Sony TC-2350SD (1975)

A stereo cassette deck with Dolby NR and an upright, see-through design, released by Sony in 1975.

Overview

The Sony TC-2350SD is a stereo cassette deck from 1975. It was part of Sony's first upright, see-through deck series. The transport is vertical, so the cassette stands upright during playback. It handles Fe-Cr, CrO2, and normal tapes through a 3-step tape selector that adjusts bias and equalizer independently. The deck has Dolby noise reduction, a limiter recording system developed by Sony, and an auto shut-off mechanism. It also has a 3-digit tape counter, illuminated level meters, and a tape remaining light.

Specifications

Tape speed	4.8cm/s
Track system	4-track 2-channel stereo
Recording time	120 minutes round trip (when using C-120)
Recording bias frequency	105kHz
Overall signal-to-noise ratio	54 dB (peak level)
Dolby on improvement	5 dB improvement (1 kHz), 10 dB improvement (5 kHz or more)
Overall strain rate	1.7%(Fe-Cr)
Frequency characteristic (Fe-Cr)	30 Hz ~ 16kHz/50Hz ~ 15 kHz ± 3 dB
Frequency characteristic (CrO2)	30 Hz ~ 16kHz/50Hz ~ 15 kHz ± 3 dB
Frequency characteristic (Normal)	30 Hz to 14 kHz
Wow and flutter	0.09%wrms
Input terminal (Mic)	2 standard jacks, Minimum input level: 0.2 mV, For Low Impedance Microphone
Input terminal (Line)	2 pin-jacks, Minimum input level: 0.06 V, Input impedance: 100k Ω or more
Output terminal (Line)	2 pin-jacks, Specified Output: 0.435 V (at 100k Ω load), Load impedance: 10k Ω or more
Output terminal (Headphone)	One stereo headphone jack, Load impedance: 8 Ω
Recording and reconnector	Input impedance: 10k Ω or less, Output impedance: 10k Ω or less
Semiconductor used	Transistor: 22, IC: 2, Diode: 8 pcs
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	6W
External dimensions	Width 360 x Height 145 x Depth 285 mm
Weight	5.4kg

Design

The TC-2350SD loads the cassette vertically, as part of Sony's first see-through deck series. It uses an F & F (ferrite & ferrite) head and a DC servo motor with a frequency generator for tape drive. The 3-step tape selector sets bias and equalizer independently. Other features are a Dolby NR system, a limiter recording method developed by Sony, a timer standby switch, a 3-digit tape counter, illuminated level meters, a tape remaining light, and an auto shut-off mechanism.

Product Family

The TC-2350SD is listed alongside other Sony cassette decks: the TC-3250 SD, TC-4250 SD, TC-4260 SD, TC-4300 SD, and TC-4350 SD.

Market

The Sony TC-2350SD had an original price of ¥56,800 in Japan at release.

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