Question for Einstein owners

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bhuether

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I was wondering if some of you can do a test for me. Put the amp in Ch2 with gain knob cranked pretty high. Strum some chords (or double stops on d and G string) with pretty soft picking and then strum/pick much harder. Do you notice the tone changes dramatically? With my amp, there is a very clear difference. When I pick aggressively on Ch2 it seems like the tone takes on a more fuzzy, less articulate character (harmonics sound thin). I have never noticed this before. I have always loved the sound of the Einstein and think I would have noticed this if it was happening before.

I changed V2 and every other tube for that matter but it had no effect. I also checked the power tube bias and it was fine.

Ch1 mode 3 sounds fine incidentally.

Just looking for ideas. I really need to get this amp sounding to its potential.

I also have a VH4S and its high gain channel (Ch4) does not exhibit this behavior.

thanks,

brian
 
while on ch2, where is the mode switch in ch.1 at? (clean, texas or mega?)

I fing that the tone in ch.2 varies depending where that switch is possitioned.
 
I figured it out...

What I am hearing is power tube distortion. You can hear it if you turn the channel volume to 0 and crank up the master. Perhaps at low channel volumes and medium to high master volumes the power tube distortion mixes with the preamp distortion in an odd way (to my ears anyway).

I just checked the VH4S and noticed that its power tube distortion is much less fuzzy than the Einstein and it blends nicely with the channel volume. Overall an immensely ballsy sound. Very rich harmonics.

What is weird is that I used to prefer ther Einstein (balsly sound, rich harmonics) and so I am quite sure the Einstein used to sound much better than it does now. But I just swapped out preamp and power amp tubes and it isn't sounding on par witht he VH4S. What else besides tubes could have my Einstein sounding different than it used to?

thanks,

brian
 
Sounds like cross over distortion. Happens if bias is too cold. Maybe your quartett was badly matched like mine when I first got the amp. (Not Diezel fault, of course). I adjusted the Bias at 65mA for the pair and wondered why one of the tube was glowing red. Measured the bias of each individual tube with an adapter and I got around 15mA for one and around 50mA for the other. Summed up that gives you 65mA that looked ok when biasing the PAIR. Of course one tube was way too hot and the other way too cold.
Please check the BIAS again, maybe even with the adapter!
Best,
Stefan
 
Can you point me to a link where I can buy an adapter?

Right now I have it biased at 65mA. I bought the tubes from http://www.dougstubes.com and he says the tubes were matched.

thanks,

brian
 
I am in California and will hopefully be moving back to Germany in about a year.

thanks for the links.

brian
 
bhuether":289pcz1x said:
I figured it out...

What I am hearing is power tube distortion. You can hear it if you turn the channel volume to 0 and crank up the master. Perhaps at low channel volumes and medium to high master volumes the power tube distortion mixes with the preamp distortion in an odd way (to my ears anyway).

I just checked the VH4S and noticed that its power tube distortion is much less fuzzy than the Einstein and it blends nicely with the channel volume. Overall an immensely ballsy sound. Very rich harmonics.

What is weird is that I used to prefer ther Einstein (balsly sound, rich harmonics) and so I am quite sure the Einstein used to sound much better than it does now. But I just swapped out preamp and power amp tubes and it isn't sounding on par witht he VH4S. What else besides tubes could have my Einstein sounding different than it used to?

thanks,

brian
Click to expand...


Maybe it is broken, and you should sell it to me for really cheap :D
 
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