Iphone 14 Pro Max Speakers more quiet after week of use

Hello i am writing regarding my speakers on my Iphone 14 Pro Max which i got about a week, I was mindblown how good the speakers were compare to my older Xs Max fresh when i unboxed it. I love listening to music so for me even speakers are an important tool. Straight first thing i have done is that i set up the EQ to Late night to have the speakers even louder than stock default Iphone… After week of use light use i have noticed that the speakers have gone quieter by far like the base has dropped and it just sounds very empty than when i first got them out of the box. I am unsure whats causing this if its an Ios Update or if its dust or something? I have inspected the speaker holes on bottom and on top and they seem to be clean without any decree or dust. Has anyone had the same problem? I am unsure whats causing this but it bothers me because the quality now is not the same as it was when i first got the phone from the box.