بوش - مكبر صوت خزانة، 20 وات، أسود

High-fidelity music and speech reproduction
Supplied with adjustable wall‑mounting bracket
Self‑restoring overload protection
Provision for inside mounting of the optional line/loudspeaker supervision board
EN 54‑24 certified

• Product: LB1‑UM20E‑(D/L), LB1‑UM50E‑(D/L)
• Description: Premium‑sound Cabinet Loudspeaker
• Rated Power (PHC): 20 W, 50 W
• Power Tapping: 20 / 10 / 5 / 2.5 W, 50 / 25 / 12.5 / 6.25 W
• Sound Pressure Level at Rated Power / 1 W (1 kHz, 1 m): 101 / 88 dB (SPL), 108 / 91 dB (SPL)
• Sound Pressure Level at Rated Power / 1 W (1 kHz, 4 m): 87 / 74 dB (SPL), 94 / 79 dB (SPL)
• Effective Frequency Range (-10 dB): 90 Hz to 20 kHz
• Horizontal Coverage (1/4 m): 174° / 136°, 186° / 126°
• Vertical Coverage (1/4 m): 127° / 141°, 84° / 62°
• Rated Input Voltage / Impedance (LB1‑UM20E‑D/L):
  • 20 W: 12.65 V – 8 Ω / 250 Ω / 500 Ω
  • 10 W: – / 500 Ω / 1000 Ω
  • 5 W: – / 1000 Ω / 2000 Ω
  • 2.5 W: – / 2000 Ω / 4000 Ω
• Rated Input Voltage / Impedance (LB1‑UM50E‑D/L):
  • 50 W: 20 V – 8 Ω / 100 Ω / 200 Ω
  • 25 W: – / 200 Ω / 400 Ω
  • 12.5 W: – / 400 Ω / 800 Ω