Originally Posted by mark russ
Did the Def Techs have side-firing subs?
Each BP7006 DefTech has one 8" long-throw subwoofer coupled to two 8" infrasonic radiators. The 8" sub is on one side, the two 8" radiators are on the opposite side of the tower, driven by a built-in 300-watt digital amp. Quite a spectacular value and I had nothing but complements with that setup, seemed to be the ideal pair for my Pioneer AVR.
Essentially, each 54 lb DefTech had 300watts dedicated to strictly powering the subs and 130 watts from my AVR dedicated to the midrange and tweeter. Each inefficient & power hungry Revel Studio2 has 130 watts x 2 channels (bi-amplified) to drive the midrange, tweeter, and the two 8" subs. It feels like the Studio2 subs are getting like maybe 50 watts because they hardly move and barely put out any bass. Now 50 watts would be good for say, dimly lighting a closet, but for filling my 8,000 cubic foot ht room with bass, lol, it simply doesn't.
I would add an external 2-channel amp, but I’m such a noob that I'm not sure how I would go about hooking it up to my AVR as it lacks XLR connections. For a temporary solution until I get a new preamp/pro I’m thinking the XTi 1000 or XTi 2000
would do the trick. I also like the brand Rotel. I know Mark Levinson is the best match since that is what the designer tested them with, but I don't want to deal with 150 lb amps. Any tips on how to correctly integrate a Crown or Rotel amp with my Pioneer AVR and which amp would be the better choice for powering the Studio2s in stereo? I'm ready to order something today.
Originally Posted by Kal Rubinson
Mebbe but all one needs is a displacement of a few inches to go from a node to an internode in the room. That's what makes bass response so dependent on critical positioning and why there is often a conflict between optimum positioning for bass and for imaging.
I know you are a pro and have been reviewing since I was in diapers, in fact I just read a Rotel review
by you, but I'm afraid it's not that that simple in my case. My Studio2 subs are not physically moving, I mean they vibrate a little, but just barely. Even when I put my head a few inches from the Studio2 subs, the bass is truly faint. I place my hand at the port at the bottom of the tower and the airflow is nearly non-existent, which leads me to believe that the woofers simply aren't being driven. I'm hoping this is due to a lack of power perhaps?