The Tritons need to be driven by your own amp from 80hz up to 400hz there's a lot of power asked from an amp in this mid bass upper bass to 200hz region and this is where Stereophile has given the impedance/phase loading that's well below 4ohms in conjunction with negative phase angle as well, this needs an amp that is more than a common 300b 8w SET can give.
Unless he has a purpose built special 8w set, that has 2ohm-4ohm output transformers with "low output impedance" and still able to give 8w.
Cheers George