AudioWorld, Inserts for flush-mounted devices, Loudspeaker insert, anthracite, Loudspeaker insert 5 cm (2") For amplifier insert 8211 U. For intercom amplifier inserts 8214 U. MDRC amplifier 8208. For microphone console 8205. With broadband characteristics. With screwless terminals. Rated output: 2 W (RMS) Frequency response: 150 - 16,000 Hz Impedance: 16 Ohm Protection class (Device): IP 20, SELV Mounting depth: 34 mm