Altec 811B Horn + Big Woofer DIY System

Discussion in 'DIY' started by spwath, Jan 8, 2018.

  1. Hrodulf

    Hrodulf MOT: Sonarworks

    Friend
    Joined:
    Sep 28, 2015
    Likes Received:
    1,249
    Dislikes Received:
    2
    Trophy Points:
    93
    Home Page:
    Why would an inherently unlinear (inductive) passive element sound better than a resistor based voltage divider?
     
  2. dmckean44

    dmckean44 In a Sherwood S6040CP relationship

    Friend
    Joined:
    Nov 17, 2016
    Likes Received:
    681
    Dislikes Received:
    2
    Trophy Points:
    93
    Location:
    San Diego
    I'm not really sure of the reasons (maybe someone else here knows better), but in my experience building speaker crossovers, autotransformers have a much more dynamic and clear sound than resistive attenuators.
     
  3. Priidik

    Priidik Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    832
    Dislikes Received:
    0
    Trophy Points:
    93
    Location:
    Estonia
    An audio transformer is not significantly nonlinear in audio range.
    Matter of perspective I suppose. For lots of folks devices with signal transformers are 'effect blocks'.

    When the subject is dialing down woofer, then the transformer would act like decent voltage source, while L-pad won't (poor damping and resulting screw up in driver Qts). For mid or tweeter I suppose maintaining correct Qts still matters, only the acoustic impact is less severe.
    For @spwath I recommend matching drivers for sensitivity as good as possible, with woofer having the least sensitivity in compromise. I bet the xo transformers are not cheap and no matter how good, they degrade the signal.
     
  4. purr1n

    purr1n Loves Sex and Records

    Staff Member Friend
    Joined:
    Sep 24, 2015
    Likes Received:
    30,921
    Dislikes Received:
    49
    Trophy Points:
    113
    Location:
    Calabasas, CA
    Still need to ship you horns. Have not forgotten.
     
  5. Thad E Ginathom

    Thad E Ginathom Friend

    Friend
    Joined:
    Sep 27, 2015
    Likes Received:
    2,909
    Dislikes Received:
    5
    Trophy Points:
    113
    Location:
    India
    OH... MY... GOD...

    Please... one for the speaker-porn thread. They don't gut much more porno (whilst still repembling normal speakers) than that

    :punk:
     

Share This Page