Adding Sub to current system

I would absolutely use or attempt to experiment with a sub. You truly don't know what you are missing without the added weight of a few dB of 20-40 Hz. I have tried a REL sub recently with full range floor standing speakers in an upstairs room with dimensions that just won't support enough below 40 Hz. I found the REL integrated seamlessly with my room/system. REL recommends using the supplied Neutrik cable that hooks directly to your amplifier speaker terminals. This allows the quickest bass response and integration.

You have absolutely nothing to lose but some time. Get a used REL studio or strata on Audiogon and try it for a month or so experimenting with crossover and room position. If you don't like it enough to keep it, put it back on the 'Gon. REL subs sell like hotcakes in the used market. You won't lose a penny of your money. I'm betting once you try it, you'll keep it.

Hi Rpg,
My current speakers are flat to 40, I came across one of the decent velodynes used and picked it up. It is rated down to the low 20's. I put it right next to my system with a 15' cable. It was peeky, I slowly moved the crossover point downward starting @ 60. I ended up just below 40. I then moved the sub about a foot at a time toward the corner. I pointed it in, I pointed it out, I pointed in down one wall, then the other, I increase output, I have a phase dial and used it ever so slightly. I ended up with a very nice result. I've had a few audiophile over, none even knew that it is there.... until I turn it off... I can say without hesitation the differences are indeed minor, but clearly add to the enjoyment of the music. Good luck, Tim

No problem integrating one of the upper end REL subwoofers into your system. Once you do you will realize you are missing a lot.

One last point, my $ for a sub is limited to around $750, hoping to find something on Audiogon, am I wasting my time?

Rpg - If you go with Rel, depending upon which model you prefer, you might have to stretch your budget a bit. I can tell you that my Rel R-305 is a fantastic match for my Sonus Faber Guarneri Mementos. Someone has an R-305 for sale right now on the 'Gon and the asking price is ~ $150 above your approximate budget limit. I do not know the seller nor do I have any connection to the item for sale.