I disagree with this, especially when it comes to pickups.
You can have one guitar that sounds fine with a particular pickup, and stick it in another and it sounds like ass.
Case in point; I had a customer that bought three new guitars and wanted me to swap pickups around between them. We ended up with a Duncan Jazz taken out of an Alder bodied guitar. In that guitar it sounded as you would expect.
The pickup ended up in my parts box. I had a basswood FirstAct GarageMaster a friend gave me. Nice guitar, but the stock pickups were crap. So I stuck the Jazz at the neck. In that guitar the Jazz was very boomy sounding. It had this very prominent low wolf tone. You couldn’t play the pickup without rolling all the bass off on the amp.
But in the alder guitar it was fine.
So I ended up winding a pickup with mismatched coils, using two different wire gauges. That eliminated the low end bump, and now the guitar sounds great.
Another example: take a Les Paul and an SG. With the same pickups they sound very different.
Wood is not a material that’s all the same. Depending on the density and weight it will have different energy absorption qualities. Wood works like a comb filter.
This is because of the loss coefficient of the material. The softer and lighter the wood, the more energy from the strings gets absorbed by the wood (as vibrations).
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