What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Mitsubishi M-T01 cassette deck


In designing the cassette tape deck for our microcomponent series we have not been too concerned with reducing the size; instead, while maintaining the same attractive, warm champagne gold hairline finish we have designed it to the same dimensions as the M-A01 power amplifier
Front Loading Format
Rather than adopt the horizontal insert type of cassette loading often used on compact cassette formats ,  inconvenient for tape head cleaning and subject to tape snarl-ups, the M-T01 features frontal loading, with full tape visibility and a hinged tape head cover that protects the head assembly from dust and higes down for easy access.
Feather-Touch Microswitch Controls
For smooth and rapid switching between different operatingirectly. To go from fast rewind into the play mode  just press the appropriate feather touch microswitches; the changeover is almost instantaneous, with no tape spillage. All operations are just as simple and foolproof.
ASPS
Mitsubishi's automatic spacing pause system ASPS puts a few seconds of silent spacing between different music selections without having to alter recording levels or go out of the recording mode.
Closed-Loop Dual-capstan Drive
For the last word in stable tape drive, greatly reducing drop-outs and changes in level due to variations in tape tension over the heads the tape is held between two capstans and their corresponding pinch rollers on the take-up and supply sides, unlike the normal single-capstan plus pinch roller combination. The mechanism itself is mounted on a high precision die-cast metal base, and is highly resistant to vibration and other harmful influences. This, and a phase locked loop (PLL) with a quartz-crystal oscillator as the standard for controlling the speed of the DC servomotor, bring wow and flutter down to a completely negligible 0,05% WRMS. The recording/playback head is of sendust, with excellent magnetic and wear-resistant properties, and is largely responsible for the good frequency response.
Peak level Meters
The fast-response peak reading meters on the M-T01 make it easy to achieve recordings with the maximum of Signal-to-Noise ratio and the minimum of distortion by giving accurate indication of critical peak signal levels.
Specifications:
Drive mechanism:  Closed loop dual capstan system
Noise Reduction System:  Dolby noise reduction system
Tape Speed:  4,75 cm/sec (1-7/8"  IPS)
Recording System:  AC bias (85 kHz)
Erasing Systen:  AC erasing (85 kHz)
Tracks:  4-track, 2-channel
Playback Equalization
Normal Position :  3,180u sec/ 120 µ sec
Fe-Cr Position :  3,180u sec/ 70 µ sec
Special Position :  3,180u sec/ 70 µ sec
Input Level /Impedance
MIC :  0,3 mV/1,8 k Ω
Line :  100 mV/120 k Ω
Output level/Impedance
Line :  420 mV/22 k Ω
Headphones :  1,5 mW/8 Ω
Motors:  PLL DC servo motor;  DC governed motor
Magnetic Heads
Record/Playback :  Sendust alloy
Erase :  Ferrite
Wow and Flutter:  0,045% (WRMS) ±0,09% (Wp-p, DIN)
Signal-to-Noise Ratio:
Weighted (Dolby NR Out):  56 dB (RMS); 52 dB (DIN)
Weighted (Dolby NR In ) :  64 dB (RMS)
Frequency Response:
Normal Position :  30 Hz - 15 kHz (40 Hz to 13 kHz ±3 dB)
Fe-Cr Position :  30 Hz - 17 kHz (40 Hz to 15 kHz ±3 dB)
Soecial Position : 30 Hz - 17 kHz (40 Hz to 15 kHz ±3 dB)
Power Consumption: 20 W
Dimensions (W x H x D):  270 x 140 x 246 mm (10-5/8" x 6-1/2" x 9-11/16")
Weight:  6,3 kg (14 lbs)

Nessun commento:

Posta un commento