The Tandberg
Series TCD 300 (1972) Stereo is an entirely new cassette tape deck which meets the
specifications set forth in DIN standard 45500 for high fidelity equipment to
full satisfaction. Designed and
manufactured at the Tandberg Radiofabrikk in Norway, Series TCD 300 meets the
stringent quality requirements imposed on all Tandberg tape machines.
Specially
Features:
Complies
with high fidelity specifications set forth DIN 45500 Standard.
Hot pressed
ferrite heads.
Dolby noise
reduction system.
3 motors
provide fast forward/rewind and precise record/playback.
Hysteresis
synchronous drive motor.
Dual capstan
closed loop ensures ideal tape handling and maximum stability.
Two
illuminated peak reading equalized recording and playback indicators.
Minimum wow
and flutter.
Low
Noise/CrO₂ Tape Switch.
Electronic
Controls.
Microphone
preamplifiers.
Linear
motion potentiometers for input levels.
Automatic end-stop.
Wall
mountable and horizontal or vertical use.
Dual Capstan
Closed Loop Tape Drive
This special
tape handling system proides two capstan/pinch-roller systems that determine
the position and orientation of the tape relative to the sound heads. This
system ensures absolutely stable tape handling as well as minimum wow and
flutter. Best possible results are obtained even with worn cassettes.
Three Motors
The Tandberg
Series TCD 300 has three motors; one hysteresis synchronous motor and two Dc
reel motors. The 2 separate winding motors make it possible to reduce the
full-length winding time for a C60 cassette to about 40 seconds.
The tape
handling mechanism feature rugged design and construction to assure excellent
stability and reliability. Motors turn off automatically at end of tape for
both recording/playback and fast forward/rewind, and the pinch rollrs disengage
tape. This eliminates risk that the tape will remain under pressure or in
tension while the tape deck is not in use, and thereby riun the cassette.
Sound Heads
Because the
sound heads used in Series TCD 300 are made of hot-pressed ferrite they can be
guaranteed against wear throughout the service life of the tape deck.
Dolby System
The Tandberg
TCD 300 Stereo features a built-in Dolby noise reduction system. This system
reduces tape noise by about 10 dB relative to conventional systems and enables
the Series TCD 300 to satisfy the signal/noise ratio requirements set forth in
DIN 45500 standard. The Dolby system is of special importance in a cassette
tape machine for four reasons: tape noise is high, tape are narrow, magnetic coatings are thin
and tape speed is low. The Dolby system can be switched on and off.
Peak Reading
Metters
Series TCD
300 is provided with peak reading meters that show peak recording levels.
Levels are regulated with a linear motion potentiometer. These meters also show
the level of the pplayback signal.
"Spec.
Tape" Switch
The Tandberg
Series TCD 300 is compatible with the most modern types of tape. This
two-position selector switch can be set either for low noise, high output (LH)
tape and for chromium dioxide (CrO₂) tape. CrO₂ switch
position makes all four adjustment necessary for optimum recording with this
kind of tape; record equalization, record bias, play equalization and erase
current.
Specifications
Tape
Speed: 1-7/8" / sec. (Speed Accuracy ±1%)
Frequency
Response:
LH ; 30 -
15,000 Hz
CrO₂ : 30 -
16,000 Hz
Signal-to-Noise
Ratio:
LH Tape,
Normal Position/with DOLBY :
51 / 59 dB
(IEC A-curve,3% THD)
48 / 52 dB
(IEC Linear RMS, 3% THD)
45 / 53 dB
(DIN 45511 unweighted)
45 / 50 dB
(DIN 45511 weighted)
CrO₂ Tape, Normal Position/ with DOLBY
54 / 62 dB
(IEC A-curve,3% THD)
50 / 52 dB
(IEC Linear RMS, 3% THD)
48 / 56 dB
(DIN 45511 unweighted)
48 / 50 dB
(DIN 45511 weighted)
Wow and
Flutter: 0,15% WRMS
Crosstalk
Attenuation (by 1 kHz):
Side 1 -Side
2 : better than 60 dB
Track 1 -
Track 2 : better than 35 db
Total
Harmonic Distortion:
From Rec Amp
(by 0 dB impact) : less than 0.5%
From
Playback Amp (by 0,775 V) : less than 0.3%
From Tape (
by 0 dB rec level) : less than 3.0%
Inputs
Sensitivity/Impedance:
Amplifier,
Tuner : 8 mV/47 k Ω (Max. Input by
400 Hz : 0,8V)
Yape
In : 40 mV/100 k Ω (max. Input by 400
Hz : 4 V)
Microphones
: 0,1 mV/ * (Max. Input by 400 Hz : 10 mV)
(* Impedance customized dynamic microphone with an impedance lower than 700 Ω)
Outputs
Impedance/ Voltage (Tape Out and Amplifier/Radio in parallel): 10 k Ω/0,775 V (unloaded)
Semiconductors: 47 Transistors; 2 FETs
General
Power
Requirements: 230 V, 50 Hz
Power
Consumption: 34 W
Dimensions
(W x H x D): 430 x 105 x 230 mm
(16-7/8" x 4-1/8" x 9-1/14")
Weight: 6,5
kg (14,5 lbs)
Finish
Cabinet: teak, rosewood or oak