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Bosch Public Address Amplifiers

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Bosch Communications Systems - a business unit of Bosch Security Systems - is one of the world's leading manufacturers and suppliers of professional audio, wireless, life safety and communication equipment. Bosch Communications Systems offers complete system solutions for the world's most critical, high-profile installations and events.

 
The Plena 'EASY' Range of Public Address Mixer-Amplifiers.

Click to open Data Sheet
Click to open Data Sheet

These Plena 'EASY' mixer amplifiers are high performance, professional public address units with modern state of the art features. They are easy to use, taking the complexity away from the user and putting it where it belongs, inside the equipment. Providing a crisp call or clear music is as easy as turning on the radio. The amplifier is also surprisingly affordable, without sacrificing features such as ducking, priority and flexibility.

Features:
4 microphone/line inputs, plus 3 music source inputs
100 V and telephone input with priority & VOX
Announcement only output, 3-wire volume override
Voice-activated emergency override
Wide range of power (30, 60 and 120 Watts)
2-tone chime
Outputs for line out and music only out
Unique easy-to-use intuitive tone controls

PLE-1MA030 Plena EASY 30w mixer amp, 2RU, includes rack ears $285.00 inc GST
PLE-1MA060 Plena EASY 60w mixer amp, 2RU, includes rack ears $395.00 inc GST
PLE-1MA120 Plena EASY 120w mixer amp, 2RU, includes rack ears $498.00 inc GST
LBB-1950/10 Desk top condenser microphone for use with mixer amplifiers $125.00 inc GST
 

The Plena 'EASY' Range of Public Address Mixer-Amplifiers.
6Ch. Models

Click to open Data Sheet
Click to open Data Sheet

Features:
6 microphone/line inputs plus 3 music source inputs
100 V, telephone and a call station input with priority & VOX
2 zones and announcement only output
Voice activated emergency override
High output power 120 and 240 Watts
2-tone chime built in (7 more chimes optional with call station)
Outputs for line out, music only out and insert point
24 V backup input with built in 24 V charger
Separate tone controls for microphones and music sources

PLE-2MA120 Plena EASY 120w 2 zone mixer amp, 6 inputs, 2RU, includes rack ears $790.00 inc GST
PLE-2MA240 Plena EASY 240w 2 zone mixer amp, 6 inputs, 2RU, includes rack ears $1,090.00 inc GST
LBB-1950/10 Desk top condenser microphone for use with mixer amplifiers $125.00 inc GST
 

The 'Plena' All in One Public Address & BGM System.

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PLN-2AIO120 Plena BGM/Paging System

The Plena BGM/paging system is the versatile All-in-One solution to cover all needs for background music (BGM), making announcements and paging people. This high performance, yet affordable, unit is very easy to install and operate.
This unit has a DVD-player that not only plays normal audio CDs & DVDs but also CD-Rs & DVD-Rs with MP3-encoded files. It has mono operation in accordance with public address needs and allows for a whole day of high quality uninterrupted music playback from a single MP3-disc. Up to 1000 songs on one DVD disc.
The digitally controlled FM/AM tuner uses a frequency synthesizer for accurate capture of radio stations and has 10 presets for FM and 5 presets for AM to store favourite programs. An auxiliary (music) input and tape output are provided for connecting external equipment.
The announcement part of the unit has 3 balanced microphone inputs. Microphone input 1 has a DIN socket on the rear for a priority microphone (e.g. the DST1)
All microphone inputs and the music source have their own volume control, with a shared bass and treble tone control and a shared master volume control.
The powerful 120 W output section has two transformer-isolated 100 V constant voltage outputs for driving 100 V loudspeakers in two separate zones. Both zones may be individually selected from the front panel and the output level in each zone can be individually set. Each zone also has a low voltage output for connection to 8 Ohm loudspeakers. A separate 100 V Call Only output is provided for addressing an area where BGM is not required but where priority announcements are. A voltage-free Call Active contact is available for overriding local volume controls during priority calls or other purposes. A LED VU-meter monitors the output.

