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Old 02-05-2012, 03:59 PM   #1
The jazz Man
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Over Trebley sounding amp

Hey,
Im having a problem with my Carvin XV 112. Its an all valve amp and I use both channels. 1st for clean sounds and 2nd for distortion with my Vox Tonelab LE. I run my tonelab into the front end of my amp and only use it for amp simulation and chorusing on my clean channel and just an overdrive for added boost on my dirty channel. Now, my clean channel sounds fine with the tonelab but when I switch to my second channel and kick in my overdrive the amp sounds really trebley. To add to that, the amp is kicking out alot less gain than it was yesterday. It is not my guitars causing the problem as I have ran all of them through the amp and the dodgy sound is still there. No EQ settings have been changed either. I find it very odd how one channel sounds fine and the other is playing up. Could it be a one of my cables??
Any suggestions??

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Old 02-05-2012, 04:33 PM   #2
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Od pedal? Or channel 2 od? If pedal, what kind?
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Old 02-05-2012, 10:00 PM   #3
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A modeling pedal may sound ok into a clean amp but I'm not surprised it sounds thin and shrill as a boost in front of a tube amp especially the louder you run it. You would probably be better off boosting the tube amp with a real OD pedal. You are basically running a boosted preamp into your tube amp. A SD1, Bad Monkey or similar low cost OD will get the job done just fine pushing your tube amp into overdrive. Just set it's volume at 75 - 100% tone at noon and start with the gain at zero and adjust up to taste.

Last edited by Riffraff12571 : 02-05-2012 at 10:05 PM.
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Old 02-06-2012, 05:00 AM   #4
The jazz Man
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Thanks... It's just odd how it's been fine up until now. Any ideas why this has only just started now?
If this is the case ill have to invest in an overdrive pedal.
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Old 02-06-2012, 05:21 AM   #5
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Tonelabs have a tenancy to crap out after a while of use. Try doing a factory reset it, worked after trying to troubleshoot a customers pedal once.
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Old 02-06-2012, 05:24 AM   #6
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The tone lab has a headphone jack, did you listen to it on it's own for your dirty sounds to make sure it isn't creating that tone? Maybe your setting got messed up like the amp type you are feeding (guitar amp/PA) or the cap type you selected. That would be the best place to check first if it's a sudden change because it sounds like an EQ shift in your setting. Did you try it through the other channel on the amp and get the same results?
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Old 02-06-2012, 06:26 AM   #7
The jazz Man
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Sounds like it always has over on the clean Channel. My cleans sound fine and even the factory preset distortions which I never use sound normal on the clean channel. Il listen through headphones tonight and see. Bear on mind though that I only use an overdrive on the dirty channel. No reverb, modulation Or amp modelling.
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Old 02-06-2012, 08:21 AM   #8
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Sounds like you need the age old solution to a bright amp... Some curly cables
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Old 02-06-2012, 10:14 AM   #9
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or a 50' guitar lead.
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Old 02-06-2012, 10:54 AM   #10
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Take the Vox out of the equation and use a proper boost.
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Old 02-06-2012, 12:10 PM   #11
The jazz Man
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Have been considering a Zakk Wylde overdrive. its just been so convenient having all my sounds in one place. Just made a discovery, the power supply cable is buzzing. time for a new one mabey?
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Old 02-06-2012, 12:13 PM   #12
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Possibly. Shoddy power could be the culprit. Try removing the Vox from the chain entirely first and see if that makes a difference.
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Old 02-06-2012, 05:14 PM   #13
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Quote:
Originally Posted by The jazz Man
Now, my clean channel sounds fine with the tonelab but when I switch to my second channel and kick in my overdrive the amp sounds really trebley. To add to that, the amp is kicking out alot less gain than it was yesterday.

What tubes are you running in the amp and how long have they been in there? This sounds more like a preamp tube going out than anything, my guess being V2.
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Old 02-06-2012, 07:26 PM   #14
The jazz Man
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Replaced the tubes not long back now with a full service too
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