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Dolby B NR

This Philips N5631 is a stereo cassette deck with Dolby B noise reduction, it was first sold by Philips in 1977 with a list price of USD $369 and discontinued 4 years later in 1981.

The main features of the Philips N5631 are: 2 heads, digital tape counter with 3 digits, tape type selection and capable of handling normal and chrome tapes.

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.

The Dolby-B system reduces tape hiss on tapes recorded on the N5631 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.

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.
1979 Intel released the first 16-bit processor, the 8086.
1980 Worldwide sale of Rubik's Cube starts.
1981 Dave Smith proposes the Universal Synthesizer Interface that would become the MIDI standard in 1983.

Features of Philips N5631

Connectors
Connectivity
2 Mono Microphone Inputs Headphones
Display
Display
3-Digıt Digital Counter
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
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Normal Tape Capabılity Chrome Tape Capabılity
Transport
Transport
Auto Shutoff Belt Drive (Capsŧan) Mechanical Tape Loading

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