Research for subwoofer

@kuttler, Do you have line (low) level (preamplifier outputs) on your receiver, integrated amplifier or preamplifier?

If not you"ll want to mention this during your search.

Thanks  for the heads up.   The Luxman has Pre out 

@kofibaffour 

1:48 smoothing

we sell a number of subwoofers  from

kef, Mj acoustics, Elac and a few others

you would get great results with an Elac Varo

DS1200-GB $3200 

this woofer goes low 17hz has very high output118db is compact 

and has a few major advantages over many other manufacturers

auto eq and a customizable parametric eq in a very convenient app

the woofer was designed by Andrew Jones so it is very fast and articulate.

Dave and troy

audio intellect NJ

Elac dealers

Good advice.  Talking to different manufacturers will give you even more info to help make a decision.  I’ve had great experiences with SVS.  Their customer service and support before, during and after the sal is excellent.  Buy, try for 45 days and return for free in the US for a full refund is a great way to test the sub(s) in your room, with your equipment listening to the music you love.  The only way to truly know and avoid buyer’s remorse in my experience.