Truss rod on acoustic

[Jeepwaco]

HI,

I just bought a nice semi-acoustic bass for a very decent price and it really sound great but I can't seem to find a truss rod ajustement on it, is there such a thing as a bass without any truss rod or truss rod adjustment?

The bass is a Baron acoustic 4 strings..

Thanks for the feedback

 

[scottyd]

Look in the sound hole up towards the heel of the neck it may be in there.