Re: Pickup placement,so what's the deal?
I know some guitar players want to believe the world is flat, but here are some cool applets that explain the physics of pickups and placement.
http://www.till.com/articles/PickupResponseDemo/index.html
Wow, that's a cool applet. Thanks for the link. I would, however, preface it with this link as it better explains the purpose of the applet and why it was created:
http://www.till.com/articles/PickupResponse/index.html
That's a great article with a lot of depth. I could stand to read it a couple more times.
With that said...
With the applet, I was able to emulate the hypothetical "5 fret guitar" I was talking about in a previous post. I wish the applet was linear instead of log as it made it harder for me to interpret, but oh well.
Anyway, what I found is that as a pickup is moved farther away from the bridge, the fundamental gets louder. Since the fundamental is the lowest hz of all of the harmonics, with it being emphasized, the tone takes on a bassier character. As I had hypothesized, the pickup will continue to sound bassier as the pickup is moved closer to the center of string length. With a pickup placed at mid-point of string length, the fundamental is at max volume, so it would sound most bassy/neck-ish. Once the pickup is moved past the mid-point of string length and gets closer to the nut, then the fundamental starts to decrease in volume. So the other harmonics would continue to become more prominent...just like when the pickup is placed closer to the bridge. So I still align with my prior "guess" in that the tone would start to sound more like a bridge pickup. WGTP, do you agree with that?
Now, notice I was talking about harmonics in that last paragraph. While in a previous post I said that "all the harmonics stuff is bullocks". I reckon I need to answer to that. When I made the bullocks comment, I was talking about how people have said that the neck pickup on a 22 fret guitar is "perfect" because it lies below the second harmonic. THAT IS bullocks because when you fret a note, that pickup is no longer below that new note's second harmonic. The article and applet go into great detail on that.
So what it really comes down to is this:
Pickups are generally in fixed positions on most guitars (there are a couple guitars that DO have moveable pickups, but that certainly isn't the norm). The closer a pickup sits to the mid-point of string length, the more the fundamental will be emphasized, so the tone will be neck-ier/bassier. That applies to EVERY fret because the pickup doesn't move. On a 22 fret guitar (as compared to a 24 fret guitar), the neck pickup will ALWAYS be closer to the center of string length no matter what note is being fretted (or played open).
So in summary (and Varg will probably have a seizure over me saying this), it is the same as I've been saying all along:
The closer a pickup sits to the note being fretted (or played open), the "neck-ier" the tone will be. With the caveat of the "going past the mid-point of string length on the nut side" matter brought up in a previous paragraph. But I don't know of any electric guitars with a pickup placed on the nut side of the center of string length, so that matter is merely academic in the context of this discussion and doesn't have real world application.
Edit: After thinking about this, I think I had some flaws in my logic because when you fret the 22nd fret on a guitar, the bridge pickup is actually closer to the mid-point of string length than the neck pickup is. So I am going to reverse my statement on the "5 fret guitar". I now think that hypothetical guitar would sound even more neck-ish. The applet link actually discusses this matter in the "Symmetry" section. The bottom line is that the frequency response curves are very different. If WGTP or anybody have more to add, I'd be very interested in your thoughts. But right now my brain is fatigued on this topic and I'm gonna give it a rest for today. 