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Post by splatter on Jan 20, 2008 23:17:29 GMT -5
I noticed tonight that my nitro has a good bit of fizz in the tone. I compared it to the QR . in 2 different cabs . The fizz seems to get more pronounced when I turn the treble up .
Has anyone else noticed this ?
I was also wondering if anyone knows where scott has these biased . 60% or 70% .
When I had a tsl I was able to get rid of alot of the fizz by adjusting the bias . I may try that with the nitro also .
Any thoughts ?
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Post by windsen on Jan 20, 2008 23:38:20 GMT -5
the nitro has more saturation which can sound fizzy depending on the bias. i always rebias the amps up myself when i get them. i don't remember how scott biased the nitro when i got it since i just popped the tubes in and biased it to my tastes.
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Post by erock503 on Jan 21, 2008 1:26:12 GMT -5
what kind of tubes did you go with, and what combination of speakers/cab produced more fizz with it?
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Post by splatter on Jan 21, 2008 10:27:09 GMT -5
the nitro has more saturation which can sound fizzy depending on the bias. i always rebias the amps up myself when i get them. i don't remember how scott biased the nitro when i got it since i just popped the tubes in and biased it to my tastes. To me the nito doesn't sound that much more saturated . It is definately voiced different but it really doesn't seem to have that much more gain . I'm gonna try to rebias the amp . Do you know the power rateing of kt77's .. I know for el34's its 25 watts but I have no clue on kt 77's. |
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Post by splatter on Jan 21, 2008 10:29:26 GMT -5
what kind of tubes did you go with, and what combination of speakers/cab produced more fizz with it? kt 77's The speakers don't effect the fizz . I'm playing it through a splawn 4x12 with mow & gov in the x pat . also an avatar with celestion g12-h30 hellatones in it . |
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Post by supercharged350 on Jan 21, 2008 13:24:06 GMT -5
the nitro has more saturation which can sound fizzy depending on the bias. i always rebias the amps up myself when i get them. i don't remember how scott biased the nitro when i got it since i just popped the tubes in and biased it to my tastes. To me the nito doesn't sound that much more saturated . It is definately voiced different but it really doesn't seem to have that much more gain . I'm gonna try to rebias the amp . Do you know the power rateing of kt77's .. I know for el34's its 25 watts but I have no clue on kt 77's. There's a difference between more saturated and more gain. Scott will tell you himself that the Nitro really doesn't have that much more 'gain'. |
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Post by windsen on Jan 21, 2008 13:33:14 GMT -5
To me the nito doesn't sound that much more saturated . It is definately voiced different but it really doesn't seem to have that much more gain . I'm gonna try to rebias the amp . Do you know the power rateing of kt77's .. I know for el34's its 25 watts but I have no clue on kt 77's. There's a difference between more saturated and more gain. Scott will tell you himself that the Nitro really doesn't have that much more 'gain'. +1 |
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Post by Silverwulf on Jan 21, 2008 14:15:54 GMT -5
There's a difference between more saturated and more gain. Scott will tell you himself that the Nitro really doesn't have that much more 'gain'. +1 +2 It comes down more to how the how amp responds to your playing and "feels" when you're playing. The Nitro is more saturated ala a Boogie or something similar in that it has a little more "give" when you're playing, where as the QR is a little more stiff and rigid. Both are exceptionally tight, so it really comes down to preference and what you're comfortable on. The Nitro definitely doesn't have a lot more gain. |
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Post by splatter on Jan 21, 2008 16:23:34 GMT -5
yea ok I agree with that . I got my terms mixed up . I call it sag you call it saturation .  So does anyone know what the power rateing of a kt77 is ? I'm going to rebias my amp tonight to try and get rid of some of the fizz . I am assuming the power rateing is 25 watts since they are direct replacements for el 34s By direct replacements I meant that you don't have to change a resistor. |
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Post by windsen on Jan 21, 2008 16:24:50 GMT -5
yea, 25 watts.
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Post by splatter on Jan 21, 2008 16:36:14 GMT -5
thanks
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Post by splatter on Jan 21, 2008 19:20:39 GMT -5
I rebiased my nitro tonight . I brought it up to 65% it was set at 55 % .I was listening to it as I brought it up and I believe this fixed the fizz . I will know for sure later when I spend some more time playing it .
Thanks for the help windsen
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Post by windsen on Jan 21, 2008 20:17:35 GMT -5
glad to hear man. i set mine to around 65% too.
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Post by porkchops on Jan 21, 2008 21:58:01 GMT -5
Yo,
Can anyone give me a "how-to" on setting my bias. I know nothing about electronics so speak in dummy terms!! I have a Nitro with kt77's and have experienced that fizz.
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Post by splatter on Jan 21, 2008 22:36:45 GMT -5
I think there is a tutorial here eurotubes.com/euro-video.htm good luck and be careful you can shock the crap out of yourself if your not careful . |
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