Hi guys , so I was away for the summer and keep my Vox combo amp in the box it came with. When I got back , I was busy but sometimes when I had time I played it and it sounds muffled. Sounds like the sound isn't coming from the speaker and it's blocked somewhere , like it's loud but it's not here at my ears. Lol I know it sounds like a mess but maybe I should play it loud for a week to clear the lazy '' fat '' ?

If it helps , it's humid over here in the summer and I was away for 7weeks.
take it out of the box

Epi Les Paul Std w/Duncans
Cry Baby From Hell
Marshall JH-1
EHX Metal Muff
MXR EVH Phase 90
Carl Martin Classic Chorus
EHX #1 Echo
Ibanez LU-20
Dunlop DCB-10
Crate V50112
Tascam US144