Results 1 to 7 of 7

Thread: Compression Assy Alignment v.s. V C Alignment

  1. #1
    Senior Member
    Join Date
    Dec 2011
    Location
    Maryland
    Posts
    309

    Compression Assy Alignment v.s. V C Alignment

    The 511/808 vc lines up w/515 vc axially
    In the 811/808 application the bug screen and 515 screen line-up axially also.


    Question: is the compression assy output plane (assuming the screens are in the intfc plane)
    a more correct alignment feature (from a listening standpoint)
    OR is the VC align. still "king of the hill"


    Note: dimensions taken from A7 cabinets w/factory mtd sp.

  2. #2
    Administrator Robh3606's Avatar
    Join Date
    Apr 2003
    Location
    Rocinante
    Posts
    7,984
    Hello

    I have always used the VC for the alignment. That said the best way is to either go for the deepest null at crossover with one of drivers polarity reversed or use the Impulse response.

    Rob
    "I could be arguing in my spare time"

  3. #3
    Senior Member
    Join Date
    Dec 2011
    Location
    Maryland
    Posts
    309

    Impulse no.s

    Quote Originally Posted by Robh3606 View Post
    Hello

    I have always used the VC for the alignment. That said the best way is to either go for the deepest null at crossover with one of drivers polarity reversed or use the Impulse response.

    Rob
    I guess w/all horn sp. the impulse numbers would be close enough to not bother w/it..

  4. #4
    Senior Member
    Join Date
    Dec 2011
    Location
    Maryland
    Posts
    309

    Impulse response

    Is there a way to do an impulse response w/o
    spending a lot on equipment..?

  5. #5
    Senior Member ivica's Avatar
    Join Date
    Jan 2008
    Location
    serbia
    Posts
    1,633
    Quote Originally Posted by Fort Knox View Post
    Is there a way to do an impulse response w/o
    spending a lot on equipment..?
    I think that Robh3606 suggestion is very easy to realize, but some kind of microphone is necessary. Measuring minimum "reading" at the crossover frequency with inverted (or direct) polarity (depending of the network order) of one driver (to the other one).

    Regards
    Ivica

  6. #6
    Senior Member
    Join Date
    Dec 2011
    Location
    Maryland
    Posts
    309

    MIC ck

    Quote Originally Posted by ivica View Post
    I think that Robh3606 suggestion is very easy to realize, but some kind of microphone is necessary. Measuring minimum "reading" at the crossover frequency with inverted (or direct) polarity (depending of the network order) of one driver (to the other one).

    Regards
    Ivica
    Good Idea....w/mic (Radio Shack meter) @ x-over freq (From test cd) I had no vol adjust
    on EQ slider ..so I rev...term. on horn.. and got respon.... on meter
    (and made sp.. bass heavy)....

  7. #7
    Senior Member
    Join Date
    Dec 2011
    Location
    Maryland
    Posts
    309

    Polarity..Congradulations

    Name:  143.jpg
Views: 180
Size:  98.5 KB



    Here's some of the rag-tag stuff I had to work with..
    all the horns terminals were marked ...but if I remember
    right..you may have to run the 811 backward porlarity...

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Time-alignment
    By boputnam in forum General Audio Discussion
    Replies: 15
    Last Post: 08-09-2013, 02:18 PM
  2. Need help with phase alignment
    By djnagle in forum General Audio Discussion
    Replies: 9
    Last Post: 03-22-2010, 03:25 PM
  3. Speaker alignment on 250 Ti
    By gerard in forum Lansing Product DIY Forum
    Replies: 21
    Last Post: 04-02-2005, 01:41 PM
  4. Time Alignment
    By alskinner in forum Lansing Product General Information
    Replies: 76
    Last Post: 03-15-2005, 05:01 AM
  5. 2482 gap alignment
    By jmai in forum Lansing Product Technical Help
    Replies: 1
    Last Post: 02-09-2004, 11:52 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •