Subwoofer boom is too much for me...

I take it from your post that you are only running one sub.  I know that many people advocate two subs, but I have had very good results with a single SVS 2000.  Plenty of grunt when called for (by a movie typically) but pretty invisible in supplementing the bass response of my La Scalas, which are not known for great bass.  

Either you've got the wrong sub-woofer, else it's in the wrong place in your room or you've got it turned up too high.

Sorry for so many options, but I've got all the basses (ho ho) covered.

This has worked for me every time I’ve set up a sub, whether it be REL or another brand. The idea of keeping the crossover as low as possible while volume high was tough to swallow at first, but now makes sense.

A horrible compromise at best and only recommended if you can do nothing about the response of your mains. Meaning, no high pass filter and won’t/can’t plug your port.

Many A'goners have gone the other way and been much happier.

Spend $10k on dsp, bass traps, diffusers, and absorption. Or, get a pair of athletic socks, ball them up and stuff them in and send me the $10k.

Also think placement then crossover setting/gain key. Perpahs four is too many?