Data sheet en_us_1868002443
- 1. Communications Systems | LBB 442x/xx Power Amplifiers LBB 442x/xx Power Amplifiers ▶ 1, 2, 4, or 8 audio outputs (selection from 100 / 70 / 50 V outputs) ▶ Audio processing and delay for each amplifier channel ▶ Amplifier supervision and spare amplifier switching ▶ Loudspeaker line and loudspeaker supervision (LBB 4428/00 only line supervision) ▶ Eight control inputs and 1, 2, 4 or 8 control outputs ▶ Supervision of line attached to control inputs ▶ Automatic volume control ▶ Two audio inputs (4 audio inputs for LBB 4428/00) ▶ Redundant network connection There are four types of power amplifier units in the The units are self-monitoring and continually report their Praesideo product range. These differ in the number of status to the network controller. They support both single amplifier channels per frame: one, two, four, or eight. The branch and redundant loop cabling. The amplifiers have a overall power rating is 500 watts for all of the amplifiers. changeover facility for spare power amplifier switching. The power amplifiers can be set to 100 V, 70 V and 50 V Changeover relays are included with the units. The output tappings. They have short-to-ground and short- amplifiers have a 48 V DC back-up supply input. circuit detection functions, and can generate their own The digital audio processing can handle three parametric pilot tone for supervision purposes. equalization sections and two shelving equalization sections per channel with configurable audio delay. Controls and indicators Functions • 2 x 16-character LCD for status display The power amplifiers receive input signals over the • Rotary/push control button network. They also have two auxiliary audio inputs (four • Mains switch Interconnections for LBB 4428/00) for local audio. Their eight control inputs are freely programmable for system actions, and • Mains input priorities can be assigned to these inputs. Each control • Battery backup input • Two system network connections input has the ability to monitor the attached line for open • Two mic/line inputs (four for LBB 4428/00) and short-circuits. Control outputs are freely • 100 V, 70 V or 50 V outputs (for each amplifier programmable for faults and call related actions. channel) • 50 V output The 2 x 16-character display and the rotary control enable • Eight programmable control inputs local status enquiries. The display shows the VU-meter • Control output (for each amplifier channel) reading, when the audio monitoring mode is active. Audio • Headphone output can be monitored by headphone. • Spare amplifier connection (for each amplifier channel) www.boschsecurity.com
- 2. 2 | LBB 442x/xx Power Amplifiers Certifications and Approvals Region Certification Europe CE CE Traction TUEV- TUV Certificate IEC60849 SUED GL GL-SOLAS Safety acc. to IEC 60065-98 Rear view of LBB 4421/10 Power Amplifier 1 x 500 W Immunity acc. to EN 55103‑2 / EN 50130‑4 Emissions acc. to EN 55103-1 / FCC-47part 15B EVAC (TÜV certified) acc. to IEC 60849 Installation/Configuration Notes 9 4 1 5 Rear view of LBB 4422/10 Power Amplifier 2 x 250 W 10 2 6 3 11 7 12 Rear view of LBB 4424/10 Power Amplifier 4 x 125 W 8 1 Audio inputs, 2 x or 4 x 2 Control inputs 3 Plastic optical fiber network 4 Loudspeaker outputs, 1 x, 2 x, 4 x, 8 x 5 Spare amplifier input 6 Control outputs, 1 x, 2 x, 4 x, 8 x 7 Mains input 8 48 V backup supply Rear view of LBB 4428/00 Power Amplifier 8 x 60 W 9 Display and control 10 Network processor and DSP 11 Network redundancy switching 12 Power supply
- 3. LBB 442x/xx Power Amplifiers | 3 Parts Included Mic/line inputs 2 x (4 x for LBB 4428/00) Phantom supply 12 V ±1 V @ 15 mA Quantity Component Input range -7 dBV to +8 dBV ref nominal input value 1 LBB 442x/xx Power Amplifier 1 Power cord Control inputs 8x 1 Set of mounting brackets (large) for 19” rack Connectors Removable screw terminals 1 Set of feet Operation Closing contact (with supervision) 1 Set of connectors Control outputs 1 x per amplifier channel Connectors Removable screw terminals Loudspeaker outputs LBB 4421/10 Technical Specifications Rated load resistance 20 ohm (100 V); 10 ohm (70 V) Electrical Rated load capacitance 250 nF (100 V); 500 nF (70 V) Mains power supply Rated output power 500 W (1 min. at 55 °C) (per channel) 250 W (30 min. at 55 °C, cont. at 30 °C) Voltage 100 to 240 VAC ±10%, 50/60 Hz Power consumption Pmax -3 dB* / idle** / standby 