LB1-UM20E-D
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