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BOSCH Power LBB-1935

Ditambahkan pada : May 12th, 2015
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Kode Produk : Power Amplifier BOSCH LBB-1935
Dilihat : 1,273 kali
Kategori : Produk Bosch
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Bosch power amplifier booster lbb-1935

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Bosch LBB-1935 Plena Booster Power Amplifier

▶240 W power amplifier in a 2U high 19″ housing
▶EN 54‑16 certified
▶70 V / 100 V and 8 ohm outputs
▶Dual inputs with priority switching
▶100 V input for slave operation on 100 V speaker line

The LBB 1935/20 is a powerful 240 W power amplifier in a 2U high 19” case for rack mounting or tabletop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions. This high-performance unit fulfils a wide range of public address requirements at a surprisingly low cost.

Function

Dependability
The amplifier is protected against overload and short circuits. A temperature-controlled fan ensures high reliability at high output levels and low acoustic noise at lower output levels. An overheat protection circuit switches off the power stage and activates an LED on the front panel, if the internal temperature reaches a critical limit due to poor ventilation or overload.

Controls and indicators

Front
• Meter (LED’s for -20, -6, 0 dB and Power ON)
• Battery operation indicator
• Overheat indicator
Back
• Level control input 1
• Level control input 2
• Power button
• Mains switch

Interconnections
Back
• Priority line input 1 (XLR/balanced)
• Line loop-through 1 (XLR/balanced)
• Program line input 2 (XLR/balanced)
• Line loop-through 2 (XLR/balanced)
• Priority controlled loudspeaker output terminals
• 24 VDC power supply terminal
• Three loudspeaker direct output terminals
• Two 100 V slave input terminals
• Input 2 enable control terminal
• Earth connection screw
• Mains socket

Technical Specifications

Electrical

  • Mains power supply :
  • Voltage 230 VAC, ±10%, 50/60 Hz
  • Inrush current 9 A
  • Max power consumption 760 VA
  • Battery power supply :
  • Voltage 24 VDC, -10% to +20%
  • Current max 11 A
  • Performance :
  • Output power (rms 240 Watt /maximum 360 Watt)
  • Power reduction on backup power -1 dB
  • Frequency response 50 Hz to 20 kHz (+1 / ‑3 dB at ‑10 dB ref. rated output)
  • Distortion <1% at rated output power, 1 kHz
  • S/N (flat at max volume) >90 dB

Power consumption

  • Mains operation
  • Max power : 451 W
  • -3dB : 340 W
  • 6dB : 244 W
  • Pilot tone* : 55 W
  • Idle : 16 W
  • 24 V operation
  • Max power : 12.1 A (290 W)
  • -3 dB : 11.4 A (274 W)
  • -6 dB : 8.1 A (194 W)
  • Pilot tone* : 1.7 A (41 W)
  • Idle : 0.3 A (7 W)

Mechanical

  • Dimensions (H x W x D) 100 x 430 x 370 mm, (19″ wide, 2U high, with feet)
  • Weight Approx. 12.5 kg
  • Mounting Standalone, 19”rack
  • Color Charcoal.

Environmental

  • Operating temperature -10 ºC to +55 ºC (14 ºF to +131 ºF)
  • Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF)
  • Relative humidity <95%
  • Acoustic noise level of fan <48 dB SPL at 1 m (max output)
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