The FreeSpace IZA 250-LZ / IZA 190-HZ integrated zone amplifier provides signal processing, routing, paging and amplification for a wide range of commercial applications such as retail stores, restaurants and bars, hospitality venues, conference rooms, schools and auxiliary zones. The integrated zone amplifier offers a variety of easy-to-use input connections (mic/line/page), input gain and output level adjustments, and operational modes. Built-in FreeSpace FS2 and FS4 loudspeaker EQ presets can be selected for loudspeaker optimization.

With a switch on the rear panel, selectable Bose Professional loudspeaker EQ presets optimize performance of FreeSpace FS2 and FS4 loudspeakers

Bose Professional Dynamic Equalization circuitry automatically adjusts tone based on the output level to maintain tonal balance at all volume levels

Opti-Voice paging automatically provides a smooth transition between music and page signals

System set up is done locally from the front and rear panels. No computer required

Four rear panel DIP switches offer flexible operation modes: Page Normal/Bypass Master, Output Mono/Stereo, Front Mic Mix/Duck, Aux Out EQ/Flat

Five inputs: two stereo line inputs, one mic/line input, one page input and one auxiliary stereo line input

Input source levels can be adjusted with independent gain controls

Output level (trim) controls available for adjusting individual channel outputs relative to the overall master level

Source select and master output level can be easily controlled from the front panel

Volume control with A/B switch enables access to amplifier volume level and source selection from remote locations

Front panel allows for quick connection of hand-held microphones via an XLR/TRS combination connector

Auxiliary input on front panel allows quick connection with mobile devices

Fine tune the sound with front panel treble and bass tone control knobs (±6 dB @ 100 Hz and 7 kHz)

Amplifier outputs can be muted remotely via a contact closure

High- and low-impedance models available. Choose between 2 channels each at 50 watts (model IZA 250-LZ, 4Ω ) or 1 channel at 90 watts (model IZA 190-HZ, 70/100V systems) for loudspeaker installations

Compact, lightweight design. Place unit out of the way—on a table, desk, counter or shelf

Easily install single amplifier—or two amplifiers side-by-side—in a 1 RU rack with optional Rack Mount Kit accessory

Natural convection design—no fan noise

The IZA 250-LZ comes with an amplifier unit, AC power cord, plastic feet with locking pins (4), installation and operating guide, 4-pin Euroblock, 2-pin Euroblock, 4 blue spade lugs (16–14 AWG) and 4 red spade lugs (22–16 AWG). The IZA 190-HZ comes with an amplifier chassis, AC power cord, plastic feet with locking pins (4), installation and operating guide, and 4-pin Euroblock connector.

The unit does not come with rack ears in the box. For rack-mounting applications, a separate Rack Mount Kit is available which comes with hardware to mount one or two amplifiers in a 1 RU space. It also comes with link brackets for affixing two amplifiers side by side.

The IZA integrated zone amplifier features a fixed global compressor/limiter, FreeSpace FS2 and FS4 loudspeaker equalization presets, dynamic equalization, Opti-Voice paging, detection and prioritization algorithms, and AGC (Automatic Gain Control).

The IZA integrated zone amplifier can easily be adjusted using front and rear panel controls. Source selector and master volume control, located on the front panel, allow a customer to adjust their system for daily operation. Bose Professional ControlCenter CC-2 zone controllers provide volume and A/B source selection for FreeSpace and ControlSpace products.

Connections can easily be made to the front and rear panels. No computer is required. The amplifier comes with plastic feet for surface placement. An optional Rack Mount Kit accessory is also available to mount one or two amplifiers in a standard mounting rack.

The FreeSpace IZA integrated zone amplifier is designed to provide optimized performance of FreeSpace FS2 and FS4 loudspeakers. A simple switch allows the selection of either loudspeaker, or a generic high-pass mode for use with other passive loudspeakers.

The integrated zone amplifier system will reboot when the power returns and audio will resume.

IZA 250-LZ

Amplifier power: 2 × 50 W @ 4 Ω; 2 × 25 W @ 8 Ω

Frequency response: 40 Hz – 20 kHz (+0/-3 dB, @ 1 W reference 1 kHz)

Output channels and connectors: 2 ch/zones, 2-terminal barrier strips

THD+N: ≤ 0.3% (at full-rated power)

Input channels and connectors

Line: 2 unbalanced RCA pair

Mic/line: 1 balanced combo XLR – 1/4-inch (6.5 mm) TRS

Page: (1) 4-pin Euroblock

Auxiliary: 1 unbalanced 1/8-inch (3.5 mm) TRS

IZA 190-HZ

Amplifier power: 1 × 90 W @ 70/100 V

Frequency Response: 60 Hz – 20 kHz (+0/-3 dB, @ 1 W reference 1 kHz)

Output Channel and Connectors: 1 channel, 3-pin inverted Euroblock

THD+N: ≤ 1% (at full-rated power)

Input Channels and Connectors

Line: 2 unbalanced RCA pair

Mic/line: 1 balanced combo XLR – 1/4-inch (6.5 mm) TRS

Page: (1) 4-pin Euroblock

Auxiliary: 1 unbalanced 1/8-inch (3.5 mm) TRS

Accessories for the FreeSpace IZA include: Rack Mount Kit (PC 353689-0410), ControlCenter CC-1 and CC-2 zone controllers

