Sony TC-138SD
Dolby B NR

This Sony TC-138SD is a stereo cassette deck with Dolby B noise reduction, it was first sold by Sony in 1975 with a recommended retail price of USD $230 and discontinued 2 years later in 1977.

The main features of the Sony TC-138SD are: 2 heads, mechanical 3 digit tape counter and memory stop, manual tape type selection and capable of handling normal, chrome and ferro-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 TC-138SD are analog needle VU reading meters with peak indicator for easy adjustment of optimum recording level. Mechanical transport controls for reliable TC-138SD transport function selection.

The Dolby-B system reduces tape hiss on tapes recorded on the TC-138SD 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 TC-138SD 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
  • Auto Shut Off
  • Ferrite & Ferrite Head

Historic events

1975 Sony launched the Betamax videocassette recording format.
1976 Sony first publicly demonstrated an optical digital audio disc
1977 Steve Jobs and Steve Wozniak exhibiting the first Apple II

Features of Sony TC-138SD

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors DIN Input/Output Connector Headphones
Display
Display
3-Digıt Mechanical Counter Analog Needle Meters
Electronics
Electronics
Peak Limiter
Cassette Exterior
Exterior
Silver Finish Orientation Left Top Loading Wood Case
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Record Peak Indicator
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter
Controls
Operation
Memory Stop Mechanical Transport Control
Power
Power Requirements
Alternating Current
Preamplifier
Preamplifier
Microphone Level Adjust (Left/Right) 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 Chrome Tape Capabılity
Transport
Transport
Auto Shutoff Mechanical Tape Loading Sìngle Capsŧan Transport Belt Drive (Capsŧan)

Similar to Sony TC-138SD from the period 1975 - 1977

ebay Sony TC-138SD related items currently for sale Last update on Aug 12, 2022 2:22:51 PM CEST