Change in Sound Quality

Now that I have completed my broadcast, I want others to get feedback on what they thought about it. I've played it to a few people in my class including the members of my group however I had noticed that it sounded different to how I created it.It was different whilst listening to it through headphones where as I have been playing it to others through speakers. The sound quality through the speakers is different then through headphones so it will not sound exactly the way I created it when it is played outloud.