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IBANEZ SR1000 VERY LOW OUTPUT

Discussion in 'Basses [BG]' started by Makatak, Aug 18, 2010.

  1. Aug 18, 2010 #1
    Makatak

    Makatak

    Apr 13, 2002
    New Zealand
    I have a 1991 Ibanez SR1000 , the one with the EMG IBZ-USA P-J style pups and it has next to no output , im talking hell-low . Tried new battery , it also has a passive bypass switch which only makes it marginally louder , all cables + amp are good confirmed by trying other basses .
    Does anybody have any experience with this model doing this , im thinking output jack ?? , i know the pups are passive or could they be fried ?? , maybe vol pot ?? . Any suggestions appreciated . I just want to check the basics before its guitar tech time [ he lives miles away !]
     
  2. Aug 18, 2010 #2
    danomite64

    danomite64

    Nov 16, 2004
    Tampa, Florida
    The pickups aren't EMGs, they're DiMarzios. Also, the switch isn't a bypass, it's a depth switch.

    PowerCurve1b.jpg
     
  3. Aug 18, 2010 #3
    Makatak

    Makatak

    Apr 13, 2002
    New Zealand
    Yeah , i remembered after I posted the thread the were DiMarzios . Always thought the 3 way toggle was 2 way depth and passive ie. in the 3rd " all the way down " or " off " position , the parametric is bypassed and has no affect [ on my 1989 SR1100e anyway ] . Anyway cheers for that , it was just a cheapie I bought for a rainy day project to restore . Damn good basses , had my 1100e for 19 years !
    P.S Nice catalogue shot !
     
  4. Aug 23, 2010 #4
    Makatak

    Makatak

    Apr 13, 2002
    New Zealand
    Fixed ... output capacitor on the circutboard wired backwards from factory , guitar tech has seen it before .
     
  5. Oct 23, 2019 #5
    THany

    THany

    Jul 24, 2019
    Israel
    Can someone please explain this?
    Trying to solve my 92' ibanez sr800 really really low volume. (My passive jazz bass special is 5 times louder
     
  6. Oct 23, 2019 #6
    Killed_by_Death

    Killed_by_Death Snaggletooth Inactive

    Jan 2, 2015
    14 Megameters from Groong Tehp
    From what I've read the pre-amp was using a polarized capacitor, which was switched around the wrong way.
    Look for +/- marks on capacitors on yours:
    [​IMG]
    If it's non-polarized it might have NP printed on it.
    In that case the direction doesn't matter.

    other non-polarized caps:
    [​IMG]
     
    THany likes this.
  7. Oct 23, 2019 #7
    THany

    THany

    Jul 24, 2019
    Israel
    Thank you very much. I will later take ritalin and try to understand exactly what you said ( no joke)
     
    chemical360 and Killed_by_Death like this.
  8. Oct 23, 2019 #8
    Killed_by_Death

    Killed_by_Death Snaggletooth Inactive

    Jan 2, 2015
    14 Megameters from Groong Tehp
    Some electrolytic capacitors are polarized, almost like a diode. They pass AC current better in one direction than they do in the other.
    So, if it was flipped, it would effectively be acting almost like a diode (one direction) instead of a capacitor.
     
  9. Oct 23, 2019 #9
    THany

    THany

    Jul 24, 2019
    Israel
    OMG, what a mess! Lol
    See the pic.
    20191023_204437.jpg 20191023_204414.jpg
     
  10. Oct 23, 2019 #10
    THany

    THany

    Jul 24, 2019
    Israel
  11. Oct 23, 2019 #11
    hypercarrots

    hypercarrots

    Jan 28, 2009
    california
    change the battery
     
  12. Oct 23, 2019 #12
    THany

    THany

    Jul 24, 2019
    Israel
    I have! Twice. Lol
    Its not the battery.
    Thanks
     
  13. Mar 19, 2021 #13
    GreyBass73

    GreyBass73

    Jun 30, 2014
    Italy, Tuscany, Arezzo
    Hi guys, after 30 years I decided to go back to playing an Ibanez SR1000E made in japan in 1989, bought by a private user in Italy. As soon as I plugged in I noticed an incredibly low volume, even lower than the volume of a Fender Jazz Passive. I searched the web for testimonials on this possible problem and found the topic covered here. I saw that the problem is solved, it seems to me @Makatak. I ask if it is possible to have more specifics on how the problem was solved. Thank you so much
     
  14. Feb 27, 2023 #14
    Makatak

    Makatak

    Apr 13, 2002
    New Zealand
    Hi just got back on talkbass, did you get your bass sorted ? I've just pulled the trigger on another 1991 SR1000, same problem low output even though it sounds fantastic. My guitar tech said the last one had an output capacitor around the wrong way, ,apparently there was a batch of them. This one should be the same so will be the same fix.