[quote user="alpbaris"]Hi all, This my first post here. I am a basic all-in-one home theater user and planning to change it. I actually do not know much about hi fi or surround systems. I live in Turkey and I need your advice on setting a new system. I own a 42'' Sony Bravia LCD.I thought of buying a harman kordon avr 347 receiver and Harman Kordon HKTS 11 5.1 surround speakers as home theater. Since the receiver is 7.1 channels, I am planning to buy a pair of Bowers&Wilkins 683 loudspeakers to use the to listen to music. I do not really know if such a thing can be done. This bundles add up to 4530$ (about 2350 pounds). This is probably as much I can spent. Do you think a better system can be bought? By the way I really loved the look and sound of Bowers&Wilkins. Thank all of you for your help[/quote]
Using an AVR for 2-channel is tricky but possible. Those speakers would certainly improve over your current sound by a good margin, but at the same time I can also warn you of chaos ahead.
If you use those B&Ws as fronts, you have a mismatch in your HT. (A rule of thumb in an HT setup is not mix 'n' match brands). The sepakers you are talking about are very different sonically. Not only that they also use power differently. Though with the help of auto-room-setup you would be able to set them up to provide similar measurable output levels, you will not be able to do much about the tonal imbalance.
There certainly would be a way to go ahead with your plan, but that would be complicated.
My advice would be to sell your current speakers and buy another set which can do music in addition to cinema.