125 W (cont. at 55 °C) LBB 4421/10 404 / 56 / 28 W Loudspeaker outputs LBB 4422/10 LBB 4422/10 402 / 60 / 28 W Rated load resistance 40 ohm (100 V); 20 ohm (70 V) LBB 4424/10 426 / 83 / 37 W Rated load capacitance 125 nF (100 V); 250 nF (70 V) LBB 4428/00 433 / 90 / 32 W Rated output power 250 W (1 min. at 55 °C) * Alarm tone level (per channel) 125 W (30 min. at 55 °C, cont. at 30 °C) ** With pilot tone 15 V 60 W (cont. at 55 °C) Battery power supply Loudspeaker outputs LBB 4424/10 Voltage 48 VDC -10% to +20% Rated load resistance 80 ohm (100 V); 40 ohm (70 V) Power consumption Pmax -3 dB* / idle** / standby Rated load capacitance 60 nF (100 V); 125 nF (70 V) LBB 4421/10 380 / 46 / 20 W Rated output power 125 W (1 min. at 55 °C) LBB 4422/10 378 / 50 / 21 W (per channel) 60 W (30 min. at 55 °C, cont. at 30 °C) LBB 4424/10 399 / 76 / 28 W 30 W (cont. at 55 °C) LBB 4428/00 397 / 63 / 22 W * Alarm tone level Loudspeaker outputs LBB 4428/00 ** With pilot tone 15 V Rated load resistance 160 ohm (100 V); 80 ohm (70 V) Mic/line inputs 2 x (4 x for LBB 4428/00) Rated load capacitance 30 nF (100 V); 60 nF (70 V) Connector 6-pole header for removable screw con- Rated output power 60 W (1 min. at 55 °C) nector (mono, balanced) (per channel) 30 W (30 min. at 55 °C, cont. at 30 °C) Line 15 W (cont. at 55 °C) Frequency response -3 dB @ 50 Hz and 20 kHz (±1 dB) Connectors 9-pole header for removable screw con- S/N >87 dBA nector CMRR >40 dB @ 1 kHz Frequency response 60 Hz (80 Hz for LBB 4428/00) to 19 kHz (-3 dB) Input range -6 dBV to 6 dBV S/N >85 dB (no pilot tone) Input impedance 22 kohm Crosstalk <80 dB at nominal load for 1 kHz Mic Distortion <0.3% (@ 1 kHz) @ 50% of rated output Frequency response -3 dB @ 100 Hz and 16 kHz power Nominal input level -57 dBV S/N >62 dBA with 25 dB headroom CMRR 40 dB at 1 kHz Input impedance 1360 ohm www.boschsecurity.com
- 4. 4 | LBB 442x/xx Power Amplifiers Mechanical Ordering Information Dimensions (H x W x D) Accessories for tabletop use, with feet 92 x 440 x 400 mm LBB 4440/00‑CN Supervision Control LBB4440/00-CN (3.6 x 17.3 x 15.7 in) Board for 19” rack use, with brack- 88 x 483 x 400 mm China version, for use in the power amplifier ets (3.5 x 19 x 15.7 in) on each amplifier channel in front of brackets 40 mm (1.6 in) LBB 4441/00‑CN Loudspeaker LBB4441/00-CN Supervision Board behind brackets 360 mm (14.2 in) China version, monitors the integrity of a Weight loudspeaker LBB 4421/10 13 kg (28.7 lb) LBB 4442/00‑CN Line Supervision Set LBB4442/00-CN China version, contains the master and slave LBB 4422/10 14 kg (30.9 lb) device for supervision of a single loudspeaker LBB 4424/10 16.5 kg (36.4 lb) line LBB 4428/00 14.5 kg (32 lb) LBB 4443/00‑CN End of Line (EOL) LBB4443/00-CN Mounting Standalone; 19”-rack Supervision Board China version, monitors the integrity of a Color Charcoal with silver loudspeaker line Environmental Operating temperature -5 ºC to +55 ºC (+23 ºF to +131 ºF) Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF) Relative humidity 15% to 90% Air pressure 600 to 1100 h Pa Ordering Information LBB 4421/10 Power Amplifier 1 x 500 W LBB4421/10 1 x 500W LBB 4422/10 Power Amplifier 2 x 250 W LBB4422/10 2 x 250 W LBB 4424/10 Power Amplifier 4 x 125 W LBB4424/10 4 x 125 W LBB 4428/00 Power Amplifier 8 x 60 W LBB4428/00 8 x 60 W LBB 4421/10‑US Power Amplifier 1 x LBB4421/10-US 500 W US version, 1 x 500 W LBB 4422/10‑US Power Amplifier 2 x LBB4422/10-US 250 W US version, 2 x 250 W LBB 4424/10‑US Power Amplifier 4 x LBB4424/10-US 125 W US version, 4 x 125 W LBB 4428/00‑US Power Amplifier 8 x 60 W LBB4428/00-US US version, 8 x 60 Watt LBB 4428/00‑CN Power Amplifier LBB4428/00-CN 8 x 60 W China version, 8 x 60 W Americas: Europe, Middle East, Africa: Asia-Pacific: Represented by Bosch Communications Systems Bosch Security Systems B.V. Robert Bosch (SEA) Pte Ltd 12000 Portland Avenue South P.O. Box 80002 11 Bishan Street 21 Burnsville, Minnesota 55337, USA 5600 JB Eindhoven, The Netherlands Singapore 573943 Phone: +1-800-392-3497 Phone: + 31 40 2577 284 Phone: +65 6571 2600 Fax: +1-800-955-6831 Fax: +31 40 2577 330 Fax: +65 6571 2698 audiosupport@us.bosch.com emea.securitysystems@bosch.com apr.securitysystems@bosch.com www.boschsecurity.com www.boschsecurity.com www.boschsecurity.com © Bosch Security Systems Inc. 011 | Data subject to change without notice T2318834443 | Cur: en-US, V22, 27 Jan 2011