Help diagnosing Shuttle 6 Pre-Amp
Help Diagnosing Shuttle 6 Pre-Amp
I resoldered the major caps, all of the solder joints on the vacuum tube pcb, and the input and output ports. That doesn’t seem to have fixed the clipping, but the output did have a hole in the solder joint, which could be an issue, and I cleaned up some crappy solder joints on the vacuum tube pcb with holes too.
It could be an EQ thing where it’s just not going to sound right unless you play with a bass since it’s optimized for lower frequencies - that’s my main thesis as of right now. I do notice playing all higher notes on the bottom three strings the noise fades away really fast or clips, as does the same thing on the entire upper side of the fretboard so I think this one is likely.
If you keep the gain all the way up and volume low you can make playing with a guitar sound bearable, but it will clip on the highs and you will get that background distortion/rumble behind it no matter what, to varying degrees - mostly when hitting multiple strings and on long notes the sustain doesn’t seem right, but again, maybe EQ is to blame.
It’s also way too loud to be pleasant through the headphones unless you turn down the volume via the headphones themselves, I find that odd.
I do notice the input signal seems to be off, like I mentioned the his will cut off; the lows do too at at a lesser rate - but it will come in and out during long sustain notes, cutting off slightly early it seems. Not sure if it’s an EQ thing as mentioned.
I noticed some oddities with the input signal by listening and watching the light. The input light flickers as the sound cuts off - which could indicate a bad port input port, if, again, it’s not an EQ thing.
So perhaps it could be fixed with a new input port?
Help Diagnosing Shuttle 6 Pre-Amp
I resoldered the major caps, all of the solder joints on the vacuum tube pcb, and the input and output ports. That doesn’t seem to have fixed the clipping, but the output did have a hole in the solder joint, which could be an issue, and I cleaned up some crappy solder joints on the vacuum tube pcb with holes too.
It could be an EQ thing where it’s just not going to sound right unless you play with a bass since it’s optimized for lower frequencies - that’s my main thesis as of right now. I do notice playing all higher notes on the bottom three strings the noise fades away really fast or clips, as does the same thing on the entire upper side of the fretboard so I think this one is likely.
If you keep the gain all the way up and volume low you can make playing with a guitar sound bearable, but it will clip on the highs and you will get that background distortion/rumble behind it no matter what, to varying degrees - mostly when hitting multiple strings and on long notes the sustain doesn’t seem right, but again, maybe EQ is to blame.
It’s also way too loud to be pleasant through the headphones unless you turn down the volume via the headphones themselves, I find that odd.
I do notice the input signal seems to be off, like I mentioned the his will cut off; the lows do too at at a lesser rate - but it will come in and out during long sustain notes, cutting off slightly early it seems. Not sure if it’s an EQ thing as mentioned.
I noticed some oddities with the input signal by listening and watching the light. The input light flickers as the sound cuts off - which could indicate a bad port input port, if, again, it’s not an EQ thing.
So perhaps it could be fixed with a new input port?
