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Dolby B NR

This Optonica RT-2050 MK II is a stereo cassette deck with Dolby B noise reduction, it was first sold by Optonica in 1977 with a manufacturer suggested retail price of USD $300 and discontinued a year later.

The main features of the Optonica RT-2050 MK II are: 2 heads, mechanical 3 digit tape counter, manual tape type selection and capable of handling normal, chrome and ferro-chrome tapes with additional manual equalization selection, 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-2050 MK II are analog needle VU reading meters. Mechanical transport controls for reliable RT-2050 MK II transport function selection.

The Dolby-B system reduces tape hiss on tapes recorded on the RT-2050 MK II by as much as 10 dB at the highest frequencies.

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

Historic events

1977 AT&T completes it prototype of cell phone technology.
1978 The first satellite in the modern Navstar Global Positioning System (GPS) is launched.

Features of Optonica RT-2050 MK II

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors Headphones
Display
Display
3-Digıt Mechanical Counter Analog Needle Meters
Electronics
Electronics
Peak Limiter
Cassette Exterior
Exterior
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
Controls
Operation
Line / Mic Input Select Mechanical Transport Control
Power
Power Requirements
Alternating Current
Preamplifier
Preamplifier
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 Manual Tape Equalization Chrome Tape Capabılity
Transport
Transport
Mechanical Tape Loading Auto Stop Sìngle Capsŧan Transport Belt Drive (Capsŧan)

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