As far as the Tube Screamer goes, you can also try other distortion/overdrive plugins. There should be a lot. Also Guitar Amp/Effect Simulators can work well too, since they try to give you the kind of distortion vacuum tubes create. Also some Saturation plugins could bring out the needed harmonics, but they are harder to control since you need to hit their sweet spot.
It also seems to me that the linked overmind sound might be double tracked, but it could also be just the same voice underlayed with different settings or just the delayed voice.
from what i can hear, I think you need to low pass the dry voice a bit, it also sounds a bit like there is some slight overdrive/distortion on there. Also there is another effect that I heard somewhere, but i can't recall if I had that.
It's still a bit closer I think. Maybe it will help you get to where you want.
I created a lowpass at 3.3 kHz then I added a TubeScreamer (TSE 808 2.0) with a bit of drive and tone set to a rather low setting. With the TubeScreamer I artificially add the harmonics I cut with the EQ.
In the second one I added a Delay (Nasty DLA) I set the feedback somewhere around 12o'clock and the time to 60-80ms. Then adjusted the wet signals level until it wasn't too muddy.
As far as the Tube Screamer goes, you can also try other distortion/overdrive plugins. There should be a lot. Also Guitar Amp/Effect Simulators can work well too, since they try to give you the kind of distortion vacuum tubes create. Also some Saturation plugins could bring out the needed harmonics, but they are harder to control since you need to hit their sweet spot.
It also seems to me that the linked overmind sound might be double tracked, but it could also be just the same voice underlayed with different settings or just the delayed voice.
from what i can hear, I think you need to low pass the dry voice a bit, it also sounds a bit like there is some slight overdrive/distortion on there. Also there is another effect that I heard somewhere, but i can't recall if I had that.
I wasn't able to replicate it, but here is my try: Overmind 1 Overmind 2
It's still a bit closer I think. Maybe it will help you get to where you want.
I created a lowpass at 3.3 kHz then I added a TubeScreamer (TSE 808 2.0) with a bit of drive and tone set to a rather low setting. With the TubeScreamer I artificially add the harmonics I cut with the EQ. In the second one I added a Delay (Nasty DLA) I set the feedback somewhere around 12o'clock and the time to 60-80ms. Then adjusted the wet signals level until it wasn't too muddy.
These are all free vst plugins. TSE 808 - http://www.theserinaexperiment.net/software.html Nasty DLA - http://varietyofsound.wordpress.com/downloads/