Robert said:
Hey sceptic + see what Analogman says -
http://www.tonequest.com/articles/article21.htm (2nd last question)
Here's a "Dying Battery Simulator" article -
http://www.beavisaudio.com/Projects/DBS/
I am no engineer as you know, and as always, judge for yourself. The differences are subtle, but I think gain and fuzz pedals sound better with a carbon-zinc battery.
Guess I'll have to check out the battery effect for myself in my OD & fuzz pedals. Still smacks of mumbo-jumbo, but I suppose anything's possible. I just like to understand the scientific reason behind a perceived difference.
Now, the dying battery thing I have
no problem believing. The physical effect there is clear--dropping voltage level--and it's easy to understand that that is going to affect a pedal's tonal output.
Between us girls, I have to take much of what "AnalogMan" says with a grain of salt. Without a doubt, he is an extremely knowledgeable, experienced guy, and has forgotten more than I'll ever know about pedals. But keep in mind that the guy, in addition to being a master techie, is also a
salesman--he has made big business out of pedal modding. When you read comments like one pedal having more "mojo" than another, or making a TS sound "brown" because he used a couple of old carbon composite resistors instead of newer (and far superior, from the standpoint of consistency and low noise characteristics) metal film resistors--well, that stuff just smacks of snake-oil salesmanship to me!
The only way to know if this stuff really makes a difference is to do "blind" testing. The hearer shouldn't know what he's listening to, because the mind will play tricks on him. You begin to hear what you think you're
supposed to hear. This is just the nature of the human mind. Unfortunately, setting up such a blind comparison test is complicated and takes a couple of people to do it, so most of us don't have the luxury of running one of these tests at home....