The general dimensions of these speakers are as follows: They have a total diameter of 172 mm and a depth of 30 mm . The screw distance is 154 mm . The hole diameter is 145 mm . | They have a total diameter of 172 mm and a depth of 30 mm . | The screw distance is 154 mm . | The hole diameter is 145 mm . | These speakers have a weight of 0.40 kg . | The system is 2-way . | The maximum power is 80 W , allowing them to reach approximately 89 decibels (db), a sufficiently high volume for clear listening in both outdoor and indoor environments. | The electrical resistance of these speakers is 4 OHM impedance . | The frequency response of a speaker is the relative volume measure at which the speaker will reproduce different frequencies. These products have a response of 60-16000 Hz . | These speakers have a protection rating of IP 44 .