Al...I stand corrected. Thanks for clearing that up.
Showing 3 responses by cmalak
Nickt...I suspect the XA30.5 will do fine driving the Sophia 2s. They are 88db sensitivity and 4ohm nominal rated speaker. The Sophia's do dip down to 3.26ohms at 220Hz but the phase angle is low at that frequency so that shouldn't be too hard to drive. Brian Damkroger of Stereophile reviewed the XA30.5s and drove Sophia 2s with them. The one thing he did point out is a slight lack of macro dynamics with this combo. So I don't think you will have a tough time driving the speakers but they will probably not get the last ounce of macro dynamics from the Sophia 2s, which are very dynamic speakers when properly powered. Here is the Stereophile review of the XA30.5: http://www.stereophile.com/solidpoweramps/pass_labs_xa305_power_amplifier/ |
According to this list of specifications at the Wilson site the Sophia 2 has a sensitivity of 86db/W/m, rather than the 88 mentioned above. Al...I got the 88dB sensitivity from John Atkinson's measurements of the Sophia 2 in the Stereophle review. Speaker manufacturer specs often are swayed by marketing considerations (although in this case, his measured sensitivity actually shows the speaker to be more sensitive than their stated specs), so I usually like to refer to measured performance in Stereophile, Hifi Critic, etc...Here is the link to Stereophile measurements section of the Sophia 2 review: http://www.stereophile.com/floorloudspeakers/619/index6.html. |