INTRODUCTION Thank you for choosing Phonic speaker as your gear. Both speakers feature with a 10� woofer and a piezo tweeter, plus a 35mm speaker stand cup for easy installation. An incredible quality of sound in a very small cabinet, these speakers exhibit a frequency response from 65Hz to 20KHz(SE710 II )and 60Hz to 20KHz(SE810) respectively. While almost identical in size, SE810 offers more punch and extended low frequency. With the high efficiency and sensitivity (93 dB), they are the perfect choice for clubs, coffee houses, or even your garage bend.