So I traded a Squier Affinity Strat for a Rogue 120BT bass amp to mess around with. I got the amp home decided to pull the speaker out because the amp sounded alot better than I thought it would. I figured the speaker had to have been changed out. Sure enough there is a JBL Signature D130F speaker in it. I know the speaker sound real good just dont know what the quality is. The speaker is a 8 ohm according to the back of it. On these speakers isn't the red the ground and black the positive if so it wasn't hooked up properly. Any info would be greatly appreciated.