Input Impedance of Dreadnaught II

Hi Dwight,

Before I had the 5A's, I also used a 3A/2WQ combo. When I changed to the 5A's I did an in home demo comparison between the Dreadnaught II and the Theta Citadel amps. The Citadels were quite a step up from the Dreadnaught II. They have similiar tonal qualities, but the Citadel was just better at everything than the Dreadnaught. It was more effortless sounding, wider soundstage, more air around performers, better bass, better high frequency response and a more layered front to back soundstage. So I upgraded to the Citadels.

Thanks guys. I did set it at 100K. Wow...it is wicked sounding! I dont know whether the HUGE difference is the Quatros over the 3A/2WQ combo or the Dreadnaught II over the Bryston, but we arent talking about a moderate difference here! Babybear, what did you think of the combo and why did you change?

Sincerely,

Dwight

Hi,

I have previously used a Dreadnaught II and Vandy 5A's. You should sum the 50K per leg balanced input impedance (so its 100K), and then set the balanced Vandy high pass filters on the 100K setting and you will be good to go.

Assuming the wording you quoted is stated precisely, I would interpret it to mean that the number you should use is 100K.

"For each phase" would seem to mean 50K input impedance between "hot" (xlr pin 2) and ground; and 50K input impedance between "cold" (xlr pin 3) and ground. That would mean that the input impedance between pins 2 and 3 (which corresponds to the sum of the input impedances between each of the two input signal polarities and ground) is 100K.

Regards,
-- Al