There are 5 variants available for each model:

FreeSpace IZA 250-LZ integrated zone amplifier

US 120V product code: 344871-1420

AU 240V product code: 344871-2420

Japan 100V product code: 344871-3420

EU 230V product code: 344871-4420

UK 230V product code: 344871-5420

FreeSpace IZA 190-HZ integrated zone amplifier

US 120V product code: 344871-1410

AU 240V product code: 344871-2410

Japan 100V product code: 344871-3410

EU 230V product code: 344871-4410

UK 230V product code: 344871-5410

Front-panel controls on the IZA 250-LZ and IZA 190-HZ are identical and include the following:

POWER SWITCH – ON/OFF AC power

POWER – LED indicates if unit is active

INPUT CLIP — LED indicates when any input source approaches the threshold value of -3 dBFS

MIC/LINE INPUT – Combination XLR-TRS connector for use with dynamic microphones

MIC/LINE INPUT GAIN – Allows gain adjustment (0 dB to +50 dB) of microphones connected to the MIC/LINE INPUT

AUX INPUT – 1/8-inch (3.5 mm) stereo line-level input connector. Connection mutes INPUT A and INPUT B for priority override

INPUT A/B* – Allows selection of rear line-input channels A or B

TREBLE/BASS – Allows tonal adjustments of output channels. Provides ±6 dB adjustment at 7 kHz and 100 Hz

MASTER LEVEL* – Controls the overall system volume for both the loudspeakers and the variable AUX OUT connector

* When using a REMOTE connection with the system, the INPUT A/B selector switch and MASTER LEVEL control become disabled.

INPUT A/B – Two channels of stereo RCA input connectors

INPUT GAIN – Allows for -20 dB to +20 dB of adjustment to each INPUT A/B input

PAGE INPUT – Euroblock mic/line input with trigger contact closure for use with push-to-talk microphones

PAGE INPUT GAIN – Allows for 0 dB to +50 dB of gain control of page input signal

DIP switches – A bank of four switches set the amplifier configuration

REMOTE – Input jack for Volume control with A/B switch

AUX OUT – Variable output line-level signal for routing signal to additional audio equipment

EQ – Provides loudspeaker equalization presets for the FreeSpace FS2 and FS4 loudspeakers. Can be set to high-pass filter (HPF) for a flat response

MUTE – Contact closure connection that upon trigger (short) will mute all outputs (including AUX OUT)

OUTPUT 1 / OUTPUT 2 TRIM – Allows for up to 20 dB attenuation of the individual loudspeaker outputs relative to the master level

OUTPUT – Speaker connections for up to two 4Ω or 8Ω loudspeaker loads (IZA 250-LZ) or one 3-pin Euroblock for 70/100 V systems (IZA 190-HZ)

AC Mains receptacle — AC line voltage input

The Limited Warranty for Professional Systems products lasts five years from the date of purchase for the IZA integrated zone amplifier.

The IZA amplifier is appropriate for use in many applications including retail stores, restaurants and bars, hospitality venues, conference rooms, schools and auxiliary zones for large sound systems.

Four rear panel DIP switches offer flexible operation modes:

PAGE-MIC NORMAL / BYPASS MASTER: determines if the page input source will follow the master level output, or be set at independent fixed output level to ensure announcements are heard

OUTPUT MONO / OUTPUT STEREO: adjusts the AUX and loudspeaker outputs for mono or stereo input signals

FRONT MIC MIX / FRONT MIC DUCK: determines if front panel microphone input will be mixed in with the music source or if the music output level will be automatically lowered (ducked) when someone speaks into the microphone

AUX OUT EQ / AUX OUT FLAT: determines if AUX OUT will have a selected loudspeaker EQ preset applied to it or not. Allows for optimization of FreeSpace DS 16 and DS 40 loudspeakers when used with an additional zone amplifier

Bose Professional Dynamic EQ is a DSP function that automatically adjusts equalization based on the output to maintain tonal balance at all volume levels.

Opti-Voice paging uses DSP to automatically provide a smooth transition between music and paging signals.

No. All set up is done locally from the front and rear panels.

This control switch, located in the rear panel DIP switch bank, adjusts the gain of the amplifier’s AUX and loudspeaker outputs for a mono or stereo input signals. Use MONO when your source has only one RCA channel attached to either INPUT A or INPUT B. Use STEREO when both RCA connectors are used.

The amplifiers are fully protected against loudspeaker output shorts, high temperature damage, and excessively low or high AC line voltage conditions. The IZA 2120-HZ also has an integrated 55 Hz high pass filter to avoid potential transformer saturation.

No. This product must be used indoors. It is neither designed nor tested for use outdoors, in recreational vehicles or on boats.

Yes. The IZA 250-LZ has two output channels and individual output trim controls. It can be used as a dual-mono amplifier/mixer. Paging signals however, will run to both zones when used in this fashion.

The IZA amplifier does not supply phantom power for use with condenser microphones. The IZA 250-LZ / IZA 190-HZ will support low impedance signals from dynamic microphones.