Acoustic Audio 300w CS-IC83 Flush Mount In Ceiling Speakers with 8" Woofer 2 pcs (one pair) Acoustic Audio CS-IC83 Flush Mount In Ceiling 2 Speaker Set Wide Sound Dispersion Designed Speakers easily integrate with new and existing audio systems Traditional Passive speaker design, simply drive power from your home audio receiver or amp Flush Mount low profile housings install easy with unique Pressure Lock Mounting System Full Range sound coverage with 3-way woofer, midrange and tweeter configuration 8" High Rigidity Poly cone woofers with progressive spiders and butyl rubber surrounds Poly Mica midranges and 13mm soft dome tweeters 3-Way Passive Crossovers for greater fidelity Frequency response is 40Hz-20 kHz with 95dB at 8ohm Pressure Lock Mounting System clamps tight to drywall with No Hardware Needed Fits round speaker hole size of 9.49" with a mounting depth of 3.7" Overall speaker size of 10.86" with Spring Loaded raw wire connections Durable ABS Housings and Removable Grills can be painted to match your décor System Requirements Any home audio receiver or amplifier with raw speaker wire outputs Your receiver power should be no less than 10 and no more than 350 watts per channel CL3 Rated in wall certified raw speaker wire to connect your receiver to the speakers Applications Home Theater Surround Sound Systems Whole House Audio Systems Business or Retail Installations What's in the box 2 Flush Mount Passive Speakers with Removable Grills