The general measurements of these speakers are as follows: They have a total diameter of 195 mm and a depth of 67 mm - 68 mm . The screw distance is 153 mm . The hole diameter is 142 mm . | They have a total diameter of 195 mm and a depth of 67 mm - 68 mm . | The screw distance is 153 mm . | The hole diameter is 142 mm . | These speakers weigh between 0.97 Kg and 1.63 Kg . | The system is 2-way . | The maximum power is 80 W , 120 W or 200 W , allowing them to reach about 89 -93 decibels (db), loud enough for good listening, both in outdoor and indoor environments. | The electrical resistance of these speakers is 4 OHM impedance . | A speaker’s frequency response is the measure of the relative volume at which the speaker will reproduce different frequencies. These products have a response between 55-16000 Hz and 50-20000 Hz . | These speakers have a protection degree of IP 44 .