[toecheese]

Your mistake is better than mine. I had started the fan mod last summer and took the shroud out. Initially I was going to do the in-line resistor. After reading about it (starting playing with circuits again and know that a 24v source really prefers a 24v output), put the project aside until recently when my neighbor wanted one for his 1500. We ordered a pair, and I did the fix... but forgot where the shroud went. I think I threw it away! So now I'm shroudless, and I don't feel like going to Turin to get a different one. I reversed the flow and did some testing, but can't get the amp even a teeny bit warm, so I'm satisfied with the setup.