Optonica RT-E85
Dolby B NR Full Logic

The Optonica RT-E85 is a stereo cassette deck with Dolby B noise reduction, it was introduced by Optonica in 1979.

The main features of the Optonica RT-E85 are: 2 heads, analog 3 digit tape counter, tape type selection with support for normal, chrome and ferro-chrome tapes, belt driven single-capstan 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 RT-E85 are analog needle VU reading meters. Full-logic transport controls used on the RT-E85 let it respond to the slightest finger contact for fast and effortless transport function selection.

The Dolby-B system reduces tape hiss on tapes recorded on the RT-E85 by as much as 10 dB at the highest frequencies. To further maintain recording accuracy, the RT-E85 incorporates a switchable multiplex filter. When you record FM stereo broadcasts, the MPX filter of the RT-E85 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
  • APSS (Auto Program Search System)

Historic events

1979 Sony introduced the Walkman

Features of Optonica RT-E85

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors DIN Input/Output Connector Headphones
Display
Display
3-Digıt Mechanical Counter Analog Needle Meters
Cassette Exterior
Exterior
Silver Finish Orientation Left Front Loading
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter
Controls
Operation
Music Scan Full Logic Transport Control Timer Recording/Playback
Preamplifier
Preamplifier
Microphone Level Adjust (Left/Right) Individual Input Level Controls Output-Level Control
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Ferro-Chrome Tape Capabılity Normal Tape Capabılity Chrome Tape Capabılity
Transport
Transport
Auto Shutoff Mechanical Tape Loading Sìngle Capsŧan Transport Belt Drive (Capsŧan)

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