Questions that need answers asap

hey guys i have a question, my old train horn set up was using i believe either 3/8" or 1/2" fittings on the tank. this set up was pushing out about 120 psi to the horns. I orderd a new pump and tank and it looks like the fittings are 1/4", at about 150psi to the horns. i guess my question is how will this effect the performance of my horns if i have to use a smaller hose?

What horns do you have. If its k or p series you need a half inch port for the horns. Otherwise they will not be near as loud as they should be.

Horns sound at 80 psi. You need air volume for them to sound good.