Couldn't agree more... I find my slab-bodied CV60s Mustang is the perfect shape for me to play easily and comfortably when seated. And I'm thinking any sculpted fancy contours would probably ruin this!
I have a Mustang bass with a contoured body and it's not as comfortable for me as the slab.
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I'm not sure that having some contours on the bass body would ruin anything for the seated player, but I'm also not sure that they would help either.
Of the two basses which I have played most recently on gigs :
IIRC, my Hofner Ignition Club bass is even more squared off at the edges than any of these Mustang basses, and playing it sitting down does not cause any discomfort to my midriff.
My Jay Turser JTB-40 short scale Mini-P-ish bass has some degree of contouring, and I do not really notice any comparative benefit [nor detriment] over the Hofner, in that regard.
What I HAVE noticed though, is that while both of these basses have a 30" scale, the
REACH for the fretting hand is quite different, as the bridge saddles of the Hofner are near the middle of the body, like a Les Paul guitar, and the Turser has them almost at the South end, like a P bass, thus making the position of the nut relatively different.
My left hand is significantly closer to my body while playing the Turser seated than for the Hofner, where the Hofner's reach is rather similar to my Ric 4001, which has a 33.25" scale, and bridge saddles closer to the South end of the body [though not as close as a P bass has them].
Circling back to Mustangs and possibly Broncos, I would speculate that the location of the bridge along the body would contribute to a person's impression of how they feel while seated, just as is the observation with my two basses mentioned above.
That said, each of those two basses of mine weighs between 5, and 5 and a half pounds, so this could reduce any geometric impact on the abdomen.
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