RE "but the phase angle is a high –52°."
Stereophile unduly picky? Another viewpoint on this...
With regards to Recording Monitor Loudspeakers, which is a demanding application, Eargle talks about their impedance, then adds "... and the phase angle should not exceed + or - 60°." (John Eargle, Loudspeaker Handbook, 2nd Edition, P. 246).
The 1400 Array is still within that margin. If the 60° is good for monitor loudspeakers why it wouldn't be acceptable for a home speaker is somewhat beyond me.
Richard