Bose FreeSpace ZA 250‎-LZ and ZA 190‎-HZ zone amplifiers are designed to provide basic amplification and sound system expansion when using front‎-end signal processing from products such as the FreeSpace IZA 250‎-LZ / IZA 190‎-HZ integrated zone amplifiers‎,‎ the FreeSpace 4400 business music system and ControlSpace engineered sound processors‎.‎

Features

• Premium sound quality from a reliable‎,‎ high quality Class‎-D amplifier designed to expand sound systems for loudspeaker installations
• Expandable amplification allows for easy system expansion when coupled with a FreeSpace IZA 250‎-LZ or IZA 190‎-HZ integrated zone amplifier‎.‎ The two amplifiers will function together as one system
• Compact‎,‎ lightweight design enables the FreeSpace 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
• Two models available‎,‎ 4/8 &Omega‎;‎ or 70/100 V output‎,‎ allow for better fit options for specific installations

Technical Specifications‎:‎

Power Rating

• Amplifier Power‎:‎ 2 x 50 W @ 4 Ω‎,‎ 2 x 25 W @ 8 Ω

Audio Performance Specifications

• Frequency Response‎:‎ 20 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

Audio Inputs

• Line Inputs‎:‎ 1 Unbalanced
• Connectors‎,‎ Input‎:‎ Stereo RCA
• Input Range‎:‎ ‎-10 dBV ‎- +10 dBV
• Input Impedance‎:‎ 20 kΩ
• Maximum Input Level‎:‎ +10 dBV
• Nominal Input Level‎:‎ 0 dBV

Audio Outputs

• FreeSpace ZA 190‎-HZ zone amplifier‎:‎ 2
• Connectors‎,‎ Output‎:‎ 2‎-terminal barrier strip
• Nominal Output Level‎:‎ 2 x 50 W @ 4Ω ‎(‎min‎)‎‎;‎ 2 x 25 W @ 8Ω

Indicators and Controls

• LED Status Indicators‎:‎ Power ‎- blue
• Controls‎,‎ Front Panel‎:‎ Power On/Off
• Controls‎,‎ Rear Panel‎:‎ Mono/Stereo amplifier mode switch ‎(‎ZA 250‎-LZ only‎)‎‎,‎ 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

Physical

• Rack Space Units 1 RU high‎,‎ half rack wide
• Dimensions 1.8" H x 8.4" W x 11.9" D ‎(‎45 mm x 214 mm x 302 mm‎)‎
• Net Weight‎:‎ 4.4 lb ‎(‎2.0 kg‎)‎