Sound bar for Dialogue


What is the best sound bar priced less than $500 that will help to understand dialogue on tv shows.  We have to frequently use closed captions to get the words on some shows.  I do not have such trouble understanding words on my audio system which is in another room.  Thanks.
rdoc
I use ZVOX and it is so much better than the TV’s built in speakers. The ZVOX has multiple tone controls including those for bringing forward the ’speaking’ range’. They have multiple models and are inexpensive.
Thanks, Newbee.  Can you elaborate on the best model for dialogue, or are all ZVOX models great for dialogue?  I am using bookshelf speakers which are an improvement, but still some programs have dialogue that is less than clear at times.
Thanks, auxinput.  Given that my tv is in the living room in an entertainment center, acoustics could be the problem.  But wife acceptance factor does enter in.  
Sound absorbing panels worked best for me. The more drivers you have, the harder it will be to get the clarity you desire.
I always agree with having appropriate room treatment as being essential for clarity and tonal balance.

Still, I think having a sound bar is such a great feature to simplify a high system which shares space with the TV.