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Thread: Saving a pair of 4435s

  1. #1
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    Saving a pair of 4435s

    Well, this is my first post here, and I'm happy too say, after much hunting, Ive managed to find a pair of 4435s.

    At first glance, and with out pulling the drivers out and testing them, it looks and feels like I may only need to replace the foam surrounds.

    The cabinets are in excellent shape, and I am very surprised, considering their age, that their not beat up, at all.

    I plan to keep everything original JBl gear, and at this point I am wondering if and where I can find, proper original JBl parts I may need, as I go along.

    I'm not interested in anything made by an after market manufacturer.

    I'm out west in Vancouver Canada, so anything local here would be great, but I'm more then happy too buy bits out of the USA.

    This is a great forum.. and there's some very knowledgeable people here..

    Ive been lurking and reading here for the last year or so.

  2. #2
    Senior Member Chevelle's Avatar
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  3. #3
    Senior Member BMWCCA's Avatar
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    There is no such thing as an "original" JBL surround material outside of a complete re-cone kit which, if available, are only sold to JBL authorized installers.

    That being said, many suppliers and pro-installers offer surrounds that perfectly replicate the originals. Rick Cobb is the one I have used successfully on several JBLs and other speakers and I would certainly recommend his kits.
    Quote Originally Posted by pos View Post
    He is still online and selling JBL kits:
    http://myworld.ebay.com/looneytune2001/
    Quote Originally Posted by super440 View Post
    gsb001; to get an email to rick,you have to use his mail,not ebay.
    send to rcobb@tampabay.rr.com
    Are you planning on doing the work yourself or having a pro do it?

    Welcome, and congratulations on your find! Exciting times ahead for you.
    ". . . 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
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    Have I started this thread in the right spot, or should it be moved?

    Here's some pics..... HO HO HO.....

    I'm an old school F.O.H mixer and some times on stage monitor mixer, I've changed a few cones and diaphragms over the years.....

    So I'm going to try too do as much as possible myself.

    Thank you for the contact info....
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  5. #5
    Senior Member 1audiohack's Avatar
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    Hi there and welcome to Lansing Heritage!

    Congrats on the great find!

    As has been said, JBL doesnít sell new surrounds except built onto new cones.

    I started a thread on ďButyl Rubber Surrounds from JapanĒ here a couple of years ago where I replaced the surrounds on my 4435ís with the material type that JBL is using now and I am delighted with them. I will see if I can link that thread to this reply.

    Please share as you go. For some reason we love to see this stuff.

    All the best,
    Barry.
    If we knew what the hell we were doing, we wouldn't call it research would we.

  6. #6
    Senior Member Ed Zeppeli's Avatar
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    Nice find!

    Keep the photos coming.
    DIY Array, 2242 sub, 4408, 4208, Control 8SR, E120 Guitar cab, Control 1, LSR305.

  7. #7
    Senior Member ivica's Avatar
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    ďButyl Rubber Surrounds from JapanĒ

    Quote Originally Posted by 1audiohack View Post
    Hi there and welcome to Lansing Heritage!

    Congrats on the great find!

    As has been said, JBL doesn’t sell new surrounds except built onto new cones.

    I started a thread on “Butyl Rubber Surrounds from Japan” here a couple of years ago where I replaced the surrounds on my 4435’s with the material type that JBL is using now and I am delighted with them. I will see if I can link that thread to this reply.

    Please share as you go. For some reason we love to see this stuff.

