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





Sanyo RD 5009 cassette deck

Sanyo says this RD5009 cassette deck is another "first" because it offers metal tape capability at a very small price. Other features include: Dolby noise reduction circuitry; instantaneous LED bar=graph meters to monitor input levels or playback output; full auto-stop to disengage the mechanism at the end of the cassette tape to protect both the tape and deck transport mechanism; viscous-damped cassette door; mic/line mixing; digital tape counter with reset. The RD5009 is said to deliver a frequency response of 30 to 16,000 Hz ±3 dB with metall tape. Wow and flutter is put at 0,07 WRMS
Specifications
Tape Type:  Metal, CrO₂, Normal
Tape Speed:  4,75 cm/sec. (1-7/8 ips)
Recording System:  AC bias, 1/4 track stereo
Erasing System:  AC erasing, 1/2 track
Wow and Flutter:  0,07%
Frequency Response:
Normall tape :  30 - 10,000 Hz
CrO₂ tape :  30 - 14,000 Hz
Metal tape :  30 - 16,000 Hz
Signal-to-Noise Ratio (for CrO₂ tape)
Dolby On :  60 dB
Dolby Off :  52 dB
F FWD & REW Time:  approx. 90 sec (C-60 cassette)
Input Sensitivity/Impedance
Mic :  0,3 mV/ 400 oh - 10 k Ω
Line In :  50 mV / 50 k Ω
Output level/Impedance
Line out :  0,36 V / 2 k Ω
Headphone :  8 Ω - 10 k Ω
Power Source:  120 V AC, 220 - 240 V AC, 50/60 Hz
Power Consumption:  6 W ( at 120 V)
Dimensions (W x H x D):  400 x 139 x 220 mm (15-3/4" x 5-1/2" x 8-11/16")
Weight:  4 kg (8 lbs, 13 oz)

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