Default [Q] Front speaker during a conversation is very quiet

Hello, three days ago when I calling from my Galaxy Nexus I hear very queit sound from speaker and can't understand other people. I tryed down and up sound level from button and still sound from speaker is like 10% power of normal work. I change ROM with clean install and problem is still same, what I can do to test it? Is chance, the speaker was broken and need to replace it? Which is cost of new? Anyone have this problem with silent sound from front speaker?