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





NAD 6325 cassette deck


NAD Cassette Deck model 6325 features
Dolby B and C
CAR Circuit Optimizes Recording for Mobile Environment
Play Trim
Full Logic Transport

Specifications
Speed Accuracy:  +1%
Wow and Flutter: 
less than 0,06% (JIS wtd RMS)
less than 0,1% (DIN wtd. Peak)
Frequency Response:  35 Hz - 16 kHz +3 dB (Dolby NR Off)
Harmonic Distortion:  varies with recording level typically less than 0,3% at -10 dB
Total Harmonic Distortion at 0 dB:
Normal Tape :  less than 1,0 %
CrO₂, Metal Tape :  less than 1,5%
Signal-to-Noise Ratio (ref.3% T.H.D. at 333 Hz CC1R/ARM weighting):
Dolby off :  56 dB
Dolby B :  66 dB
Dolby C :  76 dB
Channel Separation:  40 dB at 1 kHz (35 dB broadband)
Erasure:  better than 70 dB at 1 kHz
Input Sensitivity /Impedance:  40 mV/10 k Ω
Maximum Input level:  25 V
Output Level at 0 dB:  500 mV
Output Impedance:  1000 Ω
Power Requirement:  120, 220, 240 V AC 50/60 Hz
Power Consumption:  23W at 120 V AC
Dimensions (W x H x D):  420 x 122 x 270 mm (16,5" x 4,8" x 10,6")
Weight (net):  4,4 kg (9 lb 13 oz)

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