I have a Yamaha R-N602 Stereo Network Integrated Amplifier. I have bought 2 Definitive Technology BP-9040 speakers - 1 of them has arrived, the other will be here in a few days. I connected only the 1 speaker to the amp with 14 AWG OFC speaker wire with banana plugs at both ends and tripled-checked that positive went to positive and negative went to negative. I connected the power cord to the speaker and a power strip. The LED on the back of the speaker turned red and then to blue. I turned on my amp and made sure that speaker A was on. I have sound coming out of the top half of the tower where the passive mids and tweeters are, but no sound from the bottom half where the powered subwoofer and the 2 other woofers are. I tried adding the LFE cable from the R-N602 amp to the back of the speaker tower. Still, no sound from the bottom. I tried another pair of speaker wires with banana plugs on them, but no still no sound from the bottom. I have read all of my manuals, watched online videos, filed a tech request with Yamaha and with Def Tech who will probably fit me in somewhere in their century-at-a-glance calendar).\n\nThe R-N602 is a stereo integrated amplifier, not a home theater A\/V unit where you can set "no sub" or "large" or any thing like that, so I come here humbly asking Ye overlords of Hi-Fidelity 2 questions:\n\n1. Is there a magic "something" that I need to do "something" with and then poof, the bottom and the top all produce sound?\n\n2. The speaker connections on the back of the Def Techs have red and black caps on the end, so instead of pushing the banana plugs into the connections at 180 degrees, I instead inserted the plugs through the holes at 90 degrees where bare wire would normally be inserted. Am I suppose to remove these red and black end caps and insert the bananas at 180 degrees into the speaker connections?\n\nThanks be to Ye overlords for hearing my questions.