Page 1 of 3 123 LastLast
Results 1 to 15 of 35

Thread: S3900 S4700 dbx DriveRack 260

  1. #1
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    14,548

    S3900 S4700 dbx DriveRack 260

    S3900 BiWired

    Courtesy of Greg Timbers.
    Attached Images Attached Images    

  2. #2
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    14,548
    S4700 BiWired

    Courtesy of Greg Timbers.
    Attached Images Attached Images    

  3. #3
    Senior Member Mctwins's Avatar
    Join Date
    Feb 2010
    Location
    Earth
    Posts
    521
    Hallo!

    Looks nice

    Is it measurerd in a anechoic chamber or in a ordinary room?

    Why the strange freq response above 10kHz in both speakers?

    dbx260 is a nice DSP

  4. #4
    Senior Member Mostlydiy's Avatar
    Join Date
    Apr 2013
    Location
    Sweden
    Posts
    235
    Lovely! Waiting for the K2s9900 numbers

    I appreciate the time you guys put in to this "DSP conversion project". Its a rather easy thing to try out when provided with these eq figures. Kudos!

    /Mostly

  5. #5
    Member
    Join Date
    Sep 2012
    Location
    Sweden
    Posts
    97
    @4313B,

    When you say(or G.T) biwired, how is it connected? Is there only one amp and bi-wire cable for left and right speaker or two amps for left and right speakers and separate cables from left and right out from respectively amp?

    If one amp is used how does the crossover work? To me this is impossible!

    Could you clarify?

  6. #6
    Member
    Join Date
    Sep 2012
    Location
    Sweden
    Posts
    97
    BTW, the dbx 260 is a great unit. If I could I would get my hands on a dbx4800, period

  7. #7

  8. #8
    Member
    Join Date
    Sep 2012
    Location
    Sweden
    Posts
    97

    , yes there is two binding post, or what do you mean?

    EDIT! I get it now The crossover points is not used on the dbx, only the parametric filters, right

  9. #9
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    14,548


    Quote Originally Posted by Mctwins View Post
    Why the strange freq response above 10kHz in both speakers?
    UHF unhooked. The focus was on the LF and HF.


    As one can see, this data is hot off the press.

    As for the DD65000 and DD67000, they aren't finished yet.

  10. #10
    Senior Member
    Join Date
    Nov 2008
    Location
    Gothenburg, Sweden
    Posts
    759
    Will he do it for 4365 as well? Please please pleeeeaase!
    I am really tempted to go active.

  11. #11
    Senior Member spkrman57's Avatar
    Join Date
    Feb 2005
    Location
    Columbus, Ohio
    Posts
    1,980

    I would hope...

    Quote Originally Posted by bubbleboy76 View Post
    Will he do it for 4365 as well? Please please pleeeeaase!
    I am really tempted to go active.
    But I think the 4365 has already been superceded with the Nd stuff.

    I have 1501Fe's and would love to see the possibilities.

    Ron
    JBL Pro for home use!

  12. #12
    Member
    Join Date
    Sep 2012
    Location
    Sweden
    Posts
    97
    Quote Originally Posted by Bobecca View Post
    , yes there is two binding post, or what do you mean?

    EDIT! I get it now The crossover points is not used on the dbx, only the parametric filters, right
    I have to correct myself here. I really dont understand how it is implemented in dbx260 or how the connection is done. What does the INPUT stands for, is it prePEQ or postPEQ?? I asume it is the prePEQ that is used here.

    In the dbx260 it is not possible to have more than seven prePEQ(first and last is only shelving type of filter) and four postPEQ(on each output).

    How is it possible to have 10 parametric settings on that provided chart(S4700)?

    It can not be biwired in this config. It has to be two amps involved!

    Am I missing something???????

  13. #13
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    14,548
    Quote Originally Posted by Bobecca View Post
    I have to correct myself here. I really dont understand how it is implemented in dbx260 or how the connection is done. What does the INPUT stands for, is it prePEQ or postPEQ?? I asume it is the prePEQ that is used here.

    In the dbx260 it is not possible to have more than seven prePEQ(first and last is only shelving type of filter) and four postPEQ(on each output).

    How is it possible to have 10 parametric settings on that provided chart(S4700)?

    It can not be biwired in this config. It has to be two amps involved!

    Am I missing something???????
    Ah! There might be symantics involved here. By "bi-wire", G.T. means that the passive networks are left in place and that the LF and HF inputs are used separately. One amp on the LF and one amp on the HF. The dbx comes before the LF and HF amps.

    I've never looked at the dbx manual.

  14. #14
    Senior Member Mctwins's Avatar
    Join Date
    Feb 2010
    Location
    Earth
    Posts
    521
    Quote Originally Posted by 4313B View Post


    UHF unhooked. The focus was on the LF and HF.


    As one can see, this data is hot off the press.

    As for the DD65000 and DD67000, they aren't finished yet.
    Thanks, I realized it later

    G.T can do a test with PA+ and JBL 4319, if he has the time

  15. #15
    Senior Member Mctwins's Avatar
    Join Date
    Feb 2010
    Location
    Earth
    Posts
    521
    Quote Originally Posted by 4313B View Post
    Ah! There might be symantics involved here. By "bi-wire", G.T. means that the passive networks are left in place and that the LF and HF inputs are used separately. One amp on the LF and one amp on the HF. The dbx comes before the LF and HF amps.

    I've never looked at the dbx manual.
    Ok, the amp question has been answerd

    Still don't get it about the numbers of PEQ(10 total in S4700) How did G.T do this??

    Does he mix prePEQ and postPEQ together??

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. S4700 for sale in the USA
    By Valentin in forum Lansing Product General Information
    Replies: 64
    Last Post: 12-16-2015, 08:24 PM
  2. S3900 is better than S4700???
    By martin_wu99 in forum Lansing Product General Information
    Replies: 440
    Last Post: 01-06-2014, 09:56 AM
  3. S3900 now part of JBL Synthesis US lineup.
    By Dave_72 in forum Lansing Product General Information
    Replies: 22
    Last Post: 01-13-2013, 09:56 PM
  4. Jbl S4700
    By 10 Watt Street in forum Lansing Product General Information
    Replies: 14
    Last Post: 10-04-2012, 11:27 AM
  5. New JBL model S4700 debuts at Audio Video Logic
    By jpw in forum Lansing Product General Information
    Replies: 10
    Last Post: 03-28-2012, 07:25 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
  •