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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





Rotel RD-865

Rotel cassette deck RD-865
All four Rotel cassette decks are carefully designed to match compatibly with the other Rotel components. Very good sound quality. Reliable mechanisms. Useful controls and buttons. Solid high performance.
The RD-865 incorporate two motor electronic full logic cassette controls, have automatic tape selections for metal, special (chrome) and normal tapes, and are equipped with Dolby B/C and Dolby B/C/HX pro noise reduction systems respectively. For the level display, the RD-865 a fluorescent indicators with a 4-digit digital tape counter.
Each model comes enclosed in an extruded aluminum front panel and a rigid metal chasis. All for better musical performances.
  
Specifications
Heads:
Rec/Play :  Hard Permalloy
Erase :  Ferrite core
Track:  4-track / 2-channel
Tape Speed:  4,8 cm/sec
Motor:  Electronic DC Governor
Wow and Flutter:  0,2% (DIN); 0,06% (WRMS)
Distortion (Rwx/Pb, 400 Hz):  1,0% (Metal)
Frequency Response(-20 dB):
Normal LH tape :  30 to 16,000 Hz ±3 dB
Special Tape :  30 to 17,000 Hz ±3 dB
Metal Tape :  30 to 18,000 Hz ±3 dB
Signal-to-Noise Ratio (WTD), 0 dB=770 mV, CrO₂):
Dolby NR in :  64 dB (B type); 72 dB (C type)
Dolby NR out :  55 dB
Input Sensitivity/Impedance:
Line :  50 mV/33 k Ω
Output Level/Impedance
Line :  770 mV/1,5 k Ω
Fast Wind Time (C-60):  110 sec
Tape Selector  [BIAS / Equalizer]:
Normal LH Tape :  100% / 120 us
Special Tape :  160% / 70 us
Metal Tape :  220% / 70 us
Power Requirement:  120 V, 220 V, 240 V, 50/60 Hz
Power Consumption:  30 watts
Dimensions (W x H x D):  444 x 115 x 352 mm (17-15/32" x 4-17/32" x 12-13/16")
Weight:  5,6 kg (12,32 lbs)


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