Svs Cs+ Spl

Discussion in 'Archived Threads 2001-2004' started by Ron RB, Feb 11, 2002.

  1. Ron RB

    Ron RB Auditioning

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    I just received my dual SVS 20-39CS+ package and it sounds great. My room is approx 14x19 with a 8' ceiling. Here are my corrected SPL figures. Any suggestions on my calibrations?
    20Hz--83.5dB.............1Khz---79dB
    25----83dB...............1.25---81dB
    31.5--76.5dB.............1.6----79dB
    40----78.5dB.............2------77dB
    50----78.5dB.............3.15---80dB
    63----82.5dB.............4------82dB
    80----82.5dB.............5------83dB
    100---83dB...............6.3----83dB
    125---81dB...............8 -----82dB
    160---83.5dB.............10 ----79.5dB
    200---81dB...............12.5---79dB
    250---81.5dB.............16-----69dB
    315---80.5dB.............20-----68dB
    400---83dB
    500---81dB
    630---77.5dB
    800---79dB
    Equipment
    B&K Ref 30
    B&K Ref 7270
    Pany DVD RP91
    NHT V2.4 Fronts
    NHT VS2.4 Center & Rears
    NHT CI1.5 Sides
    Sampsom 1000
    SVS 20-39CS+
     
  2. Ned

    Ned Supporting Actor

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    Your in-room response is 20-80hz +/- 3db!
    That is *awesome* linearity considering the problems that could occur with room modes. Not to mention incredible extension compared to virtually all other major subwoofer brands. Nothing left to do now but enjoy it [​IMG]
     
  3. Ron RB

    Ron RB Auditioning

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    Ned,

    Thank you for the reply, I did not know if I should be concerned with the dB drop at 31.5Hz.
     
  4. RichardH

    RichardH Supporting Actor

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    Well, you could boost a little at 31.5, but you're going to lose amp headroom if you do that, so I would recommend against it. Plus, it might just be a suck-out frequency that no amount of boosting is going to fix. I agree that basically you have a great respose curve, and I would just enjoy it!!!
    Nice setup BTW [​IMG] [​IMG]
     
  5. SVS-Ron

    SVS-Ron Screenwriter

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    Ron,

    I do believe you are the first person on the planet to check the response of an SVS above 200Hz. Seems we could handle Bose Accoustimass modules after all. ;^)

    If you have the tones (be very careful not to do them too loud or too long. Very hard on a voice coil, sine waves) maybe try below 20Hz? It'd be interesting to see how your room placement is working to keep the low bass from rolling off. In any case I agree with every one else here in that you have a very good in-room response. You might be able to flatten the 30-50Hz area but as Richard says it'd be best if you simply enjoy your great bass for a while before giving that much thought.

    Ron
     
  6. Ron RB

    Ron RB Auditioning

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    Ron,

    My test disk stops at 20Hz. Do you know of any test disk that will go below the 20Hz range? I am very pleased with my dual CS+ subs. In my room they are at least twice as powerful as the regular CS model.

    Also I am proud to be the first person on the planet to check the response of an SVS above 200Hz. I guess the title of this post should of been a little clearer.

    Thanks RB
     
  7. Steve Stogel

    Steve Stogel Supporting Actor

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    Stryke has a test CD that goes down to 10Hz. Just go to the Test CD section http://www.stryke.com/ . Hope it helps.
    Steve
     
  8. Tom Vodhanel

    Tom Vodhanel Cinematographer

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    www.autosound2000.com has the $15 #101 disc...sines to 10hz.
    You can DL Spectraplus( www.spectraplus.com) and use it's tone generator feature to make sweeps down to 1hz if you want.
    Be careful running anything at more than low levels though.
    You might be able to tame the peaks and dips a bit with the addition of an EQ...but it's always up to the end user if the price will justify the improvements. The art351 might be a good choice hear as it does have sliders centered at 31 and 40hz.(along with 20,25,50,63,80hz,ect...and a user adjustable subsonic filter.
    TV
     

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