Sharp / Optonica RT-9
Dolby B NR Full Logic Wireless Remote Control Metal Tape 3 Head

This Optonica RT-9 is a stereo cassette deck with Dolby B noise reduction, it was first sold by Optonica in 1979.

The main features of the Optonica RT-9 are: 3 heads and off-tape monitoring, digital tape counter with 3 digits, manual tape type selection and capable of handling normal, chrome, ferro-chrome and metal tapes, belt driven dual-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-9 are generic digital peak reading meters with peak hold for easy adjustment of optimum recording level. Full-logic transport controls used on the RT-9 let it respond to the slightest finger contact for fast and effortless transport function selection.

To ensure the best response from the wide variety of tapes available adjustment of, bias and sensitivity, to optimum levels can be performed prior to recording.

The Dolby-B system reduces tape hiss on tapes recorded on the RT-9 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-9 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 wireless remote control.

Compact Cassette
  • Japanese Market
  • Dual Capstan
  • 4-Head System
  • OPTO Peak Level Display
  • Metal (Metal Tape)

Historic events

1979 Sony introduced the Walkman

Features of Optonica RT-9

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

Shop Optonica RT-9 items currently for sale

Nothing for sale

Similar to Optonica RT-9 from the period 1979