In this paper. we gave a new topological concept and we called it the open limit point compactness. We have proved that each of the compactness. and the limit point compactness is stronger than of the open limit point compactness. https://www.roneverhart.com/Singtronic-KS-2000DW-Professional-3000W-Vocalist-Floor-Standing-Karaoke-Speaker-System-Pair/