Re: Check out this "tonewood" statement . . .
Re: Check out this "tonewood" statement . . .
The reason why a heavy Les Paul has more sustain than a banjo is precisely because the body has a lot of mass, so the energy from the strings mostly stays in the strings. It’s a mechanical impedance mismatch. That’s a low loss coefficient. This produces a long sustaining note, but very little acoustic output.
Now look at a banjo; most of the energy from the vibrating string is transferred into exciting the drum head. You end up with a loud acoustic output, and almost zero sustain. This is because the strings lose vibrational energy to the head. When the energy is gone they stop vibrating.
That's because the bridge is mounted to a membrane that is 100th of an inch thick in a spot no where near the fundamental, second, or third harmonics (i.e. more destructive than constructive interference). Compare this to a 2.25" thick Les Paul which easily has at least 300 times the mass of a banjo membrane, meaning that the bridge dampens a considerably less amount of the string's vibration decrement will be considerably less than a banjo. This decrement is by it's very nature logarithmic, which is why replacing a the membrane on a banjo to something more rigid can easily make it sustain twice as long, but doing the same thing with a guitar body will have a considerably less obvious effect. It's also why, all else being equal, two acoustics with different woods will have vastly different tones, two ES-175s with different woods will have a less substantial difference, and two Les Pauls will have even less.
To put that all in layman's terms, the difference between two species of wood in the same guitar is quite a bit less extreme than a banjo versus a guitar, but you guys (or at least guy, I doubt too many people read this far into this post) already new that.
Now given that already small acoustic difference is transformed into an electric signal through pickups, which even at their best are the opposite of transparent, the question is "Is this difference noticable, and if so is it substantial?". And that's before the tone gets colored even further by effects, amplifiers, speakers, and microphones.