Brass screws make a real difference on Dunlavy s ?

FWIW I'd call tightening things up maintenance and changing screws a tweak.

The difference is the first is very well likely to result in an audible change to the sound whereas the second is a tougher call, especially if things were not nice a tight to start with.

Not much more to it than that unless someones is still sure the difference they hear/heard is due to changing alone.

I don't think there's any doubt about brass screws sounding better than steel ones. It's not like there hasn't been tons of discussion about this particular tweak for years. Get with the program.

From what I recall about this subject from a few years ago is that brass doesn't resonate as much as steel. Hence their popularity as footers and speaker points and such.

The good news about brass screws is that they are still dirt cheap by audiophile tweak standards. Also they won't rust, though they will tarnish. SO I always tend to prefer them no matter the application. One can go to Home Depot and gorge on them for next to nothing. Nothing to loose really no matter what the sonic effects may or may not be. Just get the right size and thread pattern of course and do not over tighten.

If you have a rust problem in your audio room, you have way more important things to worry about than buying brass screws... like putting a roof on it. Rust is a non-issue in this application and is no reason to replace steel hardware with brass, unless you live on a boat.