Optonica RT-7100
Dolby B NR Full Logic

This Optonica RT-7100 is a stereo cassette deck with Dolby B noise reduction, it was first sold by Optonica in 1981 and discontinued a year later.

The main features of the Optonica RT-7100 are: 2 heads, digital tape counter with 3 digits, manual tape type selection and capable of handling normal, chrome and ferro-chrome tapes, belt driven single-capstan transport.

Typical front loading cassette deck with the cassette compartiment located on the center 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-7100 are generic digital peak reading meters with peak hold for easy adjustment of optimum recording level. Full-logic transport controls used on the RT-7100 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-7100 by as much as 10 dB at the highest frequencies. 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 RT-7100 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.

Compact Cassette
  • APMS (Automatic Programmable Music Sensor)
  • OPTO Peak Level Display

Historic events

1981 Dave Smith proposes the Universal Synthesizer Interface that would become the MIDI standard in 1983.
1982 Seiko introduced the world’s first TV watch.

Features of Optonica RT-7100

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors DIN Input/Output Connector Headphones
Display
Display
3-Digıt Digital Counter Digital Peak-Reading Meters Peak Hold
Electronics
Electronics
Record Protection
Cassette Exterior
Exterior
Silver Finish Orientation Center Front Loading
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Record Play Pause Dolby B Fast Forward Chrome Tape MPX Rewind Ferro-Chrome Tape Normal Tape
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter
Controls
Operation
Music Scan Full Logic Transport Control Auto-Space
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
Manual Tape Type Selection Ferro-Chrome Tape Capabılity Normal Tape Capabılity Chrome Tape Capabılity
Transport
Transport
Auto Shutoff Mechanical Tape Loading Sìngle Capsŧan Transport Belt Drive (Capsŧan)

Similar to Optonica RT-7100 from the period 1981 - 1982