Should run a 1.5 capacitor. my amp handbook says i should run a 1.5 capacitor, i am finding it

Question

my amp handbook says i should run a 1.5 capacitor, i am finding it hard to find these at the right price and have found 2.0 size capacitors are more common and cheeper, would running the 2 farad rather then 1.5 capacitor make any positive or negative effects over running the size my handbook recomends?