Optonica RT-9100 Electronic Tape Processor

This Optonica RT-9100 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-9100 cassette deck 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 Optonica RT-9100 cassette deck are generic digital peak reading meters with peak hold for easy adjustment of optimum recording level. Full-logic transport controls used on the Optonica RT-9100 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 Optonica RT-9100 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-9100 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.

• Dual Capstan
• APMS (Automatic Programmable Music Sensor)
• Metal (Metal Tape)
• 4-Head System
• OPTO Peak Level Display