Results 1 to 10 of 10

Thread: Weber Java Kit

  1. #1
    ToneOholic! big_teee's Avatar
    Join Date
    Jun 2010
    Location
    Mid-South USA
    Posts
    11,388
    Thumbs Up/Down
    Received: 849/32
    Given: 839/14
    Rep Power
    22

    Weber Java Kit

    Has anyone built a Weber Java Kit.
    It appears to be a Trainwreck Express on Steroids.
    Weber Original Design Kits
    If you look at their schematic, and compare it to the Expresses.
    https://taweber.powweb.com/store/java_schem.jpg
    http://www.blueguitar.org/new/schem/...k/wreckxpr.pdf
    I'm wondering why they don't use a choke.
    I notice none of the TWs use Chokes.
    Looks like hum and noise would be an issue?
    Any comments on both the Trainwreck Express and the Java Appreciated!
    Thanks,
    Terry

    0 Not allowed! Not allowed!


    "Don't Let Yesterday, Use Up Too Much of Today." Will Rogers 1930s

    Terry

  2. #2
    Supporting Member loudthud's Avatar
    Join Date
    May 2006
    Location
    Near Dallas Texas
    Posts
    3,531
    Thumbs Up/Down
    Received: 211/0
    Given: 113/1
    Rep Power
    18
    The TW Express is tightly tuned for B+ sag induced compression. There is a story that Ken could hear the difference between 9.1K and 10K resistors in the decoupling string while listening over the phone. I'd like to get ahold of one to measure the gain and compression.

    0 Not allowed! Not allowed!
    WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
    REMEMBER: Everybody knows that smokin' ain't allowed in school !

  3. #3
    ToneOholic! big_teee's Avatar
    Join Date
    Jun 2010
    Location
    Mid-South USA
    Posts
    11,388
    Thumbs Up/Down
    Received: 849/32
    Given: 839/14
    Rep Power
    22
    Quote Originally Posted by loudthud View Post
    The TW Express is tightly tuned for B+ sag induced compression. There is a story that Ken could hear the difference between 9.1K and 10K resistors in the decoupling string while listening over the phone. I'd like to get ahold of one to measure the gain and compression.
    So what happens if you use a Choke?
    Will it drastically change the tone?
    I guess I could try it both ways if and when I build it?
    T

    0 Not allowed! Not allowed!


    "Don't Let Yesterday, Use Up Too Much of Today." Will Rogers 1930s

    Terry

  4. #4
    Senior Hollow State Tech Bruce / Mission Amps's Avatar
    Join Date
    May 2006
    Location
    Denver, Colorado
    Posts
    3,045
    Thumbs Up/Down
    Received: 7/0
    Given: 0/0
    Rep Power
    17
    Unless you have NOS preamp tubes, the correct NOS EL34s, the right carbon impregnated black dye wire and correct zinc oxide dye wire... both of which will need to be glued down to the sweet spot on the chassis, plus those old TMI trannys.... you aren't going to get a Trainwreck.
    Regardless, stay away from cheap Chinese parts and Chinese transformers and you'll get a very good sounding handmade amp.

    0 Not allowed! Not allowed!
    Bruce

    Mission Amps
    Denver, CO. 80022
    www.missionamps.com
    303-955-2412

  5. #5
    Better Tone thru Mathematics bob p's Avatar
    Join Date
    May 2006
    Location
    Chicago, USA
    Posts
    4,909
    Thumbs Up/Down
    Received: 75/0
    Given: 0/0
    Rep Power
    18
    The Java kit uses CF to drive the tonestack. I don't remember seeing an Express schematic that did that.

    0 Not allowed! Not allowed!
    "Stand back, I'm holding a calculator." - chinrest

    "I happen to have an original 1955 Stratocaster! The neck and body have been replaced with top quality Warmoth parts, I upgraded the hardware and put in custom, hand wound pickups. It's fabulous. There's nothing like that vintage tone or owning an original." - Chuck H

