Results 1 to 15 of 51

Thread: Jbl B460 + Bx63a

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Senior Member
    Join Date
    Apr 2009
    Location
    France Near Paris
    Posts
    103

    Jbl B460 + Bx63a

    L300 SUMMIT use a 2235H and the B460 Passiv Subwoofer use 2245H
    I wonder if it's interesting to use a JBL B460 coupled with L300 SUMMIT ? there is a filter system JBL BX63A with the B460 connected between the amp and speakers, this does not duplicate with 2235H of L300 ?
    I have also OUT subwoofer on my Accuphase E203, and actually my L300 are connected directly on Speaker L and R.
    I dont realy anderstand how the system can be connected if interesting ..
    the JBLPrice for B460 on 1993 is $2150 has the same buying power as $3181,94 in 2009 (calculing with Inflation Calculator)

  2. #2
    Heather [Senorita member] hjames's Avatar
    Join Date
    Nov 2005
    Location
    NoVA - DC 'burbs
    Posts
    8,438
    Quote Originally Posted by mm54 View Post
    L300 SUMMIT use a 2235H and the B460 Passiv Subwoofer use 2245H
    I wonder if it's interesting to use a JBL B460 coupled with L300 SUMMIT ? there is a filter system JBL BX63A with the B460 connected between the amp and speakers, this does not duplicate with 2235H of L300 ?
    I have also OUT subwoofer on my Accuphase E203, and actually my L300 are connected directly on Speaker L and R.
    I dont realy anderstand how the system can be connected if interesting ..
    the JBLPrice for B460 on 1993 is $2150 has the same buying power as $3181.94 in 2009 (calculing with Inflation Calculator)
    (didn't you ask the same Q yesterday? - ah yes, you did - right here:
    http://audioheritage.org/vbulletin/s...4&postcount=91)


    Probably would be interesting
    B460 Subwoofer's 2245 can go lower than the 15s in an L300 system, fills in around the bottom, and Bx63a can put a little hump at the lower freqs to accentuate the bottom ...

    Its all a money game anyway - how much did you have to spend?
    2ch: RPi-4, Oppo, Acurus RL-11,Jolida 502,Valencias,JBL L212,Von Schw
    7: Oppo BDP103D, B&K, UREI 809A, JBL B460

  3. #3
    Senior Member BMWCCA's Avatar
    Join Date
    Feb 2006
    Location
    Virginia
    Posts
    7,425
    Quote Originally Posted by hjames View Post
    Its all a money game anyway - how much did you have to spend?
    Or just go with a 4345 and save space!
    ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."óGreg Timbers

  4. #4
    Senior Member
    Join Date
    Apr 2009
    Location
    France Near Paris
    Posts
    103
    Quote Originally Posted by hjames View Post
    (didn't you ask the same Q yesterday? - ah yes, you did - right here:
    http://audioheritage.org/vbulletin/s...4&postcount=91)
    Thank you hjames , I apologize , i have send a message to the lansing@audioheritage.org to delete this link
    i am newby (Posts: 65) ..I am always pressed for a response from members of this forum.. be indulgent thank you

  5. #5
    Senior Member Fangio's Avatar
    Join Date
    Oct 2005
    Location
    Germany
    Posts
    790

    Explore the manual

    Quote Originally Posted by mm54 View Post
    I dont realy anderstand how the system can be connected...
    http://audioheritage.org/vbulletin/s...ad.php?t=21164

  6. #6
    JBL 4645
    Guest
    That was good link and interesting read. I especially liked this part from the manual.

    The 2245H produces bass that is powerful and accurate. Reactive acoustical energy storage in the ported enclosure augments the coneís output so that cone excursion is minimal-keeping distortion very low. In a typical listening environment, the B460 can generate sound pressure levels of 115 to 120dB. It has the power to recreate earthquakes and cannon shots, but it also reproduce the full harmonic textures of a contrabassoon or the subtlety of softly played tympani.

    Seems good enough for Earthquake or Master and Commander

  7. #7
    Senior Member
    Join Date
    Apr 2009
    Location
    France Near Paris
    Posts
    103
    thank you Fangio for the link !

    Quote Originally Posted by JBL 4645 View Post
    Can you, please provide more information on this subject typically with diagrams.
    if i anderstand i must add a amplifier for the B460 ? do you think i can connect directly to my Accuphase without BX63A
    if someone using a B460 could make a connection diagram it would be easier for me and I might just be understanding if I need to add something to operate a B460 ..


  8. #8
    Senior Member Doc Mark's Avatar
    Join Date
    May 2008
    Location
    Southern, California, USA
    Posts
    1,374
    Good Morning, Michel,

    As I understand it, the BX63A is not only an electronic crossover, but also a special voltage drive, which boosts the signal to the 2245h at a specific place, and therefore gets the response that the B460 offers. Without it, I think that the system will not function as designed. I could be wrong, but that's how I've understood it to work. Best of luck, and God Bless!

    Every Good Wish,
    Doc
    The only thing that can never be taken away from you, is your honor. Cherish it, in yourself, and in others.

  9. #9
    Heather [Senorita member] hjames's Avatar
    Join Date
    Nov 2005
    Location
    NoVA - DC 'burbs
    Posts
    8,438
    Quote Originally Posted by Doc Mark View Post
    Good Morning, Michel,

    As I understand it, the BX63A is not only an electronic crossover, but also a special voltage drive, which boosts the signal to the 2245h at a specific place, and therefore gets the response that the B460 offers. Without it, I think that the system will not function as designed. I could be wrong, but that's how I've understood it to work. Best of luck, and God Bless!

