1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

BFD...Worth the Investment or Not

Discussion in 'TAG McLaren Audio Owners' Forum' started by Joelc, May 18, 2005.

  1. Joelc

    Joelc
    Active Member

    Joined:
    May 16, 2004
    Messages:
    414
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +5
    Gentlemen:

    The topic says it all...what is your opinion/view as to the merits of placing a BFD is the subwoofer's path.

    The reason I ask is that it has been suggested that 1Hz increments in TMReq are not "sufficiently fine" and that the 0.1Hz increments available through the integration of the BFD are "sufficently fine".

    Of course -- there is the issue of my bad luck...

    TIA,

    Joel
     
  2. caleb

    caleb
    Active Member

    Joined:
    Sep 30, 2003
    Messages:
    368
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Location:
    Cape Town (Ex Holmfirth Yorkshire)
    Ratings:
    +3
    Knowing your sagas Joel, I would leave well enough alone.
     
  3. alexs2

    alexs2
    Well-known Member

    Joined:
    Nov 13, 2002
    Messages:
    13,895
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Ratings:
    +1,674
    I think that for any domestic situation,the increments and filter cutoffs via TMREQ are fine,and better than sticking yet another processor with all the added interconnects in the signal path.

    If TMREQ can sort out the bass response of the room my gear sits in(a 250yr old timber framed house with more room modes than I could believe)then I'm sure it doesn't need further filter resolution.
     
  4. edward

    edward
    Member

    Joined:
    Apr 2, 2003
    Messages:
    855
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    32
    Location:
    Reading
    Ratings:
    +26
    I wonder about the agenda of the person advising that the 1Hz granularity of TMREQ was not fine enough, Joel.

    Was this person trying to sell you something? If so, perhaps they’ll be willing to put their money where their mouth is: set up an AB/WithWithout test and get 3 trusted third parties to tell you which they think sounds better. Listen blind yourself and add your own “master” vote. If there is no definite improvement, how about sending me half the money you just saved – I’m going to a very good cause knees-up on Friday night in London and this wad would come in very handy;-)
     
  5. JohnMulcahy

    JohnMulcahy
    Member

    Joined:
    Jun 13, 2004
    Messages:
    181
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Aldershot
    Ratings:
    +20
    There is justification for that comment. To get precise correction of modes it is best to be within 1% of the mode's centre frequency so the 1Hz step size in TMREQ is coarser than ideal for modes below 100Hz, depending on the actual frequencies of the modes of course. We did have plans to increase the frequency resolution but fate intervened. The BFD has pseudo-1/60th octave steps (actually 1/3 octave intervals divided into 20 evenly spaced steps) which gives it finer resolution at the low end - the step size is <=1Hz below 100Hz and >1Hz above that.

    I'm not sure a BFD could be described as an investment, they are so cheap it is practically a consumable :D but it could have a useful role in managing a subwoofer.
     
  6. Joelc

    Joelc
    Active Member

    Joined:
    May 16, 2004
    Messages:
    414
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +5
    Thanks to everyone for the feedback.

    To take the mystery out of my initial posting the individual who is suggesting it is Doug Plumb, the gentlemen who wrote the ETF software. For those interested, he will be YMReqing my system once it is up and running.

    Cheers,

    Joel
     
  7. edward

    edward
    Member

    Joined:
    Apr 2, 2003
    Messages:
    855
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    32
    Location:
    Reading
    Ratings:
    +26
    Are you looking at an improvement for your own benefit or that of your audience of friends? If its the latter and you didn't tell them about this addition, how many would notice the improvement during the presentation of a movie?

    I accept what you're saying, John, but if it takes a meter to spot the difference, is there really a point to this?
     

Share This Page

Loading...