Architech Pro Series AP-601 6.5" In-Ceiling Loudspeakers * Frequency response: 45Hz-20kHz * 50W nominal power * 100W maximum power * 91dB at 1W/1m * Pivoting 1" Mylar soft dome ferro-fluid cooled tweeters * Perforated metal grille * Impedance: 8 ohms * Far-forward woofer mount with pole-mounted tweeter * High temperature aluminum voice coils * Paintable frame and grilles