Tried it out again today, and the sax sound is a lot better with three pressure plates in the bell – big difference in pitch

I used the ligature pressure plates from two old theowanne mouth pieces that i don’t use any more.

It sounds crazy but, 3 of those pressure plates placed inside the alto bell and it cleans up the tone.It must somehow trap all the extra faint partials present in a pitch from coming out the bell.