The Blues managed just one goal in a meek first half as the Power romped to a 16.14 (110) to 8.12 (60) win on Thursday night at Adelaide Oval.
Pundits were already querying if Voss will survive to serve out his contract which expires at the end of next season.
And the Blues' alarming lack of fight will trigger fresh debate after Port booted the initial eight goals of a lopsided encounter.
Carlton, who next meet ladder leaders Collingwood and then reigning premiers the Brisbane Lions, slipped to 11th on the ladder with six wins and nine losses.
The Blues, who will likely be three wins outside the top eight by round's end, also lost creative backman Adam Saad to concussion.
Saad was felled by a shoulder bump from Port ruckman Dante Visentini which sparked a prolonged push-and-shove between a mass of players at halftime.
Saad's injury came during Carlton's horror opening half - instead of a steely response to last week's shock 11-point loss to North Melbourne, the Blues didn't offer a yelp.
Port kicked 5.4 to 0.3 in an ominous opening term when Blues pair Charlie Curnow and Orazio Fantasia sprayed set shots at goal.
Port then added another three consecutive majors - when Mitch Georgiades booted his fourth goal, the hosts led 58-6.
Carlton's Lewis Young finally scored the visitor's first goal 26 minutes into the second term.
At halftime, Port led 8.10 to 1.6 - the second-lowest opening half in Voss' four-year tenure at Carlton.
The Power slotted three more successive majors to create a 63-point lead just eight minutes into the third period while the Blues were still stuck on one goal.
Carlton belatedly found some scoring punch to finish the term with three goals to Port's five but trailed by 56 points at three-quarter time.
The Power stretched their advantage to a match-high 68 points early in the final term of a win which lifts them to 10th on the ladder.
Spearhead Georgiades finished with five goals, Willie Rioli kicked three and Darcy Byrne-Jones two.
Utility Miles Bergman (25 disposals) also booted two majors while claiming another scalp in limiting Carlton skipper Patrick Cripps to 17 touches and a consolation last-term goal.
Port captain Connor Rozee and his deputy Zak Butters were standouts with 30 disposals apiece, four-gamer Hugh Jackson (17) impressed, as did recruit Joe Richards (22).
Carlton couldn't find a multiple goal-scorer or a clear winner - George Hewett led the visitor's disposal count with 22 featuring only six kicks and veteran Sam Docherty was their next-best ball-winner with 19 disposals.
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