the on board sub X-over and set it somewhere near 60-80hz.
    Depending on your mains, 100Hz will be too high. I know, I use to have the 811 myself.
     
  5. Chris Huber

    Chris Huber Well-Known Member

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    My mains for big JBL S312IIs and S Center II.
     
  6. MikeyWeitz

    MikeyWeitz Well-Known Member

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    Try it around 60hz on the sub and see how it sounds.

    If it is within your means, I highly suggest stepping up to a 1014 or 1015. WORLDS of difference between them and the 811.
     
  7. Chris Huber

    Chris Huber Well-Known Member

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    Besides the PLIIx, what is the diff between the 811 and 1015TX?
     
  8. MikeyWeitz

    MikeyWeitz Well-Known Member

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    811 is decent receiver, but the 101x series is def a step up. Amplifier as well as processing wise. I really like the MCCAC (auto calibration system as well).

    1014 is a much better receiver.

    811 is decent, but if you have something as nice as an SVS, then the 101x is more in that class.

    Oh yeah, has many more options for xOVER SETTINGS at least down to 50z or so)
     
  9. Andy_Steb

    Andy_Steb Well-Known Member

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    If you set the crossover on the Pioneer to 100 and set the crossover on the SVS to 60, you will loose all the frequencies between 60-100 Hz.

    I would try setting all speakers to small, set the Pioneer crossover to 100 Hz and disable the crossover on the SVS.
     
  10. MikeyWeitz

    MikeyWeitz Well-Known Member

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    No you do not. Xovers don't just brick wall the frequencies, their is a roll off too them.
     
  11. Andy_Steb

    Andy_Steb Well-Known Member

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    You are correct, crossovers aren’t brick walls. Roll off is often revered to as Slope, expressed in terms such as “12dB/Octave”

    What I should have said is “You will have significant frequency loss between 60-100 Hz”

    Your mains are rated for 35 Hz (-3dB). Ideally you would set you receiver’s crossover one octave higher. Seeing how your Pioneer’s crossover only goes down to 100 Hz, setting the subwoofer’s crossover to 60 Hz will not compensate, it will in fact create a hole.

    However If I mapped the frequency response of my system and I found that I had a huge peak at 80 Hz and I didn’t have a parametric equalizer, then I might try the cascading crossover technique. Otherwise I would just leave the subs crossover disabled.
     
  12. Ilkka R

    Ilkka R Well-Known Member

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    I would set all speakers small, xo to 100Hz on the receiver and to 80Hz on the PC+. Now there is only a little dip, but your subwoofer isn't (that) locatable. Plotting your FR would help a lot!
     
  13. Chris Huber

    Chris Huber Well-Known Member

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    So, If I play the avia speaker bass wave: The bass starts in the Front speaker and goes down to the subwoofer... During this bass wave, the SPL meter should read the same presssure, correct? If it's higher in a certain frequency, that is a bass peak, correct? How are those corrected?
     

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