04-26-2014, 03:38 PM
Hey Will
The output transformer you are looking for will have a 7-8k with a ct. That's 3.5 to 4k per tube. Wattage 250v x 70ma= 17.5 watts. 20w unit is fine. I've been told that the voice coil is very low impedance like 1.5 ohms. Most universal jobs will start at 4 ohms.
GL on getting the Might 87 singing again!!
Terry
The output transformer you are looking for will have a 7-8k with a ct. That's 3.5 to 4k per tube. Wattage 250v x 70ma= 17.5 watts. 20w unit is fine. I've been told that the voice coil is very low impedance like 1.5 ohms. Most universal jobs will start at 4 ohms.
GL on getting the Might 87 singing again!!
Terry
