Deluxe Reverb Rattle

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by kldonegan, Jan 7, 2008.

  1. Jan 7, 2008 #1
    kldonegan

    kldonegan Member

    Messages:
    731
    Joined:
    Mar 27, 2007
    Location:
    Nashville, TN
    So here's the scoop. I put a new speaker in my '66 Deluxe Reverb. Upon tightening everything up, I've got a rattle that is audible THROUGH THE SPEAKER when I crank it and play the lower strings. It sounds different than the amp drive, and stops about a third of the way into the sustain of the chord/note I'm playing. Here's what I've tried so far:

    -Amp into different speaker cabinet with known good speakers. Still get the rattle through the speakers in this cabinet.

    -Taking off pre-amp tube covers. Rattle still there.

    -Holding power tubes/rectifier tubes. Still there.


    It didn't start until after the speaker change. Any suggestions as to where to try next? I can't just live with it, as I track with the amp on a regular basis. Thanks!
     
    kldonegan, Jan 7, 2008
    kldonegan, Jan 7, 2008
    #1
  2. Jan 7, 2008 #2
    rooster

    rooster Member

    Messages:
    2,119
    Joined:
    Mar 9, 2005
    Location:
    Arizona
    You could have..... a rattle in your speaker. What speaker did you put in?

    rooster.
     
    rooster, Jan 7, 2008
    rooster, Jan 7, 2008
    #2
  3. Jan 8, 2008 #3
    67super

    67super Member

    Messages:
    1,465
    Joined:
    Apr 15, 2007
    Location:
    USA
    Since it seems to be speaker independent I would start the process of elimination.

    1. Try each channel and see if it's common to both.

    2. Start trying different tubes in each position one at a time or remove channel one preamp tube when in channel 2 etc. This will isolate and eliminate whether it's a tube.

    If thit's still there it could be a number of things. I had a similar problem in my 68 DR that turned out to be a weak solder joint.
     
    67super, Jan 8, 2008
    67super, Jan 8, 2008
    #3
  4. Jan 8, 2008 #4
    kldonegan

    kldonegan Member

    Messages:
    731
    Joined:
    Mar 27, 2007
    Location:
    Nashville, TN
    Rooster, It's not the speaker. First thing I did was try the amp into another cabinet... From my original post:

    -Amp into different speaker cabinet with known good speakers. Still get the rattle through the speakers in this cabinet.
     
    kldonegan, Jan 8, 2008
    kldonegan, Jan 8, 2008
    #4
  5. Jan 8, 2008 #5
    slider313

    slider313 Silver Supporting Member

    Messages:
    7,740
    Joined:
    Jul 28, 2005
    Location:
    NC
    Try a different rectifier tube. Sometimes you can get filiment rattle, which seems to comes through the speaker. If that's not it try replacing one pre amp tube at a time. A pre amp tube can also cause this.
     
    slider313, Jan 8, 2008
    slider313, Jan 8, 2008
    #5
  6. Jan 8, 2008 #6
    kldonegan

    kldonegan Member

    Messages:
    731
    Joined:
    Mar 27, 2007
    Location:
    Nashville, TN
    Thanks 67super/slider. Will try those tubes and see what happens!
     
    kldonegan, Jan 8, 2008
    kldonegan, Jan 8, 2008
    #6
  7. Jan 9, 2008 #7
    mbratch

    mbratch Member

    Messages:
    2,382
    Joined:
    Nov 3, 2003
    Location:
    Webster, NY
    I had a rattle in a 1965 BFDR that drove me nuts. Finally took the whole thing apart and found that the RFI screen was a little loose on the cab. I applied a few staples to refasten it and the noise was gone.

    And the noise did sound like it came from the speaker.
     
    mbratch, Jan 9, 2008
    mbratch, Jan 9, 2008
    #7
  8. Jan 10, 2008 #8
    kldonegan

    kldonegan Member

    Messages:
    731
    Joined:
    Mar 27, 2007
    Location:
    Nashville, TN
    Rectifier/Preamp tubes didn't do it. Tried a different speaker cabinet again, with the amp isolated in a different room. Still there...

    Is the RFI screen that chicken wire looking stuff on the top of the cab???
     
    kldonegan, Jan 10, 2008
    kldonegan, Jan 10, 2008
    #8
  9. Jan 10, 2008 #9
    slider313

    slider313 Silver Supporting Member

    Messages:
    7,740
    Joined:
    Jul 28, 2005
    Location:
    NC

    Check the solder joints on your cathode bypass caps; 25uf@25v.
     
    slider313, Jan 10, 2008
    slider313, Jan 10, 2008
    #9
  10. Jan 10, 2008 #10
    kldonegan

    kldonegan Member

    Messages:
    731
    Joined:
    Mar 27, 2007
    Location:
    Nashville, TN
    Time for a tech, I do believe...
     
    kldonegan, Jan 10, 2008
    kldonegan, Jan 10, 2008
    #10
  11. Jan 12, 2008 #11
    mbratch

    mbratch Member

    Messages:
    2,382
    Joined:
    Nov 3, 2003
    Location:
    Webster, NY
    Actually, more like screen door wire, but yes. :)
     
    mbratch, Jan 12, 2008
    mbratch, Jan 12, 2008
    #11

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice