Do CJ's amps project a "V" shaped soundstage?

premier 12's or premier 8's definitely don't have this V shaped imaging your describing.

I don't know what your past experience has been in your set up, however much of the sound which you hear coming from beyond the outside borders of your speakers is the result of out of phase info from/in the recordings itself. In phase information, upon which stereo imaging in based, only occurs between the speakers. That is not to say that the amp does not contribute to the size (HxDxW) of the sound stage, it does, but just between the speakers. Have you played discs that are known for the quality of their soundstage? A lot of disc's have a small central image with little sound from the far left and right in the rear of the soundstage.

I disagree ... the deeper you get your soundstage, the wider it gets at the rear ... imaging "beyond" the speaker (which is really a line drawn from the listening position thru the speaker) to the rear and outside. At least this is what I have found in my system ...

Different components/cables etc will image more forward or deeper, affecting the above. Not sure where the CJ or your other components or speakers image.