JVC HR-6700U (c. 1981)
The JVC HR-6700U is a VHS videocassette recorder from the early 1980s. It is one of the few vintage JVC VCRs to get a full equipment profile in Audio magazine (Audio, April 1981, p.56). That profile, published in April 1981, called it JVC's finest VCR to date, particularly in picture reproduction, special-effects, and programming facilities (Audio, April 1981, p.58).
The manufacturer's specification sheet printed with that profile shows a T-120 cassette recorder that runs 2 hours at standard play or 6 hours in the long-play mode (Audio, April 1981, p.56). Audio specs were modest by hi-fi standards - 50 Hz to 10 kHz frequency response, signal-to-noise better than 40 dB, and a −6 dB high-impedance audio output (Audio, April 1981, p.56). The built-in tuner presets up to 12 VHF or UHF channels, and numbered labels are supplied. The playback circuitry senses the speed at which a given tape was recorded and switches to the correct playback speed automatically, whatever the speed switch says (Audio, April 1981, p.58).
Bert Whyte's "Video Scenes" column in the March 1981 issue mentioned using the HR-6700U while he compared videodiscs and VCRs. He suspected a fault, tried a Panasonic VCR, and got the same result. That pointed to the source material and not the JVC machine (Audio, March 1981, p.88).
Beyond those reviews, documentation is thin. The Archive has no service manual, original price, or confirmed production dates for the HR-6700U.
Known specifications (from period sources):
- Format: VHS (T-120 cassette)
- Maximum recording time: 2 hours (standard) or 6 hours (long play)
- Audio frequency response: 50 Hz–10 kHz
- Audio S/N: better than 40 dB
- Audio output: −6 dB, high-impedance
- Antenna input: VHF 75Ω unbalanced; UHF 200Ω balanced
- Tuner presets: up to 12 channels (VHF or UHF)
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