The Bose FreeSpace IZA 250-LZ Integrated Zone Amplifier is a high-performance, easy-to-use audio solution designed for background and foreground music, as well as paging in various commercial environments. Delivering 2 x 50W into 4 ohms or 2 x 25W into 8 ohms, this Class-D amplifier features onboard digital signal processing (DSP) and selectable EQ presets that optimize performance when used with FreeSpace FS2 and FS4 loudspeakers.
It allows simple installation and setup without the need for a computer—thanks to front and rear panel controls for input selection, tone, and gain. Opti-Voice® paging ensures smooth transitions between music and announcements, while its compact, rack-mountable form factor makes it perfect for retail stores, restaurants, conference centers, schools, and more. Optional remote volume/source controls add convenience and flexibility for end-users.
| Weight | 2200 g |
|---|---|
| Dimensions | 310 × 214 × 45 mm |
| Brands |
Specs:
Amplifier Type: Class D
Number of Channels: 2
Rated Power: 50W per channel @ 4 Ω / 25W per channel @ 8 Ω
Frequency Response: 40 Hz – 20 kHz (+0/-3 dB) at 1 W, 1 kHz reference
THD+N: ≤ 0.3% at full rated power
Dynamic Range: 88 dB
Channel Separation (Crosstalk): ≤ -60 dBV at 1 kHz
Audio Inputs:
2 unbalanced line inputs (RCA)
1 balanced mic/line (XLR-1/4″ combo)
1 balanced mic (4-pin Euroblock – Page mic)
1 unbalanced auxiliary (3.5mm TRS)
Input Range:
Line: -10 dBV to +10 dBV
Mic/Line & Page: -60 dBV to +10 dBV
Auxiliary: 0 dBV to +10 dBV
Input Impedance:
Line & Aux: 20 kΩ
Mic/Line & Page: 2 kΩ
Audio Outputs:
2-terminal barrier strip for speaker output
RCA stereo pair (aux output)
Output Impedance: 4 Ω / 400 Ω (auxiliary)
Nominal Output Level:
2 × 50 W @ 4 Ω
0 dBV maximum (auxiliary)
Integrated DSP:
48 kHz / 24-bit A/D and D/A
EQ presets for FS2C, FS2P, FS2SE, FS4CE, FS4SE
Flat EQ, Dynamic EQ (low-end), Opti-Voice® EQ
Audio latency: 10.4 ms (analog in to analog out)
Controls – Front Panel:
Power switch
Source selector
Treble/Bass tone knobs
Mic/line gain knob
Master level knob
Controls – Rear Panel:
DIP switches for amp mode
EQ preset selector
Input gain controls (A/B/Page)
Output trim
Indicators: Power LED, Input Clip LED
Cooling: Natural convection (fanless)
Power Consumption: 15W idle, 200W max
Inrush Current:
7.6 A @ 120V AC
13.9 A @ 230V AC
AC Input: 100–240V AC (±10%), 50/60 Hz, IEC C14 inlet
Protections: Over-temperature, short circuit
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