Optonica RT-3150
Dolby B NR

This Optonica RT-3150 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-3150 are: 2 heads, digital linear tape counter with 4 digits and memory stop, 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 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-3150 are analog needle VU reading meters with peak indicator for easy adjustment of optimum recording level. Mechanical transport controls for reliable RT-3150 transport function selection.

The Dolby-B system reduces tape hiss on tapes recorded on the RT-3150 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-3150 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
  • Japanese Market
  • APLD (Auto Program Locate Device)

Historic events

1979 The video game "Asteroids" is created.

Features of Optonica RT-3150

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors Headphones
Display
Display
Linear Tape Counter 4-Digıt Digital Counter Analog Needle Meters Digital Clock
Cassette Exterior
Exterior
Silver Finish Orientation Left Front Loading
Compact Cassette
General
Stereo Built-in Timer
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Peak Indicator Cassette Back Lighting
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter
Controls
Operation
Music Scan Auto-Play A-B Repeat Memory Stop Mechanical Transport Control
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 2-Position Equalization Selector
Transport
Transport
Auto Shutoff Mechanical Tape Loading Sìngle Capsŧan Transport Belt Drive (Capsŧan)

Similar to Optonica RT-3150 from the period 1979

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