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





Denon DR-330 cassette deck

 

 

Denon DR-330 Features:

3-head tape Tension Servo System Stereo Cassette deck

Denon's new tension servo semsor maintains optimum tape tension

F-alloy combination head offers wide frequency response 25 Hz - 21 lhz (±3 dB), high sensitivity and low distortion. Quartz locked PLL servo motors drivers the capstan for higher tape transport stability

Double Dolby noise reduction system

 

Specifications

Type:  Vertical tape loading 4-track, 2-channel stereo

Heads: 

1 x Record/Playback F-alloy head

1 x Erase double gap Ferrite head

Motors:

Capstan :  1 x Quartz Lock PLL DC servomotor

Reel :  1 x DC motor

Tape Speed:  4,8 cm/sec

Fast Winding/Rewinding Time:  approx. 85 sec (C-60 cassette)

Recording Bias:  appox. 85 kHz

Overal Signal-to-Noise Ratio (at 3% T.H.D. level):  more than 67 dB

Overal Frequency Response:

Metal Tape :  25 - 21,000 Hz (at - 20 dB)

CrO₂ Tape :  30 - 20,000 Hz (at - 20 dB)

FeCr Tape :  30 - 19,000 Hz (at -20 dB)

LH Tape :  30 - 19,000 Hz (at -20 dB)

Channel Separation:  more than 40 dB (at 1 kHz)

Crosstalk:  more than 65 dB (at 1 kHz)

Wow and Flutter:  less than 0,04% WRMS

Inputs Sensitivity/Impedance

Microphone :  0,35mV (-67 dB) / 10 k

Line :  70 mV (-21 dB)/ 50 k

Outputs Level/Impedance

Line :  775 mV (0 dB)/ 10 k

Headphone ;  1,2 mW/ 8   - 2 k

Power Requirements:  110- 120, 220-240 V, 50/60 Hz

Power Consumption:  25 W

Dimensions (W x H x D):  434 x 117 x 300 mm

Weight:  7,0 kg

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