Hi guys,
I would like to comment about what Brad, Geshel or Geoff have said about wood influence on the bass sound.
Originally posted by Fuzzbass
Thanks, geshel, this makes sense. I would nitpick on one thing: seems to me that the convex side of the neck (almost always the side away from the fretboard) undergoes more stress: bend a loaf of bread, and it will break on the convex side, not the concave. I suppose one could argue that the loaf might collapse on the convex side, but I've never known a bass neck to collapse (have I gotten too silly yet?
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In fact, the back of the neck is submitted to more stress. Many years ago, instruments builders were adding strong wood veeners to the back of their neck to reinforce them. This is also the concept used by parker with the carbon fiber layer that is laminated to the back of the instrument. However, I don't think that knowing this allows us to find if fingerboard wood has or not more influence on the sound that neck wood.
Back when I was a student I had a job in a bass shop where I did many blintests with customers. I had many peopole coming and telling me they wanted to buy a maple board stingray bass because of the better "slap sound". During the blindtest, no one was able to tell me if I was playing the maple board , or the rosewood one. Some times, I unplugged the bass and plugged it again, and I had people sayed...wow, the first one is brighter, this is the maple board!!! (in fact this was the same bass

sometimes with the rosewood board!)
This shows how, when it comes to sound, we are often ruled by what we think is true over what we really hear.
As Brad says, he can hear the difference between ash and alder bodied Jazz Basses but he has never done it as a blindtest. Just try to do so Brad...results can be very surprising
I truly believe that wood HAS a role to play in the overall sound. Pickups, even if magnetic, play the role of an human ear. Make an experience: Take a ruler, put it on whatever support you find, hanging on the air by 2". Make it ratle and you'll hear a sound. Now take the ruler on another support, place it in the same position (2") and you'll hear a different sound because it is not vibrating the same way. Bass pickups are catching differents sounds depending on the way the string vibrates. I think we all agree with that.
Given that fact, wood influence on the sound is difficult to measure because sepaking of electric bass, a greater part of the sound is coming from "pu type and position, strings and electronics".
Moving a pickup by 1/4" may alter the sound much more than using another fingerboard wood.
Two basses using the same woods, pickups, electronics, strings...may sound different. Two pieces of wood from the same log may be different and give a different type of sound.
What I feel very hard to do has a builder is to tell customers that a bass with A or B wood is going to sound brighter, warmer... How can I predict that the piece of padauk (yeah I love it too Dave !) I'm using for a new bass will sound the same way has the one I used for the same bass model a year ago? I think I can't!
I really like Carl Thompson's thoughts on woods and bass building:
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Apologizes for the long reply!
Peace, JP