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





Sansui SC-1330 cassette deck

Stereo Cassette Deck
A metal tape compatable Dolby  cassette deck with direct cassette loading and record level indicator with an almost instantaneous peak rise and moderate decay. An unusual feature is automatic wind past the leader at the touch of a button. A record mute disables the input  signal while the tape drives, allowing removal of unwanted sounds while recording.
The fluorescent bargraph record level meter is referenced to0db , representing the signal peaks, rether than the more common 0 VU, though 0 VU is also indicated on the indicator scale. There are selectors for Normal, CrO₂, FeCr and Metal tape bias and equalization. Other features include; end of tape stop/disengage, optional timer controlled start or record, reset counter, and record mute.

Controls:
Concentric-clutched L & R record level
Ganged L & R output level
Inputs/Outputs
Line, Microphones / line, Headphones
 Specifications
Track:  4-track; 2-channel stereo
Tape Speed:  4,8 cm/s (1=7/8 ips)
Heads:  record/Playback; FH Head Erase; Double Gap Ferrite Head
Motor:  Electronically Controlled DC Motor
Wow and Flutter:  within 0,05% WRMS
Fast Wind Time:  approx. 75 sec. C-60
Frequency Response (Rec/Pb)
Normal Tape (-20 VU) :  20 to 18,000 Hz (20 to 15,000 Hz ±3 dB)
Metal Tape (-20 VU) :  20 to 18,000 Hz (20 to 16,000 Hz ±3 dB)
Metal (0 VU) :  20 to 13,000 Hz ±3 dB
Signal-to-Noise Ratio:
Metal Tape (without Dolby NR) :  better than 59 bd (weighted)
Metal Tape (with Dolby NR) :  better than 69 dB (above 5 kHz)
Erasure Factor
MetalTape :  more than 70 dB at 1,000 Hz
Input Sensitivty/Impedance (0 VU, 1 kHz)
Mic :  0,3 mV/200 Ω - 5 k Ω
Line Rec :  70 mV/100 k Ω
Output Level (0 VU, 1 kHz)
Line Out (play) :  390 mV
Phones :  65 mV/8 Ω
Bias Frequency:  85 kHz
Power Requirement
Voltage :  100, 120, 220, 240 V 50/60 Hz
Consumption :  12 W rated
Dimensions (W x H x D):  430 x  160 x 320 mm  (16-15/16" x 6-5/16" x 12-5/8")
Weight:  6,85 kg (15,1 lbs)

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