Bose FreeSpace IZA 2120-HZ




Bose FreeSpace IZA 2120-HZ

Bose FreeSpace IZA 2120-HZ integrated zone amplifier (Product Code 719782-1410)

Bose FreeSpace IZA 2120-HZ for background/foreground music and paging applications, Bose® FreeSpace® IZA 2120-HZ integrated zone amplifier elevates the audio experience when using FreeSpace® loudspeakers. Optimized for commercial applications, FreeSpace IZA amplifiers feature selectable Loudspeaker EQ to enrich audio quality, Opti-voice® paging for clear speech intelligibility while providing seamless transitions and Dynamic EQ that ensures full and balanced music at any volume level.

True two-zone capability provides two independent outputs that each support volume/source selection remotes, EQ, tone controls, and paging/auxiliary routing options

Opti-voice® paging equalizes the vocal frequency range for clear speech intelligibility while providing seamless transitions

Dynamic EQ ensures full and balanced music at any volume level

Independent Loudspeaker EQ per output enriches audio quality and simplifies connection to Bose® loudspeakers: FreeSpace® 3 systems, FS3 subwoofer, DS 16, DS 40 and DS 100

Dual remotes support optional volume/source selection for independent, or combined, zone control which eliminates the need for bulky, inefficient, and sound-altering 70/100V in-line volume controls

Expansion-ready connectivity with FreeSpace ZA amplifiers to drive additional zones

Reliable 2 x 120 W Class-D amplification optimized for 70/100V high-impedance applications

Intuitive feature setup enables the amplifier to be configured without a PC for remote, paging, auxiliary input/output and automatic standby options

Auto-Standby feature allows the amplifier to consume less power when not in use

Simplified front panel interface provides end users with tone, source selection and master volume controls as well as a connection to mobile sources via a 3.5 mm connector

Remote muting allows the amplifier to be muted via a centralized control system


  • Retail stores
  • Restaurants and bars
  • Hospitality venues
  • Conference centers
  • Schools
  • Auxiliary zones

Architects’ and Engineers’ Specifications

The mixer/amplifier shall employ Class-D amplification together with a digital signal processing architecture running at 48 kHz / 24 bit. The mixer/amplifier shall incorporate a switch-mode power supply allowing normal operation from AC outlets ranging from 100 – 240 V (±10%) at 50/60 Hz. The amplifier shall have an IEC 320-C14 electrical power inlet and shall be equipped with a removable power supply cord. A power switch shall be located on the front panel. The product shall include protection from shorted loads and general overheating. The mixer/amplifier’s physical size shall be 1 RU in height by 1 RU in width and be capable of rack mounting. The product shall have venting with a single fan, continuous left-to-right airflow. Each output channel shall have output trim controls.

The mixer/amplifier shall have two output channels with a frequency response of 55 Hz to 20 kHz (+0/–3 dB) and drive 70/100 V distributed audio systems. The mixer/amplifier shall have THD+N at rated power less than or equal to 0.3%. Output connections shall be made via 2-pin touch-proof Euroblock connectors.

The mixer/amplifier shall meet or exceed the following performance specifications: channel separation (crosstalk) less than or equal to –60 dB below rated power at 1 kHz and dynamic range of 88 dB. The mixer/amplifier shall incorporate 3 line-level inputs (two RCA stereo, one 3.5 mm stereo) and one microphone input for paging applications. Two of the line level inputs shall be selectable via a switch on the front panel while the third input shall override line input channels upon connection. The nominal input sensitivity shall be 0 dBV for line level inputs and -40 dBV for microphone inputs. The microphone input shall be mounted on the rear, support dynamic microphones and select telephone systems with PTT switching. The microphone input shall bypass master volume control via a selector switch on the rear panel. All inputs shall have individual input gain controls with the exception of the 3.5 mm priority input connector on the front panel. Three LEDs shall be visible on the front panel – one (blue) for power/standby indication, the second (red) for input level over 9 dBV, and the third (red) for output level over –2 dBFS. The mixer/amplifier shall have an auxiliary line-output via two RCA connectors. The digital signal processor shall enable a user-selectable loudspeaker preset (Bose® FreeSpace® FS3/HPF, DS 16, DS 40, DS100 and FS3B) to be applied to the loudspeaker output and (via selector) the auxiliary output connectors. The front panel shall also have user-accessible treble, bass and master volume controls. The mixer/amplifier shall have two remote control inputs intended for use with the Bose Volume control with A/B switch user interface or third party switches/10k ohm linear taper potentiometers. The mixer/amplifier shall offer a master mute connection for use with external dry contacts to mute output of the amplifier and auxiliary output.

The mixer/amplifier chassis shall be constructed of painted steel. The dimensions of the mixer/amplifier shall allow for 19-inch (483 mm) EIA standard rack mounting. The mixer/ amplifier shall be 1.7 inches (44 mm) in height, 19.0 inches (483 mm) in width and 12.8 inches (324 mm) in depth. The mixer/amplifier shall weigh 9.0 pounds (4.1 kg). The mixer/amplifier shall be the Bose FreeSpace IZA 2120-HZ integrated zone amplifier.

Technical Summary

Frequency Response
55 Hz – 20 kHz (+0/–3 dB, @ 1 W reference 1 kHz)

Amplifier Power
2 x 120 W @ 70/100V

≤ 0.3 % (at rated power)

Dynamic Range
88 dB

Built-in Loudspeaker EQ
Bose FreeSpace® 3 systems, FS3 subwoofer, DS 16, DS 40 and DS 100

Input Channels
Line Inputs: 2 unbalanced, 2 balanced
Page Input: 1 balanced mic/line
Auxiliary Input: 1 unbalanced line

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