I'm a tech working on a Crate V32 that has a bad output transformer. I can normally test the transformer to calculate the primary impedance, but with the output transformer being bad it's not going to help. Going by the tube data with two EL84s in parallel push pull, the primary should be 4k. It's possible though that they might have went a little higher. I hate to change the tone of the amp too much. If anyone knows the primary impedance of the original transformer please let me know. Or even a replacement transformer.