KTV series is the upgrade version of trisection frequency and 10 inch full frequency Karaoke speaker. It combines a 3-inch cone high pitch unit with a 3-inch cone alto unit to reduce crossover point of low frequency acoustic effectively and make middle frequency display well. Two units arrange according to the minimum spacing to reduce sound interference greatly which cause by path difference. The details of ultra high frequency are clear and have rich layering. 10 inch low frequency unit increases stroke to get more transient response of low frequency, make its sound clearer and make strength stronger. It is suitable for night clubs, dancing halls, KTVs, karaoke rooms and compartment of the small entertainment halls.