One thing you'll learn real fast when playing with loudspeaker crossovers is that even the best resistors sound terrible.
So, I would try not using that 1 Ohm resistor at all. If you find the speaker too relentless, which is likely not the case if it's actually only a 1 Ohm resistor that's required, then you will need a resistor. The best for speaker use in my opinion are the Ohmite silicone conformal coated wirewound. Many folks like the Mills, but I find them a significant step down compared to the Ohmite.
So, I would try not using that 1 Ohm resistor at all. If you find the speaker too relentless, which is likely not the case if it's actually only a 1 Ohm resistor that's required, then you will need a resistor. The best for speaker use in my opinion are the Ohmite silicone conformal coated wirewound. Many folks like the Mills, but I find them a significant step down compared to the Ohmite.