Audio Newbie

If you checkout the manual for the LFM1, which is online. Go to page 6 - Diagram2. This will show you that your front left/right channels of your reciever can be connected directly to the LFM1. You use the LFM1 to adjust your crossover frequency and also send the high frequency (80hz and up) output from the LFM1 to your front left/right speakers also shown on that diagram.

As far as your reciever, you can pick number 1,2 or 4 and see how your receiver puts out. Since you have limited power in your receiver, you will probably find not sending the low frequencies to your other speakers will be best. But this does depend a lot on the efficiency of your speakers.

Keep in mind that your brain/ear cannot figure out what direction sound is coming from below about 100hz, so don't worry about not outputting those frequencies to the other speakers. In a normal room, the LFM1 should have plenty of output.

Do some listening tests and see what you like best..