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Dolby B NR Dolby C logo DBX Metal Tape

This Marantz SD440 is a auto-reverse stereo cassette deck with Dolby B and C and DBX noise reduction, it was first sold by Marantz in 1984 with a recommended retail price of USD $330.

The main features of the Marantz SD440 are: 2 heads, tape type selection and capable of handling normal, chrome and metal tapes.

Dolby C-type used in the SD440 provides 20 dB of noise reduction above about 1,000 Hz, fully doubling the amount given by B-type. Dbx Type II found in the SD440 is a simplified version of the Type I noise reduction system. The dbx Type II system was designed to be used with systems with limited bandwidth such as cassette based recorders and also uses a simple 2:1:2 compander to reduce noise.

Compact Cassette

Historic events

1984 Seiko Instruments U.S.A. Inc. displays the first wristwatch computer, with a 10-character, 4-line LCD.

Features of Marantz SD440

Electronics
Electronics
Record Protection
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
HighCom NR
Noise Reduction
Dolby-B Noise Reduction Dolby-C Noise Reduction DBX Type II Noise Reduction
Power
Power Requirements
Alternating Current
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Normal Tape Capabılity Chrome Tape Capabılity Metal Tape Capabılity
Transport
Transport
Auto Reverse Auto Shutoff

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Last update on May 6, 2024 6:21:22 PM CEST

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