LB1-UM20E-L

Bosch LB1-UM20E-D Premium-sound Cabinet Loudspeaker 20W Charcoal, SPL at rated power / 1 W (1 kHz, 1 m) : 101 dB / 88 dB, Effective frequency range (-10 dB) : 90 Hz to 20 kHz, Opening angle at 1 kHz / 4 kHz (-6 dB) : horizontal 174° / 136°, Vertical 127° / 141°, Aluminum Enclosure

Bosch LBC 3474/00 Horn driver 50 W, for use with LBC3478/00 (14") or LBC3479/00 (20") horns, light gray RAL 7035, 50 / 25 / 12.5 W Rated Power, 127 dB / 110 dB (SPL), Effective frequency range (-10 dB) : 350 Hz to 4 kHz, Opening angle : at 1 kHz/4 kHz (-6 dB) : 60° / 28°.

Bosch LBC 3483/00 35W Horn Loudspeaker, aluminum, circular, IP65, Rated Power : 35 / 17.5 / 8.75 W, 127 dB / 112 dB (SPL), Effective Frequency Range : 380 Hz to 5 kHz.