  6. #6
    ToneOholic! big_teee's Avatar
    Join Date
    Jun 2010
    Location
    Mid-South USA
    Posts
    11,388
    Thumbs Up/Down
    Received: 849/32
    Given: 839/14
    Rep Power
    22
    Quote Originally Posted by bob p View Post
    The Java kit uses CF to drive the tonestack. I don't remember seeing an Express schematic that did that.
    If you look the CF is Optional.
    It can be built with or without it.
    I was actually shooting for a 2204, but Weber didn't make one.
    The Java looked like about the closest thing.
    Looked like a lot of parts there that can be made into something.
    The Guy I was going to build for doesn't have a lot of Jack.
    T

    0 Not allowed! Not allowed!


    "Don't Let Yesterday, Use Up Too Much of Today." Will Rogers 1930s

    Terry

  7. #7
    ToneOholic! big_teee's Avatar
    Join Date
    Jun 2010
    Location
    Mid-South USA
    Posts
    11,388
    Thumbs Up/Down
    Received: 849/32
    Given: 839/14
    Rep Power
    22
    After further searching through different schematics, the Java is just a variation of the 6G6 Bassman.
    I think I will make my own variation of the 6G6 and put it in a JTM45 Cab, with a choke!
    http://www.el34world.com/charts/Sche...SSMAN_6G6A.pdf

    0 Not allowed! Not allowed!


    "Don't Let Yesterday, Use Up Too Much of Today." Will Rogers 1930s

    Terry

  8. #8
    Better Tone thru Mathematics bob p's Avatar
    Join Date
    May 2006
    Location
    Chicago, USA
    Posts
    4,909
    Thumbs Up/Down
    Received: 75/0
    Given: 0/0
    Rep Power
    18
    I think that part of what you're noticing is that the basic topology of some of these gainy boutique amps looks like a lot like a Princeton Reverb with a jumper in place of the reverb mix resistor. some values get tweaked along the way to voice the amp.

    0 Not allowed! Not allowed!

  9. #9
    Senior Member
    Join Date
    Dec 2009
    Posts
    1,170
    Thumbs Up/Down
    Received: 1/0
    Given: 1/1
    Rep Power
    11
    I ordered some stuff way back, no kit though. I seem to remember weber being cheaper then most vendors, but the stuff I got wasn't, well lets to it, as robust as I had hope.

    Edit, you sure you want an amplifier without reverb?

    0 Not allowed! Not allowed!
    In this forum everyone is entitled to my opinion.

  10. #10
    ToneOholic! big_teee's Avatar
    Join Date
    Jun 2010
    Location
    Mid-South USA
    Posts
    11,388
    Thumbs Up/Down
    Received: 849/32
    Given: 839/14
    Rep Power
    22
    Quote Originally Posted by überfuzz View Post
    I ordered some stuff way back, no kit though. I seem to remember weber being cheaper then most vendors, but the stuff I got wasn't, well lets to it, as robust as I had hope.

    Edit, you sure you want an amplifier without reverb?
    Going to build another amp with gain, without reverb.
    Will sell my friend one of the two. I will have after I build this one.
    He wants to buy my 2204 clone, but I will need something to replace it.
    He likes my 2204, He Says it Has Balls!
    He has a bunch of combo amps with reverb but doesn't ever use it.
    He does use some pedals though.
    I will probably order some stuff from weber, and some stuff from mojo.
    I have an account with mojo, but some of their stuff still high IMO at a discount.
    TubeDepot has some pretty good prices on some stuff, like loose resistors.
    T

    0 Not allowed! Not allowed!


    "Don't Let Yesterday, Use Up Too Much of Today." Will Rogers 1930s

    Terry

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Weber 6H50 Kit
    By big_teee in forum Kit Amps
    Replies: 2
    Last Post: 04-16-2013, 12:19 AM
  2. Weber 6A20 kit blowing fuses
    By rstreber in forum Kit Amps
    Replies: 17
    Last Post: 03-18-2010, 01:40 AM
  3. Weber vs Metropoulos Plexi Kit?
    By Amptone1 in forum Kit Amps
    Replies: 3
    Last Post: 02-20-2008, 02:26 AM
  4. Too high B+ in 5F6A Weber Kit with M-M Iron
    By Mark Black in forum Debugging Your Build
    Replies: 10
    Last Post: 03-07-2007, 12:14 PM
  5. weber java issues...please help
    By Cbookman in forum Debugging Your Build
    Replies: 4
    Last Post: 02-21-2007, 01:55 PM

Bookmarks

Posting Permissions

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