Anyone have wiring diagram for Amazing Platinums. Just replaced 1 60in ribbon and all eight woofers. Seems like there is very little bass. Sounds fine with powered sub hooked up and really bad without the sub. I know that they are wired in series and crossed at the 3rd woofer due to woofer being upside down. I'm quite amazed at the soundstage just need more bass. I have plenty of power 600x2.