Thanks for all the replies. That's what confuses me. I know that the TBS signal is the top LS pin which is what is connected to the Clark via a 25K resistor. Now I was going to split it to an amp to drive another speaker like what strmnd54 did to his acoustic smoker but was confused when the Benedini manual said use the LS- and ground to the amp. So which one is the right one LS- or LS+ to the amp? I am trying to avoid the exact thing that Dan mentions.