[Hallicrafters] S20R "Sky Champion" Audio

[Laurance Brungardt]

Hi Gang,
 

This is Red Brungardt - W5UW in Glenpool, Oklahoma. I'm restoring on an old Hallicrafters S20R "Sky Champion" receiver and I need to replace the original 5" speaker that has a 1400 ohm field coil and a 5 ohm voice coil. I have a question, if I were to replace it with  5" 1000 ohm field coil, 3.2 ohm voice coil speaker would that be close enough to the 1400 ohm original field coil or will I need to modify the circuit so that the audio output tube sees 1400 ohms?

Thanks