Denon DR-M3 cassette deck

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-M3 cassette deck

3-Head Microcomputer-controlled Tape Tuning System Stereo Cassette Deck

Features

Silent operation with smooth operational feel

Wide scale 2-color FL peak meter with automatic peak hold previsions

A microcomputer-controlled tape tuning system, automatically tunes itself for the optimal recording characteristics

A cam-servo motor with a microcomputer control rotary encode checking system

Improved tape tension servo sensor mechanism, much more stable tape head contact and tape travel

Computer Tuning (CTS)

This tuning system automatically sets the equalizer and recording sensitivity, both of which are important to maximizing the performance of various tapes and to make high quality recordings, the tuning time is only 5 seconds; recording chances are not missed. When the cassette is loaded, the auto tape selector sets the deck to the standard optimum condition. Strictly speaking, however, the recording sensitivity and frequency characteristics of the tapes vary, depending on its type.

The computer tuning system allows the maximum performance of the tape to be heard and at the same time ideally corrects the frequency characteristics to a flat and wide range characteristic.

Specifications

Type: Vertical tape loading 4-track 2-channel stereo cassette tape deck

Heads:

1 x SF Record/Playback combination head

1 x Double gap ferrite Erase head

Motors

For capstan : 1 x FG servo DD motor for

For Real Winding : 1 x DC motor

Tape Speed: 4,8 cm/sec

Fast Forward /Rewind Time" approx. 90 sec. C-60 cassette tape

Recording Bias: approx. 105 kHz

Signal-to-Noise Ratio Overal (at 3% T.H.D. level): Dolby C ON more than 73 dB (CCIR/ARM)

Frequency Response Overal (at -20 dB Metal tape) : 25 - 21,000 Hz ±3 dB

Frequency Range (at -20 dB Metal tape): 20 - 23,000 Hz

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

Crosstalk: better than 65 dB (at 1 kHz)

Woa and Flutter: less than 0,027% WRMS

Input

Microphone : 0,35 mV (-67 dB) with input level control at maximum

Input Impedance : 10 k Ω unbalanced

Line : 77,5 mV with input level control at maximum

Input Impedance : 50 k Ω unbalanced

Output

Line : 775 mV (0 dB) with output level control at maximum (with 10 k Ω load, recorded level of 200 Pwb.mm)

Headphone : 1,2 mW with output level control at maximum (optimum load impedance 8 Ω to 2 k Ω )

Accessories : Parallel PIN cord x 2, cleaning stick set x 1

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

Power Consumption: 22 W

Dimensions (W x H x D): 434 x 115 x 286 mm

Weight: 5,7 kg

Pagine

What is stereo?