wallop

Sorry for reviving this post again but I still have the issue, even after a warranty replacement. It seems just to be a bad build quality overall. I added a bit of an aluminium wrapper on the right speaker towards the lower part (where probably the AMP is located) and it reduced the high pitched sound quite a bit. The strong hissing is there nonetheless, nothing I can do there apparently.

Hello, I’ve recently got into this whole audio world and bought some Klipsch speakers. More exactly I am talking about a pair of R-51PM and the R-100SW subwoofer. All good with the subwoofer but I am having some issues with the speakers. There is a hiss when they are turned on (not sure if this is normal). This hiss is also present in the right speaker when the speakers are turned off (it is very faint though, I have to place my ear right on the horn) and there's nothing plugged in them (except for the power cable of course). Besides the hiss, when I turn them on - there is a strange pitched sound coming from the left speaker (some sort of high constant frequency). For the sake of eliminating the variables I tried the following: 1. Turning off all devices from around the speakers 2. I have moved the speakers in different rooms and sometimes the pitched sound goes away but if for example I move the speaker a bit or just lift it off the ground, it comes back again Could it be related to grounding issues? I am really lost and I've bought these speakers just two weeks ago and the experience wasn't a good one. (but I really love how they sound).