Human vocals have lots of harmonics, and it’s really the formant that’s so strong rather than freqs. It’s not really possible to EQ out a voice with a static EQ. The way to do it would require some pretty heavy processing and tedious work. I’ll attach a screen grab in a bit that illustrates.
For playback systems, I typically only use EQ to correct the room, so it’s typically subtractive EQ with fairly narrow bands to lessen nodes or prevent feedback if it’s a live setup with a mic.
You have to be mindful with additive EQ, as an untrained ear will hear more bass and louder highs and think, “awesome!” Only to later boost the mids because they are too low. If you flatten the curve and then turn it all up, you get the entire range. It sounds dull in comparison, because more volume always sounds “better,” initially. That said, there’s nothing wrong with using the EQ to make it “more awesome,” but if you’re making extreme adjustments or you change it often, thats a sign that something is amiss. I mostly give that little speech because it’s like a chef watching people put salt and ketchup on their $100 steak, ya know, I don’t like it when my content gets screwed up by some software eq. Anyway, to each, their own.
Back on topic, the short answer is no.