Features:
All-in-one solution for music and paging
DVD player for audio CD/CD-R DVD/DVDR
FM/AM tuner with digital control
Dual-zone 120W mixer with volume control
Selectable priority switching on microphone
Optional 2-tone chime announcements

PLN-2AIO120 120 watt mixer amplifier with 2 selectable zone outputs like the LBB1914/10 but also with built in DVD player and digitally controlled AM/FM tuner. 3RU. $899.00 inc GST
LBB-1950/10 Desk top condenser microphone for use with mixer amplifiers $125.00 inc GST
 

The 'Plena' LBB-1925/10 system mixer/ pre-amplifier

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The Plena system pre-amplifier is a high performance, versatile call and BGM (background music) mono preamplifier, capable of fulfilling a wide variety of public address requirements. It provides dual channel operation for calls and BGM simultaneously to a maximum of six different zones, using two Plena booster amplifiers. Also single channel operation is possible with only one Plena booster.
The call channel provides two inputs for Plena call stations, CST1 (all-call) or CST6 (6-zone), with loopthrough capability, and a universal balanced input, having the choice of a 3-pin XLR connector for microphone or line level (selectable), or a 5-pin DIN-connector with allcall priority contact, that may also start one of the available chime attention signals.
The microphone input has a selectable speech filter for improved intelligibility, a volume control and bass and treble tone controls with shelving characteristics optimized for speech usage. The call channel is available on the balanced XLR master output.
The BGM channel provides three inputs on stereo RCA connectors, converted to mono, with front panel selection, volume control and bass and treble tone controls with shelving characteristics optimized for music. The BGM channel has a direct output on balanced XLR for dual channel operation, but may also feed the master output, with the lowest priority, for single channel operation.
By means of zone selector switches on the front panel the routing of BGM can be selected.
An emergency/telephone input with signal level detector (VOX) and rear volume preset may detect an audio signal and gets the highest priority to all zones. Two trigger inputs (contact closure) control alarm or time signals to selectable zones. Many different tones are available for selection. Furthermore a PC audio input with RS232 control has been provided for PC control of zones or automatic messaging in combination with the Plena message manager. All together six levels of priority are available for BGM, microphone, call stations, trigger inputs and emergency input.

The LBB-1925/10 has a set of relays for zone-switching the power amplifier output(s) to different loudspeaker groups.
Each of the zones can be switched between the call channel (upon call-station selection or all-call microphone or emergency activation), the BGM channel (upon front panel selection), or off. In order to get a message through although the local volume controls have been set to a low volume level for e.g. background music, override relay contacts are provided for each zone separately for overriding local loudspeaker volume controls. Both the 3-wire and 4-wire override schemes are supported. Upon a call or an activated trigger input these contacts will be activated for the appropriate zones, together with an additional voltage free contact (Call Active) for control purposes. A 24Vdc output is available to supply power to external relays, so no external power supply is required for that purpose. A headphone connector and LED VU-meter allows for monitoring of the master output.
 

Features:
6-zone system pre-amplifier, with single or dual channel operation
Two inputs for call stations
Universal input for microphone/line, with speech optimised tone control
Three inputs for BGM selection and music optimised tone control
Front panel zone selection for BGM and call station zone selection for calls
PC and trigger inputs for automated calls, alarm tones and chimes to selected zones
240VAC / 24VDC, 2RU, c/w rack mount brackets

LBB 1925/10 "Plena" system preamp / mixer, 6 zone paging system, includes rack ears, 2RUx430x270mm, 5kg $599.00 inc GST
LBB 1946/00 "Plena" 6 zone desktop microphone / call station $299.00 inc GST

 

The 'Plena' Range of Public Address Booster-Amplifiers.

Click to open Data Sheet, Other Models click on Pricing Below.

Plena Power Amplifiers, balanced XLR input and loop through output. Also features a 100v line input that allows for direct input connection of a remote 100v speaker line thereby increasing the locally available power output. LED VU metering and 70v/100v and 8 ohm outputs, 240VAC / 24VDC, 2RUcomes with rack mount brackets

LBB 1930/20 120 watt power amplifier, includes rack ears, 2RUx430x270mm, 10.5kg $445.00 inc GST
LBB 1935/20 240 watt power amplifier, includes rack ears, 2RUx430x270mm, 12.5kg $775.00 inc GST
LBB 1938/20 480 watt power amplifier, includes rack ears, 3RUx430x370mm, 25kg $1,400.00 inc GST
PLN-1P1000 1000 watt power amplifier, includes rack ears, 3RUx430x370mm, 25kg $2,520.00 inc GST
 

 
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All prices are inclusive of GST