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I don’t believe 2 all maple necks with all variables equal except a few mm of front to back depth could be differentiated in a blinded listening test (on the otherwise same electric guitar). That’s snake oil to me. Like I said, if the player “plays” better on one as he prefers the dimensions, that’s a different thing.
The scientific method gets shunned as much as it would on a religious forum.
I should probably just ignore it since there's a lot worse people who shun science do than needlessly modifying a guitar.
Try it for yourself - when the two guitars sound noticeably different in the first place, obviously if they sound close to the same it probably won't make much difference.
If it's snake oil then the 'good' body will keep the good sound and not the 'good' neck.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
The pickups and amp will trump all of the above (provided we’re talking solid bodies). Your example of scale length making the difference is a separate topic.
I'm not talking about the difference a few mm makes - it's the difference in resonance between two different necks, even if they appear to have identical measurements. Changing the dimensions *as well* makes it even more certain that they won't be the same.
For one thing, a quarter-sawn neck is *much* stiffer than a flat-sawn one of the same dimensions, and you haven't even mentioned that... but stiffness is one of the major contributors to resonance.
I don't disagree, but that's not what we're talking about.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Try a Custom Shop 50's Nocaster with the vintage correct big U profile - Then the same guitar that has been spec'd with a slimmer 60's C profile, spec'd so it is easier to handle - The former has a bigger tone - The difference is very audible
As for the scientific approach - As a big overview, most classic guitars have never been designed from the ground up, certainly not by any CAD/CAM process - They have evolved, as required, from an early model that was already in existence, as players demands and changes in music styles equally evolved - ie the big bodied 'archtops' of the 40's and 50's to the slimmer 335 design, as rock n roll arrived and the guitarist wanted to be louder without feedback - Trapeze to stop tail - P90 to humbuckers - Certainly most/many/all changes in the 40's , 50's and 60' s were based on changes that players required - Today such models and changes still influence the market today
The arch top guitar was essentially influenced by the violin and the mandolin - The 000, 00 and D series Martins evolved from the classical guitar etc - No scientific measurements or design as such - All guitarist requirements based on feel, tone, ease of performance and the requirement to do a 'better' job - The 12 fret acoustic to 14 fret acoustic evolved as guitar players wanted further access to the top frets, as per a banjo player
You can make a strong claim that the Telecaster was designed from no previous model
In the above I say no scientific design etc - But I dare say lots of prototype, trial and error
I agree that tone doesn't correlate directly with neck depth - I never said it did. But if you think that different necks don't sound different on the same guitar then you're just wrong .
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
If you played a guitar then swapped the neck and played it again you are comparing your (completely biased) perception of what it sounds like to your memory of what you remember your perception of the sound of the previous neck.
The scientific method is to overcome the problem of humans being as influenced by biases as much as they are by reality. E.g. A blind test sound recording of the of the two guitars playing the same thing a good few times and if the test subjects can identify the correct neck every time, or at least nearly, then we know the difference is really there. If they don't then it shows that when they think they can hear the difference when they know what neck they have it's really just expectation bias.
There could be problems with the test like the neck shape making the player play differently so would be more difficult than, say, pickups where the test subjects could even play the guitars themselves.
A lot of people are completely unaware of how much our perceptions are influenced by many things other than what is actually there so they naturally believe that they hear things because they exist - it makes sense to assume that before learning otherwise.
I think there are maybe also people who dislike the idea of scientific proof; they prefer the arty mystical/magical world rather than the cold logical truth of evidence.
That's probably why I should just let it go and let others believe what they want. Only really clarifying what I mean.
The pick-up effectively receives the signal from the string - How it vibrates and many other factors come into play here, that all influence the final voice, before the pick-up comes into play - Agree the final package is the sum of all the parts - And yes part of it is marginal gain
But I don't see it as an argument, just my thoughts based on being in a fortunate position where I've played, sold and heard many guitars - But I'm not the be all and end all on it either - But if you don't notice it or hear it, then that is fine and all thoughts are respected - I recall a similar topic of chat with a customer who told me 'I'm glad I don't notice or appreciate any such marginal differences, as it has saved me £2000'
I have actually once, but thats irrelevant (as is you're own example) due to the bias and lack of scientific rigour applied to the "test". As a professional scientist I have some understanding of the process!
There is a lot of chat about wood types, scale length etc here. Similarly, the example of guitars4you comparing 2 different nocasters with different neck specs is flawed as (I assume) these were actually 2 different guitars, potentially with different pickup winds etc. The way guitar design evolved is fascinating but proves nothing really.
The original question was whether thicker necks influence tone. The scientific null hypothesis, as a basis for a proper blind test, would be that neck thickness doesnt influence tone in a measurable way.
If you really think that the difference between a quarter-sawn and a flat-sawn neck isn't relevant, then I don't think you understand how much the neck of a guitar vibrates when it's played - and this is why necks don't all sound the same, since no two pieces of wood actually have identical grain structures. If they were made from a uniform material like metal or some sort of plastic then they would.
I have never said that the thickness of the neck has a direct correlation with the tone - I'm sure it doesn't. But I'm completely certain that different necks even of the same basic construction and dimensions do sound different, and if you wanted to test it scientifically then you would find it to be so.
I'm not a mystic believer in tone magic either.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
I've known similar tests via my Dad - A sax + clarinet player for over 70 years - And they will talk, discuss etc the merits of a wood clarinet v plastic - And on an A v B test always easier to tell when you are playing it
Some differences are more subtle than ever - As an overview I don't think you get the best tone from any guitar if you are not comfortable with how it feels and plays - If it is a fight to play it, then IMO it does not enhance your performance - Hence tonal quality suffers
It’s why shredders feel at home holding tiny necks and play like they're trying to compensate for something whereas smirking nocaster players like me don’t have to impress anyone and we know it.
I reckon that’s about as scientific as it gets...