I recently purchase a LG LHB335 BluRay all in one surround sound home theater system from best buy . the center and right rear speaker emit a whistle noise that sound like a teapot when boil . not quite that loud , but enough to be a very undesirable noise in a new unit . I take the first one back , bb give I another . same thing . then another . same thing . I have connect it to another location with speaker wiring and a monster power supply and yes , it do the same thing ! I call LG and they say they have no report on this problem , but when a search be conduct , many people be complain . until this issue be resolve , I would suggest not buy this unit ! EDIT -- more detail : the lhb335 have a horrible `` Tea Pot '' whistle noise emit from the center speaker . it also come from the right rear speaker at time . it be so annoying that I take it back to best buy . exchange for another and same thing ! I relocate the unit on a different electrical circuit and that do not help . buy a expensive monster power supply due to best buy recommendation which do NOT help at all . they ask I to try unit # 3 and it also have the same noise ! to make sure that it be not just a building electrical problem , I install it in a friend home . same issue ! I call LG to discuss the problem and they say they have no report of such a problem . that be not true . the internet have many comment regard this speaker noise issue . after talk with some friend , they too have return unit with the same problem . I really like the feature of the lhb335 , but will not buy another one unless LG can assure I that it will be one that do not whistle ! Edit -- even more detail : 2\/24\/2011 -- with all of the positive comment I have see post , especially with claim that the noise have be fix in unit manufacture after June 2010 , I think I 'll try another one for the basement game room . the price have be come down drastically , and no wonder with all the bad pr , so I pick one up for $ 249 from Amazon . I receive the unit in a couple of day , set it up -lrb- I can do it very quickly since I have be through more than a few of these -rrb- make the tweak for input and presto ... no whistle ... however there be no sound at all !!! after turn it off and on a few time the sound begin work . but the sound would quit and then restart after 3-5 seconds . after talk with LG 's deplorable customer service group , they say , `` we have not have any report of that problem , send it to we and we will look at it . '' once again LG display horrible concern for they customer satisfaction ! so it be go back to AMAZON and I will never ever even consider another LG product !!!! so be forewarn ... LG do NOT mean Life be good ... it mean lot of grief !!!