Good suggestions, I will check to see if my speakers really require an active crossover or not, but I don't think they do. The reason why I want to use one BEFORE the amp is that I want to reduce the load on the amp by getting rid of the frequencies that the speakers will not produce. I am sure you have seen my other questions relating to bi-amping a pair of Infinity Kappa 9's Putting all the suggestions together I have come up with the following set-up. Almost all of my components are higher-end Yamaha (sort of mid-fi I guess) I have a Yamaha CX-1000 pre-amp with two sets of outputs. One is being run to a Infinity SSW-210 sub (250 watts, 2 10" drivers) The other set I plan on running to a Paradigm X-30 sub crossover. This is due to my Kappa 9's having a 80hz crossover for bi-amping/bi-wire configurations. And the x-30 has 80hz as it's middle high-pass setting. According to reviews and tests the high pass is actually about 75hz. So I figure if I run the high pass out to one of my two Yamaha MX-1000 amps and then to the Kappa 9 crossover I should have a seamless connection with the K9 crossover throwing out just 75-80hz. I will also run the low-pass a bit above 80hz with the same results on the low end. That way the amps are only producing the frequencies that are required. I think it will all work fine. My Ohms??? question is because the Kappa 9's are rated at 4 ohms, but that drops to less than 1 ohm over part of the frequency range. And this is a bit too much for one MX-1000 sometimes. (my second MX is on it's way) I am hoping that by bi-amping I will solve that. Less paths for the power to travel equal more resistance right? I know, I know I really want to get a Sunfire Signature and bi-wire it for a much better result than that Yamahas could ever produce. But that is out of the question for a little while anyway. Someone must have examples of what they have seen once going to a bi-amp set-up. Since my speakers are 12 years old (just bought them used) I don't know if I can trust what Infinity says if I do get ahold of them. I have all the documents and there is nothing that is helpful. I have tried to measure the resistance with a multi-meter, but I never got any results that made any sense. How can I measure what I want to find out?
If you Bi-Amp a 4 ohm speaker = Ohms????
If you bi-amp a 4 ohm speaker what is the amp seeing? In other words is the non-bi-amped 4 ohms the result of two 2 ohm speaker sets in series, two 8 ohm speaker sets in parallel, or could it be anything? Or would the resulting resistence be 4 ohms on both the high and low pass? Or could it be all different combinations? Is there a way to tell? I plan on running the left signal on one amp, the right on another. If there is a difference between the high and low pass could that be a problem if the amp sees 2 ohms on the left (my low pass signal) and 8 ohms on the right (high pass)???? Also consider I have an active crossover before the amps so only the low signal will be seen by the left side of each amp, the high on the right. But I guess my main question is just what should I expect the amps to see once the 4 ohm speakers are bi-amped. Maybe it is a dumb question, I don't know.......