    Every Good Wish,
    Doc
    Opimax has a B460 that sounds real nice without the BX63/63A (Base eXtension) device.

    The B380/B460 came out before the advent of home theatres when sub out ports on receivers weren't common.
    The BS63/A has a couple functions, - allowed you to loop your left and right mains through so it could extract a summed Low pass channel to run your sub. You set the crossover point and the gain, and feed its out to a (mono) poweramp for the sub.
    They do have a bump at the low end.

    http://www.jblproservice.com/pdf/Vin...BX63A%20ts.pdf

    http://manuals.harman.com/JBL/HOM/Owner%27s%20Manual/BX63om.pdf

    You can also see discussion of the unit in the thread here:
    http://audioheritage.org/vbulletin/s...ad.php?t=21164
    2ch: RPi-4, Oppo, Acurus RL-11,Jolida 502,Valencias,JBL L212,Von Schw
    7: Oppo BDP103D, B&K, UREI 809A, JBL B460

  10. #10
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    14,548
    As I understand it, the BX63A is not only an electronic crossover, but also a special voltage drive, which boosts the signal to the 2245h at a specific place, and therefore gets the response that the B460 offers. Without it, I think that the system will not function as designed. I could be wrong, but that's how I've understood it to work.
    Come on guys! We've covered this extensively. D.B. Keele? Ring any bells? All of you should know his name and be able to recognize it spelled forwards, backwards and upsidedown.


    AES E-Library: A New Set of Sixth-Order Vented-Box Loudspeaker ...

    AES E-Library: A New Set of Sixth-Order Vented-Box Loudspeaker ...

    B460

    Keele designed the BX63 way back when he was working at JBL (After leaving EV. He's now at Harman-Becker along with Richard H. Small of Thiele-Small fame).

    Don't let the title of the AES papers throw you with respect to the B380 and B460, they are quasi-third order alignments as are most high performance JBL loudspeaker systems due to their low Q transducers. Addition of the BX63 makes them quasi-fifth order. If you understand the concepts it all makes sense. One can choose to use the BX63 or not depending on boundary reinforcement in any given room.

  11. #11
    Heather [Senorita member] hjames's Avatar
    Join Date
    Nov 2005
    Location
    NoVA - DC 'burbs
    Posts
    8,438
    Quote Originally Posted by mm54 View Post
    thank you Fangio for the link !

    if i understand, i must add a amplifier for the B460 ? do you think i can connect directly to my Accuphase without BX63A
    if someone using a B460 could make a connection diagram it would be easier for me and I might just be understanding if I need to add something to operate a B460 ..

    Old thread, but since the original posting in 2009, I actually found a B460 for sale cheep, and had it shipped to me from Florida.
    I did find a BX-63A a year or so later, but frankly I have been running it from the Sub output of an Integra DTC 9.8 PreProcessor
    using a Harman Kardon Citation 22 Power Amp bridged to Mono, without the BX63A, and it plays VERY well that way!
    I have 4 UREI 809A coaxial monitors in the system, and tho they don't go real deep on their own, they are crystal clear otherwise.

    Name:  B460-Fit_7071 resize.jpg
Views: 249
Size:  155.8 KBName:  B460&UREI809A-2850 resize.jpg
Views: 251
Size:  98.6 KB

    My friend Steve built 2 of the standalone 2245 subwoofers for his home audio system, and drives them with Adcom monoblocks,
    and they are downright impressive on their own.
    Attached Images Attached Images  
    2ch: RPi-4, Oppo, Acurus RL-11,Jolida 502,Valencias,JBL L212,Von Schw
    7: Oppo BDP103D, B&K, UREI 809A, JBL B460

  12. #12
    Senior Member
    Join Date
    Feb 2009
    Location
    annapolis, md usa
    Posts
    563
    Quote Originally Posted by hjames View Post
    .....My friend Steve built 2 of the standalone 2245 subwoofers for his home audio system, and drives them with Adcom monoblocks,
    and they are downright impressive on their own.
    I think our man Steve has 4 of those bad boys in that closet now, doesn't he?

  13. #13
    Senior Member
    Join Date
    Apr 2009
    Location
    France Near Paris
    Posts
    103
    difficult to find .. JBL BX63A crossover for B460 sub.

  14. #14
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    14,548
    Yeah, it's probably easier to either build one yourself or have one built for you. I'm buried otherwise I'd whip one out for you. I've posted the schematics numerous times. I think I also posted how to modify the 5234A/5235 to do the same thing.

    We should probably make up a bunch of new circuit boards. It would be a nice little project for people, kind of like the neat little projects Rod Elliott makes available for folks. In fact, one of his projects might do the trick instead.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. DBX 18" Subwoofer Poorman's JBL B460
    By stephane RAME in forum Miscellaneous Gear
    Replies: 7
    Last Post: 03-19-2011, 10:35 AM
  2. Odeon Leicester Square a JBL installation.
    By JBL 4645 in forum General Audio Discussion
    Replies: 2
    Last Post: 12-13-2009, 06:20 AM
  3. JBL Control 1 summertime project surround array and more!
    By JBL 4645 in forum Lansing Product DIY Forum
    Replies: 95
    Last Post: 05-03-2009, 12:29 AM
  4. B460 and JBL Pro Sub opinions anyone?
    By Izzy Weird in forum Lansing Product Technical Help
    Replies: 13
    Last Post: 12-19-2005, 12:41 PM
  5. Weighing in on a few issues, L220 and B460
    By pmakres1 in forum Lansing Product General Information
    Replies: 18
    Last Post: 03-18-2005, 11:44 AM

Posting Permissions

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