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Randall Solid State Amplifiers / Re: Randall T2 Volume Problem
« Last post by smoke on December 10, 2018, 07:28:17 AM »
I'm afraid you really need an expert to go through the whole circuit, to check all the components, pcb etc. so he can isolate and fix the problem.
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Randall Solid State Amplifiers / Re: Randall T2 Volume Problem
« Last post by KissKovers on December 10, 2018, 07:08:17 AM »
yeah mate, I recently changed ALL the tubes with new ones... same issue.
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Randall Solid State Amplifiers / Re: Randall T2 Volume Problem
« Last post by smoke on December 10, 2018, 04:15:48 AM »
Hey man, T2 has 4 (if I remember correct) preamp tubes. Is any of them connected to the loop and maybe gone bad? Just a guess, but also check these tubes as they are more prone to go bad than anything else in there and it's easier to check it yourself (just google how to check preamp tubes).   
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Randall Solid State Amplifiers / Randall T2 Volume Problem
« Last post by KissKovers on December 07, 2018, 07:34:36 AM »
Hey guys, in brief... here is the issue I am having with my Randall T2.

Everything was working fine for several months after buying this Amp 2nd hand... then all of a sudden... the volume started dying randomly... the volume faded in and out during playing for several weeks occasionally until eventually the volume was cut down to about 90% of what it was. I had to turn it up full just to get some decent volume for practising where as before... playing on number 1 was very loud. Took it to be repaired... the guy didn't seem to know the exact problem but said he re soldered components and it worked fine for about 1 week... then went back to the same problem as before... I just discovered  that when I press the "Loop on" button on the front... the volume comes back as normal with the volume controls set to high at the back... but the thing is... I never use the loop effects... I just have a guitar plugged straight into the normal input in the front of the amp. If "loop on" is off... very low volume on ALL channels... When "loop on" is ON... volume is as normal on ALL channels...

any suggestions? Is the circuitry screwed in the looping section or something? Would love some feedback before paying a guy AGAIN to take a look and probably NOT fix it... thanks...

kaddy
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General Discussion / rx412 vs. rg412
« Last post by Jesse442 on December 06, 2018, 04:03:57 PM »
Does anybody know if there is a speaker difference between the rg412 and the rx412 cabinets?
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Randall Tube Amplifiers / Re: Randall RD100 Tubes Change
« Last post by Ghostman on December 05, 2018, 09:05:43 AM »
Definitely change the preamp tubes. Every preamp tube will be different, so you should buy a selection and then "Roll" them through the preamp stages. Check out some more frequented forums on how to "roll" preamp tubes. Essentially, you just try each tube in different spots in the preamps.

Check out Tubedepot for some descriptions of how each preamp 12AX7 sounds compared to the others. You can find through that, which ones provide more gain, more bite, or smooth things out. It all depends on what sound you are looking for.

The differences most of the time will be subtle, so don't think it will be night/day differences. Preamp tubes are relatively cheap, at $10 or so for new preamps. Don't worry about NOS expensive preamp tubes for now.
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RandallBay / Re: RG80 PH head for sale
« Last post by JayCortez on December 03, 2018, 11:28:55 PM »
Das Wichtigste, was ich verstehe, ist, dass diese Website eine sehr kenntnisreiche Website ist, in der sehr viel Informationen ausgetauscht werden kann.
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Randall Tube Amplifiers / Re: Randall RD100 Tubes Change
« Last post by JayCortez on December 03, 2018, 11:27:02 PM »
Ich weiß, dass diese Site eine große Site zum Datenaustausch ist, also habe ich mehr Informationen recherchiert, um sie mit Menschen außerhalb zu teilen.
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Kirk Hammett Amplifiers / Re: KH-75 extension cab
« Last post by Elonmasx on November 28, 2018, 01:54:08 AM »
Like a story I've met in the past. I am impressed…
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Kirk Hammett Amplifiers / Re: thinking about one of these bad boys
« Last post by Elonmasx on November 28, 2018, 01:53:20 AM »
This can be viewed in a variety of views.
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