Onkyo TX-RV47 Computer Controlled AV Tuner Amplifier

Features

Headphone jack, 16 Radio Presets, Image Expander, Bass Expander, Simulated Stereo, 4-Channel Speaker Matrix

Signal Type

AM/FM

Model

TX-RV47

This vintage amplifier kicks out the jams! Powerful, classic, and in excellent working order, use this amplifier as the new centerpiece for your badass Hi-Fi setup! Japanese craftsmanship ensures this unit will last a long time and provide superior service. All the buttons, faders, and knobs move smoothly and are in working order. Features 16 Radio Presets, Image Expander, Bass Expander, Simulated Stereo, and a 4-Channel Speaker Matrix. They don't make 'em like this anymore! Onkyo TX-RV47 A/V receiver Review: Onkyo’s TX-RV47 combines a highly versatile audio and video control center with an amplifier rated to deliver 55 watts per channel continuous output into 8-ohm loads from 20 to 20,000 Hz with no more than 0.08 percent total harmonic distortion. It carries dynamic-power ratings (at 1,000 Hz) of 90 watts per channel into 4 ohms or 73 watts into 8 ohms. In addition to all the usual control features, it has sound-processing circuits that can simulate stereo from mono programs, expand the sonic image of a stereo program, and dynamically enhance the bass response. There is also a four-channel matrix system designed to extract “surround sound” from encoded stereo movie soundtracks as well as ordinary two-channel stereo programs. The TX-RV47’s digital-synthesis AM/FM tuner has both automatic and manual tuning modes and sixteen station presets that can be assigned to either band. The preamplifier has inputs for a phono cartridge, a CD player, and two audio tape decks, with dubbing possible from Tape 1 to Tape 2. It can also control two VCR’s and a videodisc player (VDP), channeling their video outputs to an external TV receiver or monitor and their audio to the hi-fi system’s speakers. Videocassettes can be dubbed from either VCR to the other, and the sound portion of any video program can be replaced by a program from any of the audio inputs. Except for three small horizontal sliders for bass, treble, and balance, all the receiver’s controls are soft-touch keys or pushbuttons, and most of their functions are duplicated on the supplied wireless remote control. Although preset stations cannot be randomly accessed from the remote control, it can step through the presets sequentially in either direction or else scan them automatically with a 5-second pause on each station. The display window on the front panel provides complete information on the receiver’s operating status. In addition to the usual audio input and output phono jacks, the rear apron of the TX-RV47 contains jacks for the video inputs and outputs from the VDP and VCR’s. A slide switch for each VCR selects either mono or stereo audio output (stereo is usable only with a hi-fi VCR), and a third switch disables the audio “beep” that normally accompanies any operation of a tuning or input-selector button. There are insulated spring terminals for the two pairs of speaker outputs and four a.c. outlets (three of them switched). The binding-post antenna terminals for AM loop and 300-ohm FM antennas are supplemented by an F-type jack for use with 75-ohm coaxial inputs. Finally, there are two integral cables, terminated in DIN plugs, to connect a compatible Onkyo record player or cassette deck for control by the receiver’s remote unit. The Onkyo TX-RV47 measures 17-1/8 inches wide, 15-3/8 inches deep, and 4-3/4 inches high, and it weighs 21 pounds. Price: $500. Lab Tests The Onkyo TX-RV47 is a relatively large and heavy receiver for its rated power, and as a result it became no more than moderately warm at any time during our tests, including the 1-hour preconditioning period at one-third rated power. The audio amplifiers had no difficulty driving loads as low as 2 ohms at power levels considerably exceeding their 8-ohm ratings. The amplifier’s dynamic headroom (2.14 dB) was also excellent for a moderate-power receiver. The equalization accuracy of the phono preamplifier was so good that we had to plot its response on the expanded scale used for CD players in order to measure its departure from the ideal RIAA response. In all of our significant other measurements, the TX-RV47 either met or surpassed its rated specifications. The loudness-compensation control boosted both low and high frequencies as the volume setting was reduced, although the effect was only slight until the volume was set at least 30 dB below its maximum. Below this point the response was fixed, with a maximum bass boost of 7 dB and a treble boost of 5 dB. The simulated stereo circuit is a comb filter that modifies the frequency response of each channel to create the illusion of a “true” stereo signal.

Brand

Onkyo