Members Gizzyboo Posted December 30, 2009 Members Share Posted December 30, 2009 I apologize for clogging up the forum this morning but i'm setting up for the first time in a while and i need some refresher advice. My next question is about my Yorkville LS720P Subs. What are the Boost Frequency and HF Roll-Off dials again? I'm thinking the HF roll off should be almost at max shouldn't it? Also, my NX750P's have a button for LF Rolloff selecting either 40Hz 90Hz. What should this be set to typically? Thanks again everybody. Link to comment Share on other sites More sharing options...
Members Chickentown Posted December 30, 2009 Members Share Posted December 30, 2009 Hi Gizzy - Do you have a crossover between your mixer and the speakers? Link to comment Share on other sites More sharing options...
Members Mogwix Posted December 30, 2009 Members Share Posted December 30, 2009 Set the LF rolloff (hi-pass) to 40Hz. Set the HF rolloff (lo-pass, crossover) to whatever you're crossing your tops over at. 100Hz is common. If you're using an external active crossover, then set this all the way "up" or defeat it entirely, if you can, and let the active crossover do it's thing. What tops are you using? Link to comment Share on other sites More sharing options...
Members Gizzyboo Posted December 30, 2009 Author Members Share Posted December 30, 2009 Chickentown, I assume the crossover is built in the sub. I use one XLR from the L & R to each sub and from the sub up into the main (NX750P). Link to comment Share on other sites More sharing options...
Members Chickentown Posted December 30, 2009 Members Share Posted December 30, 2009 Wouldn't you set the HF Rolloff on the sub and the LF Rolloff on the tops to approximately the same frequency to create a rough crossover point? For your boxes, I think that will be 100hz. So about the 9 o'clock position on the sub and the LF Rolloff button on your tops pressed in. The Boost Frequency knob on your sub...I'd experiment with it at the "high noon" position (boosting the 60-70hz area). Some discussion of that here: http://acapella.harmony-central.com/showthread.php?t=1720512 Link to comment Share on other sites More sharing options...
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