The difference I can hear from 80hz on my new Sherwood and 90hz on my old Sony is minimal if any...

If 90 is as close to 80 as you can get, set it and forget it...

But listen to the setting above and below it, one may sound better to your ears in your situation...never know till you try.

My .02,

WhatFurrer


"Meddle not in the affairs of Dragons, for you are crunchy and good with ketchup..."