1960 cab sounds flat

Discussion in 'Cabinets & Speakers' started by bobbyvasco, Sep 30, 2021.

  1. bobbyvasco

    bobbyvasco Active Member

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    when i play lower e string in electric guitar it sounds horrible....like thin flat sound....it does not sound normal too me....
    I don't know is it because the speakers are bad?
    I run it thorough JVM 410 marshall amp

    so on clean lover e string sounds ridiculous...and overall sound on clean sounds bad too....
    my cab is from 90s....true vintage.....

    I am afraid if I sell it and the new cab will sound the same....
    I don't know if the speakers are bad or not...
    I replaced the rear plastic console because original was broken...etc....
     
  2. mAx___

    mAx___ Well-Known Member

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    Can you record a quick clip of what's happening?
     
  3. bobbyvasco

    bobbyvasco Active Member

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    I will during the weekend...
     
  4. Dogs of Doom

    Dogs of Doom >>> Moderator <<< Staff Member

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    check speaker polarities...
     
  5. ricksdisconnected

    ricksdisconnected Well-Known Member

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    THE WEEKEND!? :run::run:
    DO YOU REALIZE HOW FAR AWAY THAT IS FROM NOW? :run::run::run:
     
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  6. Matthews Guitars

    Matthews Guitars Well-Known Member

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    What kind of speakers are in it?

    Do any of them sound different from the others when you play at very low volume and put your ear up against each one in turn?
     
  7. fitz288

    fitz288 Well-Known Yinzer Gold Supporting Member

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    By chance, did this problem start soon after you replaced the "rear plastic console"...etc...?
     
  8. bobbyvasco

    bobbyvasco Active Member

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    i dont know if it started then....but it is just console with wires inside...and it is from marshall original....
    I am not sure if any sound different I have to try....but it would be strange that a low flat on less paul and fender would sound like of you struck the pan in clean...in overdrive I don't hear it...maybe because of overdrive?
     
  9. Gene Ballzz

    Gene Ballzz Well-Known Member

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    Very good question there, my friend! Many folks don't believe this, but even one speaker (or more) wired out of phase can ruin the sound of a 4x12!

    Another couple good questions are: A) What impedance and model are the speakers? & B) What ohms reading does a multi meter show between the tip and sleeve of a speaker cable plugged into the cabinet?

    Just Askin'
    Gene
     
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  10. bobbyvasco

    bobbyvasco Active Member

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    I got it for like 100 bucks few years ago and I am ready to let it go....the only option is to buy a new 1960 cab and see the difference.....I don't have any other solution...and then return the new one if it sounds bad too....so it must be amp but I doubt that......
     
  11. bobbyvasco

    bobbyvasco Active Member

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    I made a video a while back on my youtube there are 4 standard selections inside......it would be a shame if I would sell this and the new one would sound worse......
    it has 4 gt 75's inside



    and here I replaced the rear control panel

     
  12. bobbyvasco

    bobbyvasco Active Member

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    how and Is that a real problem?
     
  13. Matthews Guitars

    Matthews Guitars Well-Known Member

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    Speaker phasing is important. If a speaker is out of phase with another in the same cabinet, it'll sound thin, have no bass, and generally just sound OFF.
     
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  14. bobbyvasco

    bobbyvasco Active Member

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    that is exactly how lower string sounds....thin, NO BASS.....so how to check this?

    so I have read more about phasing, it means I plugged the minus wire when the plus should go and vice versa....but would not that mean that overdriven channel would sound bad too?
     
    Last edited: Sep 30, 2021
  15. Dogs of Doom

    Dogs of Doom >>> Moderator <<< Staff Member

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    hook up the speaker cable to the cabinet. You'll need to have the back off. Now, get a 9v battery & touch the terminals, 1 to the tip & the other to the sleeve.

    When you touch the battery, the speakers will all press all the way in one direction. They all have to be going the same direction, or they are out of phase/polarity...

    Depending on how you have it wired, it could be ½ the cab is off from the other, rather than 1 speaker.
     
  16. Dogs of Doom

    Dogs of Doom >>> Moderator <<< Staff Member

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    I'll do the battery like this w/ the speaker cable:

    9-volt-alkaline-battery-1-pack-1 copy.jpg
     
  17. bobbyvasco

    bobbyvasco Active Member

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    great tip

    so I just need to observe that the speakers move out and not in....
    I have a rear panel that allows me to have 2/4 or 4/4 speakers enabled....

    will 4x4 sound better than 2x4?
     
  18. bobbyvasco

    bobbyvasco Active Member

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    OK I opened up the cab, I checked all the cables if red is connected to + and black to - and everything is plugged in correct....
    but when I did battery test the speakers did not move not even a bit....all I could hear is some hiss sound is speakers when I connected it to battery.....

    so why does the speakers cones not move?
     
  19. bobbyvasco

    bobbyvasco Active Member

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    update 2 battery was not charged fully so it did not move the cones.....now it works...all 4 speakers work with correct phasing.....
    is there a way to plug some techno bass music on it to test the speaker?
     
  20. MP+

    MP+ Member

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    If your speakers don't move at all with 9volt DC there are only 3 possibilities, your wiring has a short circuit somewhere, your wiring has an open circuit (or break) somewhere near the terminal strip or input jacks- or - all speakers are blown. Your next step from here is to get a good ohmmeter, disconnect one wire from one terminal of each speaker, then check for a reading of about 12 ohms on the terminals + & - of each individual speaker after they are disconnected. This is a fault finding situation that has to go one step at a time. If your speakers meter Ok, then you work your way back towards the terminal board. A short circuit or open circuit fault could have resulted from incorrectly hooking up the new terminal board. Start with the speaker check.
     

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