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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





Aiwa AD-1300 deck


Stereo Cassette Deck with Dolby System
Aiwa AD-1300
Features:
Equipped with Dolby circuit greatly improving the Signal-to-Noise Ratio
Provided with Quick Review/Cue Control for speedy searching the desired tape point
Full Automatic shut-off system
Electronically Controlled DC Servo Motor with Frequency Generator
Slight piano-touch key operation and separate Recording/Playback Volume Controls
Machanical pause convenient for temporary stop and stand-by for recording
Equipped with the newly developed long-life Ferrite Guard head
Three step tape selector switch for the type of tapes used
Index Counter with reset button
Expanded Scale VU Meters
Dubbing DIN-to-DIN Facility
Specially designed Heavy-weight Flywheel
Smoky Plastic Dust cover

Specifications
Type:  Hi-fi stereo cassette tape deck
Track:  4-track, 2-channel stereo
Circuit:  31 Transistors; 2 FET and 23 Diodes
Frequency Response:
Low Noise tape :  30 -14,000 Hz
CrO₂, FrCr Tape :  30 -16,000 Hz
Signal-to-Noise Ratio:  58 dB (Dolby On, CrO₂ tape)
Wow and Flutter:  0,009% (WRMS)
Tape Speed:  4,8 cm/sec (1-14/16 ips)
Fast Fprward and Rewind Time:  120 sec. c-60 tape
Recording System:  AC bias
Erasing System:  AC erasure
Motor:  DC servo motor
Head:  Ferrite Guard Head
Input Sensitivity/Impedance:
Mikrphone :  -72 dB/600 Ω  - 10 k Ω
Line :  -26 dB/100 k Ω
DIN Connecter Sensitivity:  0,1 mV/k Ω
Line Output Level/impedance:  1,1 V/ 10 k Ω  (Dolby level)
DIN Output Level: 1 V
Power Supply:  AC 110 - 120 V/ 220 - 240 V; 50/60 Hz
Power Consumption:  10 W
Dimensions (W x H x D):  407 x 102 x 261 mm (16-1/16" x 4-2" x 10-9/32")
Weight:  5,1 kg (11,22 lbs)