Results 1 to 9 of 9

Thread: 075 - is xover at 5k too low?

  1. #1
    Senior Member
    Join Date
    May 2008
    Location
    Westchester NY
    Posts
    1,120

    075 - is xover at 5k too low?

    OK, I'm running a 3-way system and the tweeter is currently crossed at 5,000.

    I'm plannning on building a N7000 xover and wonder if it would change much.

    thx...

  2. #2
    Senior Member ratitifb's Avatar
    Join Date
    Feb 2006
    Location
    France
    Posts
    653

    Wink UHF only

    8000Hz and more sounds better for me

  3. #3
    Senior Member
    Join Date
    Mar 2007
    Location
    Los Angeles, Calif USA
    Posts
    183
    I haven't heard a 075/2402 in years, but JBL's min xover is 2,500Hz.

    What kind of mid-range are you using. If you are using a direct radiator I would xover at the lowest recommend to get horn loading.

  4. #4
    Senior Member
    Join Date
    May 2008
    Location
    Westchester NY
    Posts
    1,120
    ...compression driver horn is 2445H - 2".

  5. #5
    Senior Member
    Join Date
    Mar 2007
    Location
    Los Angeles, Calif USA
    Posts
    183
    Quote Originally Posted by robertbartsch View Post
    ...compression driver horn is 2445H - 2".
    Oh my, top shelf stuff....

  6. #6
    Senior Member
    Join Date
    Feb 2007
    Location
    Christchurch, NZ
    Posts
    1,400
    With the correct crossover the 2445 on the right CD horn will go out to 20Khz. There is no need to use a 2403 as well. And the 075 will only go out to 16Khz. JBL crossed the 2402 over at 2.5Khz in many of their designs but I would stick to something above 7Khz.

    Allan.

  7. #7
    Senior Member
    Join Date
    Mar 2007
    Location
    Los Angeles, Calif USA
    Posts
    183
    Quote Originally Posted by Allanvh5150 View Post
    With the correct crossover the 2445 on the right CD horn will go out to 20Khz. There is no need to use a 2403 as well. And the 075 will only go out to 16Khz. JBL crossed the 2402 over at 2.5Khz in many of their designs but I would stick to something above 7Khz.

    Allan.
    Yeah, I would also suggest the samething. In old JBL brochures, they use xover freqs of 5KHz - 7KHz.

    I was just debating whether it would be worthwhile to use an old 075/2402, but to my ears, the ancient 075/2402 pales against the newer drivers. I think the only thing the 075/2402 will buy you is wider dispersion of the highs. Maybe a 077/2405 would be a better match? This a rhetorical question since I haven't heard a 075/2402 or 077/2405 in awhile, just suggesting as a matter of discussion.
    Last edited by RKLee; 03-20-2009 at 12:21 PM. Reason: correct grammar

  8. #8
    RIP 2011 Zilch's Avatar
    Join Date
    Jun 2004
    Location
    Berkeley, CA
    Posts
    9,963
    Quote Originally Posted by RKLee View Post
    I think the only thing the 075/2402 will buy you is wider dispersion of the highs.
    Than what?

    Only thing I can think of more beamy is a JBL exponential w/slant plate lens....

  9. #9
    Senior Member
    Join Date
    Feb 2007
    Location
    Christchurch, NZ
    Posts
    1,400
    What horn are you running on the 2445?

    Allan.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Ti 5000 Low frequency driver LE120H
    By Ti 5000 in forum Lansing Product Technical Help
    Replies: 12
    Last Post: 05-27-2008, 11:29 AM
  2. 075 dcr low but plays fine.
    By kingjames in forum Lansing Product Technical Help
    Replies: 24
    Last Post: 08-30-2007, 06:14 AM
  3. What xover frequ. between 116A and 066?
    By Helmut in forum Lansing Product DIY Forum
    Replies: 3
    Last Post: 06-05-2007, 04:40 PM
  4. Xover frequency - am I deaf or what??
    By scorpio in forum Lansing Product General Information
    Replies: 2
    Last Post: 01-14-2005, 10:36 AM
  5. Advice requested for xover for old JBL D131 and new horn
    By jonathan z in forum Lansing Product Technical Help
    Replies: 4
    Last Post: 12-13-2003, 11:59 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
  •