I have a Tacoma Thunderchief which is a very good acoustic bass. Also the loudest of all I have tried including Taylor/Martin/Breelove/Kelly etc.
I like to play mine unplugged.
The Elixirs on it now sound OK and are loud enough. It is just, well.......they sound " guitarish "
And flats sound to dull [ unplugged ].
Is there a string in between the Elixir and flats, tone wise that will be loud enough? Keep in mind this is all about UNPLUGGED. The flats sound fine amplifed.
Thanks much