I think that you've interchanged the mentions of the two amps. The J2, with its 0.4 ohm output impedance, behaves pretty much as a voltage source. The F2, with its 15 ohm output impedance, is the amp that behaves as a current source.
But to answer your question, while I have no experience with these amps, I would approach this endeavor with caution. See the following paper by Nelson Pass, about current source amps:
http://www.firstwatt.com/pdf/art_cs_amps.pdf
Note the many examples in which various passive components (resistors, capacitors, and in some cases inductors) are paralleled with the speaker to optimize sonics, with the values of those components depending on the particular driver. And note this statement in the conclusion section of the paper, especially the reference to "electrical networks":
-- Al
But to answer your question, while I have no experience with these amps, I would approach this endeavor with caution. See the following paper by Nelson Pass, about current source amps:
http://www.firstwatt.com/pdf/art_cs_amps.pdf
Note the many examples in which various passive components (resistors, capacitors, and in some cases inductors) are paralleled with the speaker to optimize sonics, with the values of those components depending on the particular driver. And note this statement in the conclusion section of the paper, especially the reference to "electrical networks":
Current sources and amplifiers with low damping offer interesting possibilities for improvement with these [full-range high-efficiency] drivers but they require considerable work to get the enclosures, electrical networks and acoustic environment just right.Best regards,
-- Al