Rokit RP7 G4 : Unusable as studio monitors because of noise

I had purchased RokIt 5's a few years back, but wanted some more volume for the sound, and yes, these have larger and louder sound. Initially I got b-stock RP7's, but they had bad hissing noise (even on low volume), so I had to get them returned and bought a-stock instead. Unfortunately the a-stock speakers suffer from the same noise issue, so I will need to get these returned as well. The old RokIt 5's have noticeable noise only if you move your ear very close to the speaker, but with these the noise is clearly audible even from a few meters away. These are unsuitable for studio work, maybe they could be used for DJ practice or something, but not for listening any recorded material, as the noise will hide possible sound quality issues of the recordings.