REL S510 or S812

Can you feel the bones in your ears rattle?

Is your SVS 3000 a sealed enclosure or ported?  

I have two S/510.  They have more than enough output for accurate music reproduction, but they aren't quite enough for loud explosions, etc for home theatre.  I use a third SVS 12" ported sub for that.  The REL S Series is really more about accuracy than output volume.

I've never tried to crank the S/510 beyond what's needed for accuracy.  I would imagine that with the right type of music and cranked up, they would get pretty loud. 

SVS is sealed. Great sub.

Leaning toward the 812 at least I’d say.

In the S series, I'd say you would want the 812 given your requirements.  Two are better than one for two channel, but that gets kinda pricey. 

My SVS sub is a PB12-nsd. It's only a 12 inch, but it's pretty big. It will shake the house. It's ported. 

bjesien

I can make the walls rattle if I want😁

I thought i would give you some context as to why I love the sub.  My speakers are Paradim 120H's which have 3 powered 8" woofers that claim to have an off axis response down to 20hz. They have fantastic bass. ( great speaker) Anyway,  my 812 crossover is set to about 30hz and the volume is only 4 or 5 clicks up.  So it basically just fills put the bottom end and expands the sound stage. If u want to impress the neighbors or buddies with some techno or hip hop, crank it half way and Holly crap!!! Tight and controlled.....Bad Ass.... Im sure there are other great subs out there but that's my 2 cents. 

Good luck