I think that if you're comparing the 20" ASC trap with the Real traps in terms of absorption of low bass it would be no contest. The 20" trap would be a whole lot better. Are you sure you need 20" traps, you can probably get away with something a whole lot smaller. From all that I've read about the Real traps, they seem to be really good at deadening the room. That's why you see most users use real traps either in studio applications or position them in places where they really want to kill all reflections.
Anyhow. I'm no expert in acoustics so you might want to talk to Rives or somebody. I think with your room, 12" by 10" you said in another thread? You might need a room compensation device like the Parc unit.
Anyhow. I'm no expert in acoustics so you might want to talk to Rives or somebody. I think with your room, 12" by 10" you said in another thread? You might need a room compensation device like the Parc unit.