Sorry if this has been discussed already but…
I’m eyeing my first neck-thru, a Carvin LB75, and my concern is,
it’s a sight-unseen no return deal.
It made need some work and I can handle the electronics issue if any.
If a bolt-on is twisted, simply replace the neck, which is why I’m a big Fenderish fan.
Parts are plentiful and often a bargain.
So what problems or concerns would you have about buying a neck-thru sight unseen?
Also, if you want to share your opinions (pros and cons), (positive or negative),
about neck-thru’s please share.
057912
The main drawback to a neck-through you've already alluded to - any problems with the neck endanger the whole instrument if they're beyond repair.
In my experience maintenance, modification and repair are the only real issues with neck-through vs. a bolt-on. For example, 99.0044% of all fretless basses on the market are made incorrectly (including the superb Carvin basses, of which I've owned several) - they're simply a fretted model without frets fitted and no other changes anywhere else on the bass. So, none of the dimensions are correct for the lower string height due to the missing frets. The nut has to be cut too deep, the bridge runs out of downward adjustment before you can get the action suitably low on one or more strings, and sometimes you run out of downward adjustment on the pickup height.
On a bolt neck, this is easily fixable by adding a shim in the neck pocket (and slightly longer screws if you want to be super meticulous, and you can find any a couple mm longer) to move the fingerboard to the correct height. Most of the time you can just tolerate it and it's not much of an issue (on my Fender fretlesses for example), but if you really want the instrument setup really well, shimming the neck corrects a multitude of sins on a "conversion" fretless. You still have the problem at the nut, but everything else is immediately fixed. I did this to my older L2000 FL and it worked great.
This isn't an option on a neck-through.
Other than that, I can't think of any additional disadvantages over a bolt-neck.
That's putting aside the endless argument about tone differences, appearance, ergonomics, etc., that have no resolution or conclusion in one direction or another.
L