/ Register

Ampeg BA 112 Amp Cover Removal

Discussion in 'Amps and Cabs [BG]' started by Danny Aldred, Dec 20, 2014.

  1. Dec 20, 2014 #1
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    Got a 2nd hand BA 112 and found the bolt that holds a PC board or something rolling around in the bottom of cabinet. I could see the impression of Hex nut on back of cabinet. Could anyone tell me how to remove the cover. that is what Ampeg service Rep told me to do.
     
  2. Dec 20, 2014 #2
    JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG


    Then take out the speaker, reach in the cab, and get your screw out.
     
  3. Dec 20, 2014 #3
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    Jimmy I want to remove the cover for the amplifier not the speaker. Just not quite certain about how to go about it. I have to resecure board to back of cabinet. Thanks for the reply
     
    Last edited by a moderator: Dec 20, 2014
  4. Dec 20, 2014 #4
    AlexanderB

    AlexanderB

    Feb 25, 2007
    Sweden
    IME, on some Ampeg cabs one would pull the threads in the wood before the grille comes off.
    The "perfect" tool to use here is something used at Mercedes to remove the central gauge cluster. It is a steel rod, similar to a bike wheel spoke, but with an angled hook at the end. Push it in, turn it so the hook grips, and then you pull the grill off. Easy and without damage.
    comdashpulls.jpg
     
  5. Dec 20, 2014 #5
    Grissle

    Grissle

    May 17, 2009
    The amp unit can be wedged in there pretty tightly even after the mounting screws are removed. But it will come off.
     
  6. Dec 20, 2014 #6
    JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    Hmmm...last edited by a moderator...that usually means they edited out some sort of wise-guy comment. Not sure if I want to continue helping.
     
  7. Dec 20, 2014 #7
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    I don't know why it was edited. I just joined yesterday. New to Talk Bass
     
    JimmyM likes this.
  8. Dec 20, 2014 #8
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    The Ampeg Rep told me to remove the srews for the cover but I am not certain if I have to remove the knobs or what I am just tring to remove the cover for the amplifier. Sorry for confusion
     
  9. Dec 20, 2014 #9
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    Do you know how to remove amp cover? Is it just the 4 screws on the back or do you have to remove the big screws on the side?
     
  10. Dec 20, 2014 #10
    Vintage-Blue

    Vintage-Blue Gold Supporting Member Commercial User

    Feb 13, 2008
    Cincinnati, OH
    Owner, Vintage Blue (repro cabinets)
    Have you removed the amplifier chassis from the cabinet yet? There are three screws on each side of the cabinet, back where the amp is. Those hold the amplifier in the cabinet. Once the amp is removed from the cabinet the top of it should be open so that you can see what's rattling. Note, this refers to the older version of the BA-112. I'm not sure if the newest version will be different. Be careful poking around inside as high voltage can still be present in capacitors even after the amp is powered off and unplugged.

    Capture.JPG
     
  11. Dec 21, 2014 #11
    JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    You don't have to remove the knobs, no. Just the screws that hold in the chassis.
     
  12. Dec 21, 2014 #12
    Grissle

    Grissle

    May 17, 2009
    The screws on the sides need to be removed, yes.
     
  13. Dec 21, 2014 #13
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    Thanks it was a penny some kid probably dropped in the vent holes on the back of the amp. Man I am so glad I found this forum.
    Thanks Jimmy it was a penny some kid proably droppped down in the vent holes
    Danny Aldred
     
    Vintage-Blue likes this.
  14. Dec 21, 2014 #14
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    You were right it was tight.

    Thanks

    Danny Aldred
     
  15. Dec 21, 2014 #15
    JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    Good thing you got it out...could have shorted out something.
     
  16. Dec 26, 2014 #16
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    Thanks Jimmy I used to have a B-15 portaflex back in the late 60's my first amp I started out with that and aTelestar Bass. I wish I had one now but the BA 112 isn't toobad
     
    JimmyM likes this.
  17. Dec 26, 2014 #17
    JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    Ya, I've got one of the new ones and I really dig it for the money.
     
    Danny Aldred likes this.
  18. Dec 28, 2014 #18
    Danny Aldred

    Danny Aldred

    Dec 18, 2014
    Man I saw James Brown when I was 13 or 14 at the city stadium and his Bass Player had a B-18 with a ext. speaker. Man I had never heard such Bass in my life. We did not have enough to get in so we were peeking through holes in the fence.
     
    JimmyM likes this.