Hi All. I currently have a NAD av receiver with a Boston sub and two Wharfedale bookshelf speakers. I'm looking to add surround/rear speakers to my set-up. My wharfedales have 89db sensitivity and I currently run the sub cross-over at 80hz. (the wharfedales can go as low as 40hz). Due to aesthetic considerations (all us gentlemen need to adhere to) I'm considering small satellite speakers to the likes of Boston's Soundwire speakers. These are very small speakers that basically fit the palm of your hand, but is very versatile in terms of fitment. They have 85 db sensitivity and have a range of 150hz - 20khz. I mainly listen to music and live music dvds. I have the following question. What would the impact be if I listen to music, but the front speakers only cross-over to the sub at 80hz, but 150hz for the rear speakers, will the overlap cause issues? Will the lower sensitivity of the satellite speakers cause issues with the balance of the sound - front vs rear? Would you recommend this pairing at all? thanks in advance.