Bose FreeSpace IZA 250-LZ Integrated Zone Amplfiier


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Dale #:BOSE-3448711420

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  • For background/foreground music and paging applications, the Bose® FreeSpace® IZA 250-LZ and IZA 190-HZ integrated zone amplifiers are designed to deliver premium sound, provide simplified set up and easy daily operation, and offer the flexibility to expand when more loudspeakers are required. When used with FreeSpace DS 16 and DS 40 loudspeakers, even further sound optimization is possible through onboard selectable EQ presets.


    • Amplification for premium sound from a reliable, high quality Class-D amplifier provides optimized performance and premium sound quality through the use of internal digital signal processing
    • Installation made simple with set up done locally from the front and rear panels of the amplifier—no computer is required
    • Opti-voice® paging provides smooth automatic transition between the music and page signals
    • End-user friendly front panel allows users to connect devices easily, make tonal adjustments or select between two sources. Optional wall mountable Bose
    • Volume control with A/B switch user interface allows volume and source selection controls to be placed away from the amplifier for user convenience
    • Compact, lightweight design enables the FreeSpace integrated zone amplifier to be placed out of the way—on a table, desk, counter, shelf or in an equipment rack using the optional Rack Mount Kit accessory
    • Easy connectivity and expansion are possible for applications where a second set of output channels are required. An auxiliary line output is provided to share signals with an optional FreeSpace ZA 250-LZ


    • Retail stores
    • Restaurants and bars
    • Hospitality venues
    • Conference centers
    • Schools
    • Auxiliary zones
  • Amplifier Power 2 x 50 W @ 4 Ω, 2 x 25 W @ 8 Ω
    Audio Performance Specifications  
    Frequency Response 0 Hz - 20 kHz (+0/-3 dB, @ 1 W reference 1 kHz)
    THD+N ≤0.3 % (at full rated power)
    Channel Separation (Crosstalk) ≤-60 dBV (below rated power, 1 kHz)
    Dynamic Range 88 dB
    Integrated DSP  
    A/D and D/A Converters 24-bit / 48 kHz
    Processing Functions Loudspeaker EQ, Bose® Opti-voice® paging, Dynamic equalization
    Loudspeaker Presets FreeSpace DS 16 and DS 40 loudspeakers, High-Pass Filter (HPF)
    Audio Latency 10.4 ms - (any input to speaker output or aux output)
    Audio Inputs  
    Input Channels Line Inputs: 2 Unbalanced line
    Mic/Line Inputs: 1 Balanced mic/line
    Page Inputs: 1 Balanced mic
    Auxiliary Input: 1 Unbalanced line
    Connectors, Input Line Inputs: 2 Stereo RCA
    Mic/Line Inputs: Combo XLR - 1/4" (6.5mm) TRS
    Page Inputs: 4-pin Euroblock
    Auxiliary Input: 1/8" (3.5mm) TRS
    Input Range Line Inputs: -10 dBV - +10 dBV
    Mic/Line Inputs: -60 dBV - +10 dBV
    Page Inputs: -60 dBV - +10 dBV
    Auxiliary Input: 0 dBV - +10 dBV
    Adjustment Range Line Inputs: -20 dB - +20 dB
    Mic/Line Inputs: 0 dB - +50 dB
    Page Inputs: 0 dB - +50 dB
    Auxiliary Input: Fixed
    Input Impedance Line Inputs: 20 kΩ
    Mic/Line Inputs: 2 kΩ
    Page Inputs: 2 kΩ
    Auxiliary Input: 20 kΩ
    Maximum Input Level Line Inputs: +10 dBV
    Mic/Line Inputs: +10 dBV
    Page Inputs: +10 dBV
    Auxiliary Input: +10 dBV
    Sensitivity Line Inputs: n/a
    Mic/Line Inputs: n/a
    Page Inputs: n/a
    Auxiliary Input: 0 dBV
    Nominal Input Level Line Inputs: 0 dBV
    Mic/Line Inputs: -40 dBV
    Page Inputs: -40 dBV
    Auxiliary Input: 0 dBV
    Audio Outputs  
    Amplifier Outputs 2
    Auxiliary Output 1 Unbalanced
    Connectors, Output Amplifier: 2-terminal barrier strip
    Auxiliary: Stereo RCA
    Output Impedance Amplifier: 4 Ω
    Auxiliary: 400 Ω
    Nominal Output Level Amplifier: 2 x 50 W @ 4Ω (min); 2 x 25 W @ 8Ω
    Auxiliary: 0 dBV (max)
    Indicators and Controls  
    LED Status Indicators Power - blue, Input clip - red (-3 dBFS)
    Controls, Front Panel Power On/Off, Input Select (A/B), Tone Controls (Treble/Bass), Mic/Line Gain, Master Level
    Controls, Rear Panel Amplifier Mode DIP switch, Loudspeaker EQ preset selector, Input Gain (A/B/Page mic), Output trim
    Electrical Specifications  
    Mains Voltage 100 V AC - 240 V AC (+/- 10%, 50/60 Hz)
    AC Power Consumption 15 W (Idle), 200 W (Max)
    Mains Connector Standard IEC (C14)
    Maximum Inrush Current 13.9 Amps (230 V / 50 Hz), 7.6 Amps (120 V / 60 Hz)
    Overload Protection High temperature, short
    Rack Space Units 1 RU high, half rack wide
    Dimensions 1.8" H x 8.4" W x 12.2" D (45 mm x 214 mm x 310 mm)
    Shipping Weight 6.7 lb (3.0 kg)
    Net Weight 4.8 lb (2.2 kg)
    Cooling System Natural convection
    Inputs (Control) Remote input for Volume Control with A/B Select user interface, Mute input for amplifier muting via contact closure
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