Products - Public Address System, Amplifier - LBB 1912

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RANGE OF SINGLE AND DUAL ZONE MIXER AMPLIFIERS FROM 30W TO 120W

FOUR BALANCED INPUTS FOR MICROPHONE OR LINE

SELECTABLE PRIORITY AND VOX SWITCHING ON MICROPHONE INPUT 1

OPTIONAL 2-TONE CHIME TO PRECEDE ANNOUNCEMENTS

SEPARATE OVERRULING EMERGENCY INPUT WITH VOX

CHOICE OF CD,TUNER OR AUXILIARY MUSIC INPUTS

PLENA mixer amplifier LBB1903/x0, LBB1906/x0, LBB1912/x0 and LBB1914/x0 The PLENA mixer amplifier is a high performance, versatile four microphone inputs mono mixer
amplifier, capable of fulfilling a wide variety of public address requirements for surprisingly low cost. A  wide choice of input connectors are available: balanced 3-pin XLR and phone jack for microphones, 5-pin DIN for a priority microphone, and stereo Cinch for music sources (converted to mono). All microphone inputs have phantom power supply to provide power to condenser microphones and selectable speech filters for improved intelligibility. Microphone inputs 3 and 4 can also be switched to line sensitivity. Furthermore separate music inputs with their own input selector and volume control are available.

By internal selection, microphone input 1 can be given priority over all other microphone and music inputs. Priority is given upon contact closure on the 5-pin DIN connector or if the signal level on input 1 exceeds a predefined value (VOX). A 2-tone chime can be selected to precede a priority announcement, on priority contact closure. A telephone or emergency input with VOX activation is provided that takes overall priority, even over microphone 1. It has its own preset volume control, which is independent of the master volume. An interconnection input and output facilitates the connection of external sound processing equipment, such as an equaliser or acoustic feedback suppressor between the pre-amplifier section and the power amplifier.

A tape output is provided and a LED VUmeter allows for monitoring of the master output.
The PLENA mixer amplifiers come in a range of output powers, 30W (LBB1903/x0), 60W
(LBB1906/x0) or 120W (LBB1912/x0). This power is available on 70V and 100V constant  voltage outputs and on a low impedance output for 8Ohm load. The LBB1914/x0 offers the same functionality as the LBB1912/x0 but also has two front panel switches to
direct the amplifier output to two separate zones, a useful feature if some announcements or background music should only be heard in part of a building.

Additional PLENA power amplifiers (LBB1930/x0 with 120W output power or LBB1935/x0 with 240W) can be connected in a loop through arrangement to the balanced line output if more ouput power is needed than the built-in power stage can deliver.

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