SDA 1c/Tube Amplication/Grounding

I have a pair if SDA 1c speakers, with new(ish) crossovers built by DHS about three years ago, using the gimp board and replacing the original IC with a larger gauge one with SpeakOn connectors.
I have perused a couple of tube amp strings and some refer to mods that appear to eliminate the requirement for a common ground. This, along with my amp search, has led to a couple of questions that perhaps you can help with.
(1)-Highest consideration amps at the moment are the Prima Luna 200 or 300, or perhaps one of the Rogue amps, either a hybrid (Sphinx) or tube throughout (Cronus). Does any one (a) know if these amps have a common ground (which allows me to ignore my question 2) and, (b) have any experience with SDA 1c's and tube amplification, and comments, observations, etc.?
(2)-I have asked Dave Shirly (DHS) if the mod'd x-over still requires a common ground if the IC is used, but maybe someone knows if inherently the gimp replacement board either does eliminate the requirement or inherently does not. Or perhaps it is a "variable" depending on x-over construction/wiring.
Thanks,
Paul
I have perused a couple of tube amp strings and some refer to mods that appear to eliminate the requirement for a common ground. This, along with my amp search, has led to a couple of questions that perhaps you can help with.
(1)-Highest consideration amps at the moment are the Prima Luna 200 or 300, or perhaps one of the Rogue amps, either a hybrid (Sphinx) or tube throughout (Cronus). Does any one (a) know if these amps have a common ground (which allows me to ignore my question 2) and, (b) have any experience with SDA 1c's and tube amplification, and comments, observations, etc.?
(2)-I have asked Dave Shirly (DHS) if the mod'd x-over still requires a common ground if the IC is used, but maybe someone knows if inherently the gimp replacement board either does eliminate the requirement or inherently does not. Or perhaps it is a "variable" depending on x-over construction/wiring.
Thanks,
Paul
Comments
In very general terms there seems to be a consensus that SDA speakers work best with good quality solid state amplifiers as opposed to vacuum tubes. I'm quite sure there are exceptions. It might have to do with the quality of the bass produced, or current capability versus voltage capability. I'm sure SDA owners will comment.
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
How do you like the combination? As the "volume" of my listening has an inverse relationship to my age, I don't feel the need for the 1812 cannons on Telarc to be lifelike or higher volume like I did when I was younger--pretty soon the music will be inaudible. Most of my listening falls in the 50 to 65 db average range these days and leans more acoustic than classic rock.
Paul
Very happy with the combination of the Rogue and the 1c's and the 2b's. At 100 watts/channel of tube power, it has more than enough reserve to open up the speakers as needed. I also find myself listening to more acoustic and female vocalists these days as opposed to classic rock. The Rogue also has a decent phono stage if you want to spin vinyl. It is not an "end game" amp for most people, but the Cronus Magnum offers a lot of bang for the buck, especially if you can pick up a nice used one.
With only one tube in the Preamp Section, tube rolling is not a Bank draining experience either.
polkaudio Fully Modded SDA SRS 2.3TL's + Dreadnaught, LSiM706c, 4 X TC265i Rears, SVS PB13 Ultra x 2
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