Subwoofer for classical music listener

Al,

I'm using a Rogue Pharaoh integrated class D amplifier with a Vandersteen 2Wq sub. After reading this thread, I tried a little testing. When I turn the balance control all the way to the left while playing music, the sub sounds pretty much normal. But when I turn balance all the way to the right, the subs output seems somewhat attenuated. When balance is in the mid setting, all seems normal. Bass sounds good and well integrated (seamless) with the main speakers. Using one sub, the left and right signal is summed at the sub. Everything to my ears sounds normal and good, but I can't help but wonder if I'm not getting quite as much mix of the right signal along with the left. I have had this sub in my system for over a month and a half with everything turned on most of the time and have noticed no ill effects to the powered sub or my Rogue. Any thoughts?  Thanks!   
Tim

I added an 18" Velodyne to our system (we too listen to 90% classical) and set it to a relative low level. Even though it is off to the side, the deep bass still appears to come from the center between our main full-range speakers. Bought it on Audiogon for $1250 and drove two hours to meet the seller half-way. It has proven to be a great investment.

I listen to Classical 100% on my main system and love my HSU sub. It's powered and meshes very well with my AudioPhysics Tempos. I think it was about $500.

Al:  I notice the SVS-SB 2000 is only $200 more.  My room is about 575sq ft.
the 1000 is recommended for small to medium sized rooms.  The 2000 is ported.
Is the 2000 a match for my amp as well as the 1000?
Sorry to keep bothering you!

Rvpiano, the SB-2000 is described as having the same 47K line-level input impedance as the SB-1000, so using the PV11 to drive both the SB-2000 and your amps should be fine.

Tim (Mr_m), first I'm pretty certain that the DC offset issue which Rvpiano experienced using his amps with the 2Wq doesn't apply in your situation.  I believe that issue applies mainly (or perhaps entirely) to certain older designs utilizing ICEPower modules, while the Pharaoh is Hypex-based.  Also, I don't see anything in the manual for the Pharaoh cautioning against connecting a sub or any other active device to its outputs.

As far as the issue you described is concerned, I'm understanding that the symptom just occurs on the output of the sub, and not on the outputs of the main speakers.  And I assume it occurs on musical passages for which imaging is centered between the speakers when the balance control is set normally. If so it would certainly seem to point to an imbalance between channels in the input circuit of the sub, which would be surprising.  And if so it may be worth contacting RV (the sub designer, not the OP :-)) and seeing if he can shed any light on it.  Beyond that I have no particular thoughts about the issue.

Regards,
-- Al