If you bought a pair of Vandersteen 2wq's, you would not only get those bass notes, but your amp would be freed from having to reproduce those power draining low frequencies.
And, they will integrate seamlessly with your speakers. So, for $2K used, including crossovers, you'd be set.
I just googled the Rel subs, I don't see 512, did you mean S/512's?
If so, then you have the budget to buy the new Sub 3's. They have built in equalization.
Another reason to think of Vandy's are the build quality. Many of his 2w subs still work after 20+ years. I know, I sold mine only a couple of years ago.
Bob
And, they will integrate seamlessly with your speakers. So, for $2K used, including crossovers, you'd be set.
I just googled the Rel subs, I don't see 512, did you mean S/512's?
If so, then you have the budget to buy the new Sub 3's. They have built in equalization.
Another reason to think of Vandy's are the build quality. Many of his 2w subs still work after 20+ years. I know, I sold mine only a couple of years ago.
Bob