600 WATTS PEAK: Designed for home, home theater, commercial and continuous volume applications. 55Hz - 20kHz Freq response @89db for wide range two-way sound. 8 inch composite woofer and .5 inch high-compliance tweeter 70V TRANSFORMER: These Pyle ceiling speakers feature a 70 volt transformer, tapping at 20W/15W/10W/5W/2.5Wwith an 8 ohm bypass setting that allows use with Home audio amplifiers or Commercial PA systems DUAL MOUNT: Equipped with matching white grills, these can be mounted as in-wall speakeers or in-ceiling speakers. Dimensions: Cut-Out Diameter: 7.64" -inches - Mounting Depth: 3.23" -inches - Total Speaker Size (Diameter x Depth): 8.94" x 3.62" -inches