But against a backdrop of continued and constant protests against owner Dejphon Chansiri’s – and a third separate transfer embargo – the Owls managed to impress as they looked to back up the victory over Portsmouth last time out.
Wednesday keeper Ethan Horvath did have to make a couple of early saves before the hosts took control.
And it was no surprise that ever reliable captain Bannan, a rare and welcome constant during tumultuous times, proved the creator for the opener when his set-piece was turned in by Iorfa for the club’s first home goal of the season.
At the other end, counterpart Paul Nardi did well to deny Liam Palmer and Cadamarteri then headed over.
But the second period saw Rangers up the tempo.
Karamoko Dembele – one of three half-time substitutes – hammered a shot just wide shortly before Madsen converted his penalty.
Wednesday responded, Palmer shooting wide from a clever Bannan pass and Cadamarteri heading over from another cross from Bannan, while Richard Kone smashed an effort over the bar for Rangers.
Neither side could take one of the many opportunities on offer, meaning the Owls have not won at home since the 2-1 success over Middlesbrough on 23 April.