NAD - 1968 Guild ThunderBass (completed)

Discussion in 'Amps and Cabs [BG]' started by Oren Hudson, Jul 3, 2017.

  1. Oren Hudson

    Oren Hudson

    Dec 25, 2007
    Gastonia, NC
    IMG_1036.JPG IMG_1038.JPG IMG_1040.JPG IMG_1041.JPG IMG_1042.JPG IMG_1043.JPG IMG_1033.JPG IMG_1035.JPG Got this rig 4 months ago. I finally completed it's rehab 7/2, and it's now in tip top shape performance wise and looks wise.

    When I got it, the head didn't work and was missing the mounting apparutus. The cab was missing the rear panel (meaning no jack,) one handle, the dolly and various screws. The entire cab had been lined with a layer of Styrofoam with the insulation gone or deteriorated.

    The head went to Alpha Sound and was gone through by Al Forbes and Buddy Bost, the amp masters.

    I made a new back panel and installed a period correct jack plate, jack and screws. Did the same for the back panel. Note that all screws and bolts were slotted rather than Phillips. Took some doing, put I managed to find replacements in slotted screws. I found some identical tolex and glued it to the back panel. The speakers were original, but I wanted to preserve those, so I installed some sweet JBL K140's. I rewired those with the correct white and black cloth speaker wire. I got rid of the dumb styrofoam and replaced the insulation. Put it back together and tested. Horrible rattles all over the cab. Long story short, I doubled the bracing screws and added a middle support bar to tighten up the middle of the back panel. Several hours later, success! It's now rattle and vibration free, even driving it with a 350 Ampeg SVT.

    A ton of work and then some, but the results are awesome.

    Here you go,
    deathness, GregC, SirMjac28 and 31 others like this.
  2. beautiful!!! i had a 65 thunderbass and 69 guild thunderstar (1x15 version of your cab w/ jbl d140) and it was a great rig. wonderful punchy tube tone.

    i've always loved those Guild 2 tone grill cloth. They're the only ones that did that, so funky.
    Oren Hudson likes this.
  3. Al Kraft

    Al Kraft Supporting Member

    May 2, 2016
    Northern Virginia
    Beautiful piece of work...thanks for sharing!!
    Oren Hudson likes this.
  4. Oren Hudson

    Oren Hudson

    Dec 25, 2007
    Gastonia, NC
    They are quite unique and cool. I was very fortunate that the grill cloth was in excellent condition just needing a cleaning. I have some D140's that I was going to put in it, but discovered that one of them had issues. The K's sound super though.
    markjazzbassist likes this.
  5. Al Kraft

    Al Kraft Supporting Member

    May 2, 2016
    Northern Virginia
    They were always great sounding rigs and with all the work you just did I'm sure yours is exceptional. The workmanship/craftsmanship jumps off the page in those pictures.
    Oren Hudson likes this.
  6. What power tubes does yours have? 8417, 6L6, or 6550?
  7. Jefenator

    Jefenator Supporting Member

    Aug 22, 2008
    Freaking cool!! :bassist:
    Oren Hudson likes this.
  8. Oren Hudson

    Oren Hudson

    Dec 25, 2007
    Gastonia, NC
    I believe they are 8417 and the original ones to the best of my memory at the moment. I know that they are not 6L6.
    markjazzbassist likes this.
  9. roller

    roller Supporting Member

    Mar 30, 2014


  10. Teacher


    May 3, 2012
    Sweet rig! How does it sound?
  11. REMBO


    Jul 26, 2011
    beautiful job!!
    Oren Hudson likes this.
  12. Spidey2112


    Aug 3, 2016
    Good job, Oren!
    Oren Hudson likes this.
  13. Wisebass


    Jan 12, 2017
    Lost in Space
    Hi Oren :) cool rig!!

    I hope it is as loud as it looks :hyper::hyper::hyper::hyper:

    maythe bass be with you

    Oren Hudson likes this.
  14. Roxbororob

    Roxbororob Supporting Member

    Jun 8, 2015
    Very, very nice Oren.
    Oren Hudson likes this.
  15. Oren Hudson

    Oren Hudson

    Dec 25, 2007
    Gastonia, NC
    Thanks. Pretty impressive for 50 watts, even going with the bass controls cranked 3/4 . The JBL's can give some thump or go to the classic mode. :)
    markjazzbassist and Teacher like this.
  16. pbass2


    Jan 25, 2007
    Los Angeles
    Awesome! That'll be a killer amp for the studio too at that wattage. Bet it sounds great!
    Oren Hudson likes this.
  17. Morrighan

    Morrighan la Contessa Gold Supporting Member

    Oct 22, 2015
    Isle of Everywhere
    Very sharp.
    Oren Hudson likes this.
  18. JKB1957


    Jul 18, 2015
    Beautiful. Keep the groove.
    Oren Hudson likes this.
  19. Way to cool for school!
    Takes me back in time just look in at it.
    Nice restoration!
    Oren Hudson likes this.
  20. SirMjac28

    SirMjac28 Patiently Waiting For The Next British Invasion

    Aug 25, 2010
    The Great Midwest
    Beautiful piece of history congrats on a great restoration.
    Oren Hudson likes this.