The Hammond Manufacturing specs for 1650H, per the supplier, are
Maximum primary voltage for 1650H is 514VAC with 86mA current. For the centre tap is 257V on each side
Secondary voltage for 4 ohm tap is 12.65V @ 3.162A
Secondary voltage for 8 ohm tap is 17.89V @ 2.236A
Secondary voltage for 16 ohm tap is 25.30V @ 1.581A
Flux density at full load is 14.17kGa
