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Dynamic Noise Limiter (DNL)

The Hitachi D-2300 is a stereo cassette deck with DNL noise reduction, it was introduced by Hitachi in 1974.

The main features of the Hitachi D-2300 are: 2 heads, analog 3 digit tape counter and memory stop, manual tape type selection with support for normal and chrome tapes, belt driven single-capstan transport.

Typical of this deck is the 70's top loading layout 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 D-2300 are analog needle VU reading meters. Mechanical transport controls for reliable D-2300 transport function selection.

Unlike the various Dolby systems, which require encoding and decoding, the Dynamic noise limiter (DNL) used by Hitachi in the D-2300 works on playback only and reduces noise by as much as 10 dB.

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
  • Full Auto Stop & Ferrite Head

Historic events

1974 DuPont introduces chromium dioxide (CrO2) cassette tape.

Features of Hitachi D-2300

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors DIN Input/Output Connector Headphones
Display
Display
3-Digıt Mechanical Counter Analog Needle Meters
Cassette Exterior
Exterior
Orientation Left Top Loading Wood Case
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Record Tape Run Indicator
HighCom NR
Noise Reduction
DNL Noise Reduction
Controls
Operation
Memory Stop Mechanical Transport Control
Power
Power Requirements
Alternating Current
Preamplifier
Preamplifier
Individual Input Level Controls
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Manual Tape Type Selection Normal Tape Capabılity Chrome Tape Capabılity
Transport
Transport
Mechanical Tape Loading Auto Stop Sìngle Capsŧan Transport Belt Drive (Capsŧan)

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Last update on Dec 3, 2024 1:49:13 PM CET

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