bass bar types ?

[Adrian Levi]

I have another question that I want to throw out there about bass bars .

Surely a bass bar with the least amount of mass possible ( ie the smallest dimensions possible ) would be a 'better sounding' bar. Obviously a bar has to provide the optimal support for a top and so it has to have some mass , but luthiers are often talking about adding as few cleats as possible to cracks as not to add too much extra mass to the top ,in order to let the top vibrate to its full potential....