Onkyo Professional Debuts 7.1-Channel Multizone AV Receiver with A-Bus, RS-232, and More for Commercial Installations
Mar 3, 2005 10:18 AM
Onkyo Professional has introduced the TX–SR55 AV receiver, delivering a detailed and powerful set of control and multizone options for commercial multimedia applications including offices, restaurants, gyms, places of worship, or for studio use. It has full 7.1-channel processing, 7Wx85W of amplification, HD capable component video switching including upconversion of composite and S-Video sources, and one of the most flexible suites of multizone options available in any professional AV receiver.
For multizone applications, the TX-SR55 includes a built-in port for the flexible A-Bus audio distribution system employed in many commercial installations, and also features a fixed/variable Zone 2 output to feed a second zone receiver or amplifier. Separate bass, treble, and balance controls are offered for Zone 2, allowing installers to custom tailor the sound in the second room. In addition, with Onkyo Professional's Powered Zone 2 feature, two of the receiver's internal amplifier channels can be dedicated to powering a second room, eliminating the need for an additional amplifier, while simultaneously providing full 5.1-channel audio in the main zone.
As a powerful multichannel audio receiver, the TX-SR55 features 32-bit dual DSP processing, including Dolby Digital EX and DTS-ES expanded surround formats. Additionally, the receiver features Dolby ProLogic IIx and DTS Neo:6 for generating 5.1-, 6.1-, or 7.1-channel audio from stereo or multichannel sources. Sophisticated 192kHz/24-bit DACs from Wolfson are applied to all channels and incorporate Onkyo's proprietary Vector Linear Shaping Circuitry (VLSC) to generate a smoother and more detailed audio output than conventional D/A circuitry.
The TX-SR55's seven internal power amplifier channels deliver a continuous power output of 85W per channel into 8Ω loads, and 110W into 6Ω. It boasts a linear frequency response range of 5Hz to 100Hz, thanks to Onkyo's Wide Range Amplifier Technology (WRAT). The inclusion of a massive High Current Power Supply (HCPS) transformer, combined with high-grade filter capacitors, gives the receiver tremendous current reserves for audio transients and instantaneous power on demand.
The Onkyo Professional TX-SR55 includes inputs for five AV sources and two audio-only sources, including six assignable digital inputs, and one digital output. One AV input, including optical digital jack and S-Video, is located on the front panel for easy connection of additional devices such as a camcorder or portable audio player. There are three assignable component video inputs and one output, with a component video switching bandwidth of 50MHz to prevent degradation of HDTV and progressive scan DVD signals. Composite and S-Video signals are upconverted to component using a five-line digital comb filter and time-base correction (TBC) to deliver high quality component images to virtually any display.
The TX-SR55 features three programmable 12V trigger outputs for the main and second zones, IR control input and output jacks, and an RS-232 port to integrate the receiver with advanced control systems and touchscreens. The high-quality AM/FM tuner section has 40 random presets and features direct access tuning via IR and RS-232 control ports. The included backlit preprogrammed/learning remote control makes system integration and control simple and convenient.
The Onkyo Professional TX-SR55 is now available with a suggested price of $799.
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