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





Teac A-510 mkII cassette deck

Controls and Switches
Friction-locked belt driven L&R record level
Ganged output level
Timer control function
Bias and equalization selection
Dolby / MPX filter on-off
Input selection
Record level meter peak hold on-off
Record meter auto/manual peak reading reset
Record level meter brightness [hi/lo]
Counter memory on-off and reset

An outstanding feature of the Teac A-510 Mk II is a peak indicating bar-graph record level indicator with both instantaneous and peak-hold modes. The peak-hold can be programmed to automatically reset after a few seconds, or maintain its value until manually reset. A pre-wired socket allows full-feature remote control with a plug in remote controller. Unit can be timer started in either the record or play mode. It has bias and equalization selectors for normal, high-bias (chrome) and metal tapes and a Dolby noise reduction system. The Teac A-510 MkII also has some useful taping controls; a record mute that can be used while the tape is driving and a "flying start" record switch that allows you to switch to the record mode while the tape is in the play mode. There is also an end-of-tape-stop feature, memory reset counter and timer-controlled record/play to provide maximum operator convenience.

Specifications
Track System: 4-track, 2-channel stereo
Heads: 2 heads, Erase and Record/Playback
Tape Type:  Compact Cassette C-60 and C-90
Tape Speed:  1,7/8 ips (4,76 cm/s)
Motor:  FG servo controlled DC motor
Wow and Flutter:  0,05%
Frequency Response:
Metal Tape :  30 - 18,000 Hz
CrO₂ Tape:  30 - 18,000 Hz
Normal Tape:  30 - 15,000 Hz
Signal-to-Noise Ratio:  56 dB (3%T.H.D.)
Rewind/Fast Forward Time:  approx. 90 sec. C-60
Inputs:
Line 60 mV/50 k Ω
Microphones:  0,25 mV/-72 dB (200 Ω or more)
Outputs
Line:  0,3 V (load impedance of 50 k Ω or more)
Headphones Jack:  8 Ω
Power Requirement:  100/117/220/240 V AC 50/60 Hz
Power Consumption:  29 W
Dimension (W x H x D):  440 x 147 x 345 mm (17-5/16" x 5-13/16" x 13-9/16")
Weight:  9,5 kg (20-15/16 lbs)

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