BOSCH LBB1938/30

480 W power amplifier in a 3U high 19”case for rack mounting or tabletop use.

Cek Harga

Description

The Bosch LBB1938/30 is a powerful 480 W power amplifier in a 3U high 19”case for rack mounting or tabletop use.

LEDs on the front panel of the LBB1938/20 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.

Rack mounting brackets supplied.

  • 480 watts
  • Protected against overload and short circuits
  • Temperature-controlled fan for high reliability at high output levels & low acoustic noise at lower output levels
  • Overheat protection circuit with LED warning on the front panel
  • Operates on mains power or 24 V battery for emergency backup, with automatic switchover
  • Monitored mains presence, battery presence, pilot-tone presence, amplifier operation for Emergency / EVAC use
  • Front panel status LEDs for supervised functions
  • Two balanced inputs with priority control, each with loop‑through
  • Additional 100 V line input
  • Rear mounted gain / level controls
  • 70V / 100V/ 8 ohm outputs
  • Two separate priority controlled 100 V outputs for zones that only need announcements made via the priority input, and for zones that will not get any announcements made via the priority input.

Specification

Voltage 220/230 VAC, ±10%, 50/60 Hz
Inrush current 19 A
Max power consumption 2200 VA
Voltage 24 VDC +15% / -15%
Current max 30 A
Output power (rms/maximum) 480 W / 720 W
Power reduction on backup power -1 dB
Frequency response 50 Hz to 20 kHz (+1/‑3 dB @ ‑10 dB ref. rated output)
Distortion <1% @ rated output power, 1 kHz
S/N (flat at max volume) >90 dB
Line inputs 2 x
Connector 3‑pin XLR, balanced
Sensitivity 1 V
Impedance 20 kOhm
CMRR >25 dB (50 Hz to 20 kHz)
Gain 40 dB
Connector Screw, unbalanced
Sensitivity 100 V
Impedance 330 kOhm
Line loop-through output 2 x
Connector 3‑pin XLR
Nominal level 1 V
Impedance Direct connection to line input
Loudspeaker outputs 3 x
Connector Screw, floating
Direct output 100 V, 70 V, 8 Ohm
Priority only (from input 1) 100 V or 70 V internally selectable
Music (non-priority) only 100 V or 70 V internally selectable
Power consumption
Mains operation
Max power 990 W
-3 dB 715 W
-6 dB 510 W
Pilot tone* 110 W
Idle 25 W
24 VDC operation
Max power 32 A (770 W)
-3 dB 26 A (625 W)
-6 dB 18 A (430 W)
Pilot tone* 3.8 A (91 W)
Idle 0.7 A (17 W)
* 20 kHz -20 dB with maximum loudspeaker load
Mechanical
Dimensions (H x W x D) 145 x 430 x 370 mm (19″ wide, 3U high, with feet)
Weight Approx. 25 kg
Mounting Standalone, 19”rack
Color Charcoal
Environmental
Operating temperature -10 ºC to +55 ºC (14 ºF to +131 ºF)
Storage and transport
temperature
-40 ºC to +70 ºC (-40 ºF to
+158 ºF)
Relative humidity <95%
Acoustic noise level of fan <48 dB SPL @ 1 m (max output)

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4.9 166 reviews

  • Avatar erwin1155 ★★★★★ dalam minggu terakhir
    Pelayanan bagus dan recommend
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  • Avatar Arip Kurniawan ★★★★★ 3 weeks ago
    Pelayanan bagus dan ramah. Semoga lebih maju
  • Avatar Ferry Panggabean ★★★★★ sebulan yang lalu
    Pelayanan Bagus..Ramah dan cepat tanggap..after sales nya jempol👍👍
  • Avatar Rulli Hidayat ★★★★★ a month ago
  • Avatar Ikhsan - ★★★★★ 2 months ago
    The best sound system store in Jakarta, with excellent service, provides free consultation and solutions to meet your sound system expectation, bravo!
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    Menjual degan kualitas baik .
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    mantapeu fast resp
  • Avatar Bisnis2 Shinwa (PT. SHINWA) ★★★★★ 3 months ago
  • Avatar Adikara Putri ★★★★★ 3 months ago
  • Avatar Robby M ★★★★★ 2 bulan lalu
    Pelayanan Fast Respon , Ramah dan komunikatif.
    Reccomended seller. Thanks
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  • Avatar Yubi Yubaidillah ★★★★★ 4 months ago
    Mantap, Terimakasih
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    Sangat membantu bagi aku yg gak ngerti tentang elektronik. Terpercaya Dan ketika ada kesulitan bisa konsultasi by wa. Terima kasih.
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    huper AK15 A ..
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  • Avatar pramudya AN ★★★★★ 6 months ago
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  • Avatar Sinyo Sigarlaki ★★★★★ 7 months ago
    Bagus
  • Avatar Stevan Zhang ★★★★ 8 months ago
  • Avatar Sug Iyarti ★★★★★ 8 months ago
  • Avatar Bily niagarawan ★★★★★ 8 bulan lalu
    Service nya terbaik, produk original, layanan operator ramah sekali dan tempat toko nyaman, nggak salah pilih tempat beli produk di pusatsoundsystem 🤝
  • Avatar WILLIAM ORTEGA ★★★★★ 11 months ago
    Gokill!! Pusat Sound sangat membantu menyediakan layanan,service,advice yang sangat membantuu sayaa !! pokonya buat kalian yang membutuhkan keperluan barang ataupun jasa sound system bisa cek disini dan hubungi disini dijamin di rekomendasiin … More yang pas dan sesuai sama Tim Audio Consultant nyaa !
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    Pelayanan mantap...
  • Avatar aryobimo project ★★★★★ a year ago
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    Good Produk & Bisa Nego ????
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  • Avatar Rahmatulloh Sukaras (Rahmat) ★★★★★ a year ago
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    Ramah dan bersaing
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    pelayanan oke, kualitas speaker sangat bagus … untuk harga cukup ramah di kantong.
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    Pelayanan ok.. Diskonnya mayan.. sudah seperti keluarga dibuatkan kopi segala.. thanks
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