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Dolby B NR Full Logic Metal Tape 3 Head

This Philips N5781 is a stereo cassette deck with Dolby B noise reduction, it was first sold by Philips in 1980 with a manufacturer suggested retail price of USD $570 and discontinued a year later.

The main features of the Philips N5781 cassette deck are: 3 heads and off-tape monitoring, digital tape counter with 3 digits and memory stop, 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 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 Philips N5781 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 Philips N5781 let it respond to the slightest finger contact for fast and effortless transport function selection. Playback speed may be adjusted with pitch control.

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 Philips N5781 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 N5781 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
  • Micro Computer
  • HiFi
  • 2 Motor Transport
  • Closed Loop Dual Capstan
  • 3 Head
  • Fluorescent Peak Meter

Historic events

1980 Dolby C Noise Reduction introduced by Dolby Laboratories.
1981 Dave Smith proposes the Universal Synthesizer Interface that would become the MIDI standard in 1983.

Features of Philips N5781

Calibration
Calibration
400Hz Test Tone 10kHz Test Tone Manual Bias Calibration Manual Level Calibration
Connectors
Connectivity
2 Mono Microphone Inputs AC Power Cord / Plug RCA Input/Output Connectors Headphones
Display
Display
3-Digıt Digital Counter Digital Peak-Reading Meters Peak Hold Meters Peak / VU Switchable
Electronics
Electronics
Record Protection
Cassette Exterior
Exterior
Silver Finish Orientation Left Front Loading
Compact Cassette
General
Stereo
Head Configuration
Head Configuration
3 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Record Play Pause Dolby B Metal Tape Cassette Back Lighting
Noise Resuction
Noise Reduction
Dolby-B Noise Reduction MPX Filter RIF Filter
Controls
Operation
Full Logic Transport Control Timer Recording/Playback Record Mute Memory Stop Pitch Control Real-Time Tape Monitoring Memory Play
Power
Power Requirements
Alternating Current
Preamplifier
Preamplifier
Microphone Level Adjust (Left/Right) Individual Input Level Controls Output-Level Control Master Record Level Control Headphone Volume Control
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Manual Tape Type Selection Ferro-Chrome Tape Capabilıty Normal Tape Capabilıty Chrome Tape Capabilıty Metal Tape Capabilıty
Transport
Transport
2x Motor Mechanism Auto Shutoff Mechanical Tape Loading Dual-Capsŧan Transport Belt Drive (Capsŧan)

Similar to Philips N5781 from the period 1980 - 1981