Just be careful not to blow out the amplifier’s output stage. If I’m not mistaken, these Panasonic centers have a rather unique crossover system. Did you check the polarity at the terminals when you were inserting the wires into the slots? Try checking out the user manual for Panasonic SC-TM850DIN stereo system diagram here. The pages with the wiring diagrams explain everything in a way that’s easy enough for a complete beginner to understand. Maybe you’ll be able to figure it out using that diagram. I hope you manage to set it up. After all, it produces really decent sound—something modern plastic speakers can only dream of.