mika
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Posts: 182
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Post by mika on Jun 21, 2015 15:36:40 GMT -7
I played this amp last week with zero issues. then travelled to knoville in a van kept my amp head level secure as normal. Took it iout and whne I tried to play the colume was at about 90% of what it used to be. you can barely hear it. When I tried it again at home, it goes full volume for maybe 4 secs then back to almost nothing. I tried pulling all the preamp tubes for a clean set and nothing. Any suggestions. Trying to aboid a tech and those prices at this point.
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Post by KeithA on Jun 21, 2015 16:05:01 GMT -7
I would take De-Oxit and clean all of the input jacks and effects loops jacks.
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Post by Eddie on Jun 21, 2015 16:54:36 GMT -7
Sounds like power tubes to me.
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mika
Full Member
Posts: 182
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Post by mika on Jun 21, 2015 17:18:35 GMT -7
Update.... I thought so too, so I swapped in a new quad of them and still the same issue. So Then I took my Tophat amp and plugged that head into the cab and Wham major volume loss. So its looking like my Z best cab is going wrong somewhere. Opened it up and there is no or seems to be no wires outof place.... perhaps a blown speakerI have no idea.... but its low volume and got a buzzy sound
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Post by Mostrummer on Jun 22, 2015 14:01:28 GMT -7
Same speaker cable both times?
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mika
Full Member
Posts: 182
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Post by mika on Jun 22, 2015 16:37:08 GMT -7
no, I tried two different ones.... so randomly when i had my cab apart it just started working again. full volume..... and has been fine for 24 hours... it must just have been a connection... but honestly looks fine all over.. Super weird
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Post by headshrinker (Marc) on Jun 22, 2015 16:41:00 GMT -7
Sounds like it could be speaker if your check of the speaker cable comes back good. Pull the leads to one speaker and try the cab. Then hook back up and pull the leads to the other one. Actually you can just pull one to disable the speaker. That assumes it is wired in parallel. Use the amp tap that is the same as the ohm rating on the single speaker.
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Post by simpleton on Jun 22, 2015 22:43:15 GMT -7
I strongly dislike oddities like this...
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Post by deltone on Jun 23, 2015 11:16:26 GMT -7
I'm going to throw this comment out. I had a similar thing happen to me at a gig a while back--loss of power. I immediately was thinking power tubes, bad cable, etc. What I discovered was that the cable between my pedal board and amp was not seated fully in the input of the amp. So, ensure that your plug is seating properly and remaining fully seated in your input jack. Check all of your inputs--guitar/pedalboard to amp, and both speaker cab inputs (to and from amp). I have noticed that I have some cables that have plugs that in some cases pop out just a bit after insertion as opposed to remaining fully inserted. I assume it's the shape of the plug not pairing up well with the prongs of the input jack.
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mika
Full Member
Posts: 182
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Post by mika on Jun 23, 2015 13:51:38 GMT -7
I would assume some weird cable issue too, often simple is the answer right.... But I tried multiple speaker cables and instrument cables and guitars... isolated it definitely to a top speaker or right speaker if flat. That said fired it up again today and Zero issues. I gig this friday and will definitely have my spare
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mika
Full Member
Posts: 182
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Post by mika on Jun 23, 2015 14:52:32 GMT -7
Ok played amp again now... looks like one of the speakers is not working. so one is completly blown. Not speaker torn but just not working anymore.
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Post by simpleton on Jun 23, 2015 23:17:40 GMT -7
Ok played amp again now... looks like one of the speakers is not working. so one is completly blown. Not speaker torn but just not working anymore. Did you switch the wires to ensure its the speaker and not the wire connection at the jack?
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