Bias trim on the English Muff'n?

[Nyarlathotep]

Is there one?

Currently recording some stuff, and I notice the waveform is bigger on the bottom than the top, and IIRC from my electrical stuff, biasing would be the first thing to chage.

[asherthemachine]

i noticed this as well. interested.....

[Nyarlathotep]

Seems to be a little worse on higher gain vs. mid gain settings, but not much. Gain at 0 is pretty much even, or at least the same balance as my bass, which seems to be top waveform heavy (just a little)

And EQ doesn't seem to make a difference on the Muff'n. I know on the grunge, if you cranked the treble past noon, started to do the same thing.

[Surly]

Interesting. Maybe a characteristic of the pedal?

[Nyarlathotep]

Maybe. I might open mine up and take some gutshots.

There is a small hole in the bottom of the casing and I can see a screw just behind it.....

[Nyarlathotep]

Gut shots. You prolly can't see much (), but It doesn't look like any trims in there. Or at least accessible ones. The screw on the bottom is part of a metal piece like the ones holding the tube shield, but its holding the main circuit board in place. Not something I want to remove







Im hoping that maybe the PP Versa will be able to power this thing. Its got a funky 2 prong AC plug for power, so I don't really know

[whoatherechunk]

what do you mean by "waveform"?

[Nyarlathotep]

When Im looking at it in audacity I usually just have it display as a waveform, and its bottom heavy.

Give me a min to get an example.

EDIT: here ya go:



The top one is unbalanced on the top (or +) side and the bottom is the other way. I didn't have any bass or gain in the top signal so Im not surprised that its unbalanced like that with just treble mids and prolly almost no compression from the tubes, but the bottom is with full gain and flat bass.

[RCCollins]

yeah i dont think you can use audacity as an oscilliscope

[Nyarlathotep]

Originally Posted by RCCollins

yeah i dont think you can use audacity as an oscilliscope

Maybe not a real time one, but as a general thing it seems to be fine otherwise IME

My clean tone came out balanced top/bottom

[cheapbasslovin]

Hrmmmm, I expected there to be more empty space in there. Looks like they may be able to make them a little smaller, but not much. I'm not getting rid of mine, though.

As far as the waveform thing goes, isn't that what they call asymmetrical distortion and can't that be desirable?

All I know is that mine sounds bad@$$ and I don't care what it looks like as a waveform. I don't wanna fix it.

YMMV or something.

[selfblessed]

Does it sound good? If so who cares what your wave form looks like after being recorded.

[Nyarlathotep]

Originally Posted by cheapbasslovin

Hrmmmm, I expected there to be more empty space in there. Looks like they may be able to make them a little smaller, but not much. I'm not getting rid of mine, though.

I was surprised a little to TBH, I almost like it better knowing that it has huge (IMO) caps.

Im assuming the black square thingy on the far right in the last pic is a rectifier

Originally Posted by cheapbasslovin

As far as the waveform thing goes, isn't that what they call asymmetrical distortion and can't that be desirable?

All I know is that mine sounds bad@$$ and I don't care what it looks like as a waveform. I don't wanna fix it.

YMMV or something.

+1

Originally Posted by selfblessed

Does it sound good? If so who cares what your wave form looks like after being recorded.

I was more just curious as to bias trims and all that. I wouldn't change the sound for the life of me

[scotch]

Originally Posted by selfblessed

Does it sound good? If so who cares what your wave form looks like after being recorded.

+1, Daniel, don't get caught up on how waveforms look in a DAW. About 40% of my income is from pro session work - I'm in studios almost every week (or in my home studio & traveling the rest of the time...). I've noticed the "unbalanced" wave form you are referencing a lot. Usually I notice it when I am using overdrive of some sort - but it really isn't a problem!

I assume you mean a "bias trim" in context of the phase of your signal- and no, I've never seen such a thing in a pedal. Don't get that confused with tube biasing, which only applies to power tubes and has to do with operating voltages...

[Nyarlathotep]

Originally Posted by scotch

Don't get that confused with tube biasing, which only applies to power tubes and has to do with operating voltages...

LOL

Well, I guess you do learn something everyday!

I thought it was just tube/etc. in general