Tweaks...

glemay
glemay Posts: 574
edited November 2003 in Subwoofer Hookup & Bass Management
Anybody got any good/cheap tweaks?
Main System:
Denon AVR-2805, Polk Audio RTi70's, Polk Audio CSi40, Polk Audio FXi50, Paradigm PW-2200 v.2, Toshiba 42XV545U HDTV

Second System:
Denon AVR-1705, Polk Audio R40, Polk Audio CS245i, Polk Audio R15, Paradigm PS-1200a
Post edited by glemay on
· Share on FacebookShare on Twitter

Comments

  • Frank Z
    Frank Z Posts: 5,860
    edited November 2003
    http://clubpolk.polkaudio.com/forum/showthread.php?s=&threadid=13521&highlight=tweaks
    9/11 - WE WILL NEVER FORGET!! (<---<<click)
    2005-06 Club Polk Football Pool Champion!! :D
    · Share on FacebookShare on Twitter
  • glemay
    glemay Posts: 574
    edited November 2003
    How does placing a piece of granite under a subwoofer help? Do you put it under any other speakers?

    Gerald Lemay
    Main System:
    Denon AVR-2805, Polk Audio RTi70's, Polk Audio CSi40, Polk Audio FXi50, Paradigm PW-2200 v.2, Toshiba 42XV545U HDTV

    Second System:
    Denon AVR-1705, Polk Audio R40, Polk Audio CS245i, Polk Audio R15, Paradigm PS-1200a
    · Share on FacebookShare on Twitter
  • Frank Z
    Frank Z Posts: 5,860
    edited November 2003
    My HT is built over a crawl space, so the sub caused some reall wicked resonance that I could not tame 1005 using my preamps room resonance filter. Adding the slab helped smoth out the low end room response and allowed for better over all room resonance control.
    9/11 - WE WILL NEVER FORGET!! (<---<<click)
    2005-06 Club Polk Football Pool Champion!! :D
    · Share on FacebookShare on Twitter
  • glemay
    glemay Posts: 574
    edited November 2003
    I've got my HT in my bedroom which is on the third floor of the house. The flooring is either 1/2" or 5/8" not sure and it is laid on the Slient Flooring Truss System instead of your conventional 2 x 12. I also have a wall running the full lenght of my room underneath me , it is in the center running the full 20'. If it means anything, the entire house has sound proof drywall, and there is no attic, just one heavy 10 ton slate roof.

    How would I know for sure if I was getting resonances from the sub?
    Main System:
    Denon AVR-2805, Polk Audio RTi70's, Polk Audio CSi40, Polk Audio FXi50, Paradigm PW-2200 v.2, Toshiba 42XV545U HDTV

    Second System:
    Denon AVR-1705, Polk Audio R40, Polk Audio CS245i, Polk Audio R15, Paradigm PS-1200a
    · Share on FacebookShare on Twitter
  • Early B.
    Early B. Posts: 7,900
    edited November 2003
    glemay --

    Just get yourself a slab and see if it makes a difference.

    I took the advice of folks on this forum and bought a slab a few days ago for my sub. I have a carpeted wooden floor over a basement, so I went to Lowe's and paid $4 bucks for an 18" x 18" concrete slab about 1.5 inches thick (it's actually a large paver I stumbled upon in the landscaping section). Came home, spray painted it black, and tucked it under my sub. I got similar results as Frank Z mentioned.

    Nice tweak for $4.
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."
    · Share on FacebookShare on Twitter
  • Frank Z
    Frank Z Posts: 5,860
    edited November 2003
    Originally posted by glemay
    How would I know for sure if I was getting resonances from the sub?

    You could invest in a frequecy analyzer. There are also a lot of websites that offer software that perform the same function as a dedicated meter. Another option is to find some low frequency test tones on the WWW and use those in conjunction with your SPL meter to determine your room's response to low frequencies.

    My preamp plays low frequency test tones at 70db. All I have to do is set my meter for 70db, play the tones and watch the meter.
    9/11 - WE WILL NEVER FORGET!! (<---<<click)
    2005-06 Club Polk Football Pool Champion!! :D
    · Share on FacebookShare on Twitter