Bic America BICMSR5 5-Inch 2-Way Ceiling Speakers with Swivel Tweeters No separate mounting bracket required 5" poly/carbon cone woofer Neodymium Mylar swivel dome tweeter 10-100w each recommended amplifier 65Hz-21kHz No separate mounting bracket required 5" poly/carbon cone woofer 1?2" neodymium mylar swivel dome tweeter 10-100w each recommended amplifier 65Hz-21kHz