puredrifting
Major Contributor
Um.... you do realize that you just bought another shotgun mic, yes? According to AT the AT875r is "Audio-Technica’s shortest shotgun microphone". Those slots on the sides are the interference slots (why they call them interference tubes). See how similar they are to the same slots on the 416? These slots are what make the mic more directional, and are also the cause of artifacting from so-called "rapid reflections".
The AT875 is not a hyper. It's a supercardioid-based shotgun. It's going to have the same limitations as an interior microphone as the 416 has. Just sayin'.
That said, the AT875 punches well above it's weight class, it sounds surprisingly good. Now that you have it, you can still consider selling the 416 and buying a good hyper, like the AT4053b, the Audix SCX1-HC, or better.
I totally know what the design and specs say, but I have been shooting with mine for years in all kinds of crazy interiors and have only had room reflection issues once or twice. I think it may have to do with the overall length is so short that even though it is technically a shotgun, the resulting polar characteristics seem to behave more like a carioid variant sometimes. Mine sounds great for 90% of interiors.