Harman Kardon HK705
Dolby B NR Dolby HXPro Metal Tape

The Harman Kardon HK705 is a stereo cassette deck with Dolby B and HX-Pro noise reduction, it was introduced by Harman Kardon in 1980 with a list price of USD $450 and discontinued a year later.

The main features of the Harman Kardon HK705 are: 2 heads, analog 3 digit tape counter and memory stop, manual tape type selection with support for normal, chrome, ferro-chrome and metal tapes, belt driven single-capstan transport.

Typical front loading cassette deck with the cassette compartiment located on the left side of the deck. Tape loading/unloading is operated motorized and the cassette needs to be placed horizontally in the drawer.

Level meters used on the HK705 are generic digital peak reading meters. Mechanical transport controls for reliable HK705 transport function selection.

The Dolby-B system reduces tape hiss on tapes recorded on the HK705 by as much as 10 dB at the highest frequencies. 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. A Subsonic filter is provided in the HK705 to prevent infrasonic signals generated when playing a warped record. These signals can upset the Dolby system and prevening it from functioning properly. To further maintain recording accuracy, the HK705 incorporates a switchable multiplex filter. When you record FM stereo broadcasts, the MPX filter of the HK705 can be swiched on to prevent the standard 19kHz FM pilot signal from interfering with the noise reduction system.

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.

Compact Cassette
  • Sendust Head

Historic events

1980 Pac-Man arcade game developed by Namco released in Japan.
1981 Dave Smith proposes the Universal Synthesizer Interface that would become the MIDI standard in 1983.

Features of Harman Kardon HK705

2 Mono Microphone Inputs Ground Terminal RCA Input/Output Connectors Headphones
3-Digıt Mechanical Counter Digital Peak-Reading Meters
Cassette Exterior
Silver Finish Orientation Left Front Loading
Compact Cassette
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Record End of Tape Indicator
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter Subsonic Filter Dolby HX Pro®
Record Mute Memory Stop Mechanical Transport Control
Individual Input Level Controls Output-Level Control
Tape Speed
1⅞ ips - 4.76 cm/s
Manual Tape Type Selection Ferro-Chrome Tape Capabılity Normal Tape Capabılity Chrome Tape Capabılity Metal Tape Capabılity
Motorized Tape Loading Auto Shutoff Horizontal Tape Transport Sìngle Capsŧan Transport Belt Drive (Capsŧan)

Similar to Harman Kardon HK705 from the period 1980 - 1981