Bose DXA2120 manual Introduction, Bose FreeSpace DXA 2120 Digital Mixer/Amplifier

1.0 Introduction

1.1The Bose® FreeSpace® DXA 2120 Digital Mixer/Amplifier

The Bose® FreeSpace® DXA 2120 Digital Mixer/Amplifier integrates digital signal processing with two powered output channels. Designed as a mixer or router for business music applications, it features an LCD panel and controls behind the front cover for easy access.

The mixer/amplifier provides six inputs, including four Mic/Line inputs, one Page input, and one Direct input. The Direct input overrides all sources playing on the output channels. Each Mic/ Line input provides both RCA and Euroblock jacks.

Two output channels are wired for 120 watts at 4 ohms each. For 70/100 volt applications, a jumper is required for proper configu- ration. In 70/100V applications, the two outputs will operate at 100 watts per channel. A third output is available for an auxiliary line out.

Additional features include:

•Signal Mixing: In Mixer Mode, simultaneously combines up to four inputs for any of the three outputs.

•Signal Routing: In Dual Mono Select Mode, one or two inputs go to each of two outputs in different zones and can be remotely selected. In Stereo Select Mode, two stereo sources go to one output zone and can be remotely selected.

•Opti-voice®Paging: Provides a smooth transition between music and page signals.

•Dynamic Equalization: Maintains tonal balance at all listening levels.

•Bose Loudspeaker EQs: Provide equalization for Bose loudspeakers.

•AGC (Automatic Gain Control): When enabled, automatically compensates for low-level sources (i.e., microphone with low sensitivity).

•Room Equalization: Allows easy adjustment of tonal balance in each zone.

•Communications Port: Includes an RS-232 serial port reserved for system updates.

•Backup power: Provides an input terminal for a +24V DC backup power source.

1.2 Supplied with the product

Included connectors:

•3-terminal input connectors: (4) for wiring source equipment to the four Mic/Line input Euroblock jacks.

•4-terminal input connectors: (2) for wiring to the Page and Direct input jacks.

•6-terminal input connector: (1) for wiring user interfaces to the Remote input jack.

•5-terminal output connectors: (2) for wiring to the loud- speakers.

•3-terminal output connector: (1) for wiring to the AUX output jack.

Included placement aids:

•Non-skid rubber feet: (4) for stable placement on a solid, level surface.

•Rack ears: (2) with mounting hardware for installation in a rack.

1.3 Mixer/Amplifier accessories

Application-specific Bose accessories:

•Bose® Volume Control User Interface

A user interface with a volume control knob that fits into a standard U.S. double-gang junction box.

•Bose® Volume Control with A/B Select User Interface A user interface that fits into a standard U.S. double-gang junction box. It features volume control and A/B select knobs for remote source selection.

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