Bi-Directional and Corridor Speaker Solutions

SPKR-33-BD SPKR-11-BD-P SPKR-31-BD SPKR-6H16T Sensitivity dB 1W/1M 87 dB 92 dB 110 dB 110 dB Maximum SPL dB 94 dB 98 dB 121 dB 121 dB Tunnel coverage distance 10 - 40 feet 40 - 110 feet 50 - 150 feet 40 - 75 feet Weather proof No No Yes Yes Equivalent speaker coverage 2 8 10 5 Internal Amplifier No Yes No No IP7 Mating Amplifier IP7-SS8 (external) IP7-SS8 (embedded) IP7-SS20 (external) IP7-SS20 (external) Application Indoor, short hallway, low noise Indoor, hallway, moderate noise Indoor/Outdoor Tunnel or platform, high noise Indoor/Outdoor large open area, moderate to high noise