• RE: Aah, so you're not using the 3.6's bass panels? ... - shumi 05:03:35 07/13/20 (3)
  In Reply to: RE: Aah, so you're not using the 3.6's bass panels? ... posted by andyr on July 13, 2020 at 01:46:53

  Andyr,
  I pretty much followed this procedure using REW in addition to lots of coaching from emailtim.
  
  https://www.merlijnvanveen.nl/en/study-hall/166-subwoofer-alignment-the-foolproof-relative-absolute-method
  
  

  
  
  

  
  

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  • RE: Aah, so you're not using the 3.6's bass panels? ... - emailtim 12:42:17 07/13/20 (2)
    In Reply to: RE: Aah, so you're not using the 3.6's bass panels? ... posted by shumi on July 13, 2020 at 05:03:35

    @AndyR,
    
    Here is Shumi's zoomed-in overlapping XO region phase plot of the right main(mid+high) and sub using Magnepan's 3.6 stock asymmetric overlapping points/slopes with the additional 90 degree Rythmik amp phase fine tuning.
    
    Frequency Dependent Windowing has been added.
    
    Note the matching slope and phase from [100-400]Hz through out the XO's driver overlap. The gold plot is all 3 drivers measured together.
    
    
    

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    • RE: Aah, so you're not using the 3.6's bass panels? ... - shumi 07:07:52 07/14/20 (1)
      In Reply to: RE: Aah, so you're not using the 3.6's bass panels? ... posted by emailtim on July 13, 2020 at 12:42:17

      Spent most of yesterday into the night evaluating 80,vs 90, vs 100 Hz croosovers with 3.6rs bass panels on, versus 3.6 bass panels off with lp at 250/18 and hp at 200/6.
      I used mostly this reference recording for assessing changes. I know this recording extremely well.
      
      

      
      
      

      
      
      Could not really make out huge differences in bass or other frequencies for 80,90,100 with bass panels on. Bass was ok, but I could barely make out the shakers on the right and the viola and violin did not appear to be separated by much space. Rebecca sounded ok. Piano appeared perfectly centered with the 3.6rs bass panels on. I was not prepared for the significant difference I found when I turned the bass panels off (took the external boxes off) and used the 10 B to bi-amp. Bass was punchier, deeper, and each note appeared well defined with bass being provided solely by the ob/servos subs, shakers came to life on the distant right even noticing that each shake was a bit different than the previous one, piano shifted slightly to the left and violin and viola appeared more separated. Guitar sounded better defined. With this configuration I thought I could even detect a spot in the recording where I thought Rebecca turned her head slightly while singing. I also tried subs on the outside of the speakers but did not gain anything at all in terms of minimizing room modes or anything else.I am done. I shall retain this configuration and not look back. This is what works for me in my room, with my equipment, and listening position.
      

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      • Thanks for the update - emailtim 07:46:06 07/14/20 (0)
        In Reply to: RE: Aah, so you're not using the 3.6's bass panels? ... posted by shumi on July 14, 2020 at 07:07:52

        Thanks for the update.
        
        That instrument layout image is very cool. Never seen the sound stage information published before. More companies should publish that information.
        
        
        
        

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