    All the best,
    Barry.
    Hi Barry,

    re-foaming" using “Butyl Rubber Surrounds from Japan”

    https://www.ebay.com/itm/RUBBER-SURR...oAAOSwNJ5Zfu0p

    http://www.audioheritage.org/vbulletin/showthread.php?38253-2234-Butyl-Surrounds-from-Japan&p=390685&viewfull=1#post390685

    http://www.audioheritage.org/vbulletin/showthread.php?40138-Butyl-Rubber-to-Replace-Foam-Anyone-Tried-It&p=408999&viewfull=1#post408999


    http://www.audioheritage.org/vbullet...l=1#post406154

    regards
    ivica

  8. #8
    Senior Member SEAWOLF97's Avatar
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    those are gonna slide off the pallets
    ďIf you think thatís the dumbest thing youíve ever heard,
    just wait a couple minutes!Ē

  9. #9
    Member Mitchco's Avatar
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    Wow, excellent find! Merry Xmas from someone nearby

  10. #10
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    Quote Originally Posted by SEAWOLF97 View Post
    those are gonna slide off the pallets
    no problem. That was just too see if they would fit on the skid.

    The picture of them packed in the crate was the final shipping set up.
    The company that packed them did an excellent job.

  11. #11
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    Well, I pulled the 2234H drivers out today, to confirm what they are, and lo and behold they are the right animal, so I have 4 2234-H drivers, they all came in between, 6.4 and 7 on the ohm meter, and looks too be all original. So far it looks like all I will need to do is a re-foam and their back in action, I ordered some foam kits from Rick, (thanks for the contact) they should be up here in Canada in a week or so. The cabinets have the horn supports built in, the crossovers are all there, and the two 2234s are separated by wood down the middle. Tomorrow I will pull the horns out and see what drivers are there, I forgot to bring allen keys for the bolts.

    I'm amazed that no ones messed with these 30+ year old speakers... shocked actually.
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  12. #12
    Dang. Amateur speakerdave's Avatar
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    Good news!
    "Audio is filled with dangerous amateurs." --- Tim de Paravicini

  13. #13
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    Well, time for an update.
    refoam all done, system up and humming

    well the 4435 is a very, very nice sounding studio monitor.

    My system at this point is 2 mirrored 4435s, a bryston 8bst running only channel 1 and 2, left and right.

    I use a Klark teknik DN442 as a preamp, with its two channels of parametric eq if needed, but Iím finding I really donít need much eq, except to my own taste or to tune the system to a particular album.

    And a sony CD player.

    Waiting in in the wings to eventually try, is a BSS FDS 366 omnidrive compact plus and a BSS FDS 926 varicurve for tuning and more eq if I want.
    The 8b has four channels of 120 watts each, so it could be used to byamp the system with the omnidrive running it, or the 8B can be bridged into 400 Watts a side which is ideal with the internal crossover, or for running the bottom end and using the external crossover and a different amp to run the horns. Perhaps a tube amp, I understand they sound really soft on these horns.

    I also found a pair of 4430s and couldnít pass them up, but after comparing the 4430, the 4435 is a whole step above in overall sound quality.
    I could also use the omnidrive and set up a surround system with the 4435s up front and the 4430s for rears and the 8B could power it all.....


    Yes, Iím having way too much fun......
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  14. #14
    Senior Member 1audiohack's Avatar
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    Quote Originally Posted by oceansailor View Post
    Well, time for an update.
    refoam all done, system up and humming

    well the 4435 is a very, very nice sounding studio monitor.....

    I also found a pair of 4430s and couldnít pass them up, but after comparing the 4430, the 4435 is a whole step above in overall sound quality...

    Good work!

    I found the exact same, the 4430ís do sound pretty good until you get them in the same room with the 4435ís. I gave my daughter the 4430ís.

    Congrats again!

    Barry.
    If we knew what the hell we were doing, we wouldn't call it research would we.

  15. #15
    Senior Member Ian Mackenzie's Avatar
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    https://www.google.com/amp/www.instr...famp_page=true

    Not for the faint hearted.

    Removing the old gaskets, the old surround, the dust cap and centring with shims and gluing a new surround and dust cap. Thatís surgery l prefer to put in the hands of an experienced tech. If they stuff it up itís their problem!

    Btw you have one of the best Jbl monitors and most successful in terms of production tenure. Enjoy 😉

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