Yamaha K-640
Dolby HXPro Dolby B NR Dolby C logo Wired Remote Control Metal Tape Full Logic

This Yamaha K-640 is a auto-reverse stereo cassette deck with Dolby B/C and HX-Pro noise reduction, it was first sold by Yamaha in 1986 with a list price of USD $420 and discontinued 2 years later in 1988.

The main features of the Yamaha K-640 are: 2 heads, digital linear tape counter with 4 digits, automatic tape type selection and capable of handling normal, chrome and metal tapes, belt driven auto reverse transport.

Typical front loading cassette deck with the cassette compartiment located on the left side of the deck. Tape eject is operated mechanically and the cassette needs to be placed with the side to be played facing forward in the cassette well.

Level meters used on the K-640 are generic digital peak reading meters. Full-logic transport controls used on the K-640 let it respond to the slightest finger contact for fast and effortless transport function selection.

Dolby C-type used in the K-640 provides 20 dB of noise reduction above about 1,000 Hz, fully doubling the amount given by B-type. The Dolby HX PRO system provides precise bias control during recording to reduce distortion and improve linearity in the high-frequency range, the result is recorded sound that is highly faithful to the original. The 19kHz multiplex pilot slgnal present in FM stereo broadcasts can cause false triggering of the noise reduction system. The switchable MPX filter of the K-640 filters out the pilot signal, and assuring proper Dolby processing of FM stereo programs.

To make live recordings this deck has 2 microphone inputs to connect microphones with a jack connector. For undisturbed listening a jack connector for a pair of stereo headphones is supplied. Connection to other audio components for plaback can be achieved by a RCA cable and recording from a source by a RCA cable. All main transport commands can be issued remotely with a wired remote control.

Compact Cassette
  • HX Pro Dynamic Bias Servo
  • Natural Sound
  • RS

Historic events

1986 Nintendo releases its first video game console for the home, NES (Nintendo Entertainment System).
1987 Commodore announces the Amiga 2000 and 500 computers.
1988 Microsoft releases Windows 2.1.

Features of Yamaha K-640

Connectors
Connectivity
2 Mono Microphone Inputs AC Power Cord / Plug RCA Input/Output Connectors Headphones Wired Remote Control
Controls
Controls
3-Position Direction Selector
Display
Display
Digital Peak-Reading Meters Linear Tape Counter 4-Digıt Digital Counter Remaining Time
Electronics
Electronics
Record Protection
Cassette Exterior
Exterior
Silver Finish Orientation Left Black Finish Front Loading
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Auto Reverse Direction
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter Dolby-C Noise Reduction Dolby HX Pro®
Controls
Operation
Full Logic Transport Control Timer Recording/Playback Record Mute Intro Scan Electronic Fade-Out Electronic Fade-In
Power
Power Requirements
Alternating Current
Preamplifier
Preamplifier
Record Level Balance Control Master Record Level Control
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Automatic Tape Type Selection Normal Tape Capabılity Chrome Tape Capabılity Metal Tape Capabılity
Transport
Transport
Auto Reverse Auto Shutoff Mechanical Tape Loading Single Capsŧan Transport (x2) Belt Drive (Capsŧan)

Similar to Yamaha K-640 from the period 1986 - 1988

ebay Yamaha K-640 related items currently for sale Last update on Oct 19, 2021 4:53:34 AM CEST