as the old adage goes:
"if it sounds too good to be true, it probably ain't true"
this is not to say you can't hot rod an alternator, either with neo's on the rotor or by bypassing the regulator, and full fielding the rotor, and spinning the hell out of it.
but there are problems with this approach,
- if it is truely a low rpm unit that produces some serious power, then cooling will certainly become an issue. burn ups are certain.
- 6000 watts is something on the order of 8 hp of needed input theoretically and likely well over 10 hp in reality to support. you are talking serious torque at lower rpms, and the transmission of such power becomes a problem, along with the brgs, shaft and pulley in the little alternator.
considering these examples i find the claim suspect, i really think what is happening here is some fuzzy testing in that the thing is mounted to a test bench, spun up to speed to get the voltage at different rpm points and then loading with a dead short to get max amps instantaneous, and plotting those numbers.
this results in faulty assumptions, and worse wild advertizing.
i would pass on this one
just my take on it
bob g