Sub. with full range speakers ?

It will ease the load on your main amp which should help with power hungry speakers.

I'd suggest only buying if you can get a full cash return after an in home trial.

In most cases it's a huge improvement. It just adds that bottom end--better foundation and the imaging in all cases I've worked with improved as well. The trick is getting the integration right. Rel in general is a good sub for doing that last bit--below 40 Hz.

Hello,
I have had subs in my main 2ch systems for the last 35 years. I have had different speakers in my systems over the years and always enjoyed the music more with subs. I prefer 2 sub instead of one.
I feel the subs add more depth, imaging and substance to the music. At the present time I run my main speakers full open and run a second pre out to a crossover to the subs.
It works for me. Good luck.
Joe Nies

just added a b1 to my B&W 801 S3 and the improvement was worth every cent - Soundstage and imaging improved dramatically. Interestingly the benefit seems to be greater when running the b1 from the speaker line via the Neutrik lead rather that from the line input. Great sub and by far the best Hifi sounding one I have heard for the $.