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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





Denon DP-50F turntable

Model DP-50F has fundamentally the same mechanism as that of the DP40F. It is an automatic record player equipped with the phono motor of higher performance to attain the rotational characteristics equivalent to that of the state-of-the-art. Manual record player, and at the same time, the operational flexibility is further improved.

 


Newly developed electronically servo controlled tonearm truthful to the will of the listener

DP50F is equipped with a new mechanism of electronically servo controlled tonearm, the fruit of all Denon's servo technology. Without ever touching the tonearm, most delicate operation can be accomplished; you can select the program, or get the head of a band with ease and accuracy smoothly and without a touch of doubt.

The mechanism is, when the position selector on the front panel is turned, the special MC type angular control motor is servo controlled, and the arm can be smoothly moved to any optional point on the record disc. Furthermore, as this auto mechanism is of non-contact type, the sensitivity of the tonearm itself is not affected at all. No trickly movement results even if the arm is touched while it is being moved.

 

Convenient self-illuminating push button memorizing the record size for the convenience of the listener.

The DP50F is equipped with one-touch push button to handle locating the program head of 30 cm/17 cm record disc as well as with the positions selector. Just press one of the self-illuminating record selecting switches and than the Start switch. The tonearm moves smoothly to the position of the disc size selected and starts playing. No need to operate the position selector, quick and accurate record playing can be enjoyed.

This operation is easy to release. Just turn the locate switch On (self-illuminating type with the orange lamp to prevent misoperation). With this switch, yuo can accomplish the free operation of the position selector just as with the DP40F.

 


Specifications

Drive System:  Direct-drive by AC servo-motor

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  0,015% WRMS

Rumble:  less than -75 dB (DIN B)

Rise Time:  less than 1,5 sec, to reach 33-⅓ rpm

Platter:  Casted aluminum, 300 mm diameter

Motor:  AC servo motor

Speed Control System:  Speed servo control by frequency detection system combined with phase control system with reference to the quartz crystal oscillator.

Tonerarm

Type:  S-shaped, static balance type with dynamically damped system

Automatic Mechanism:  Electronically servo controlled

Effective Lenght:  244 mm

Stylus Force Range:  0 - 2,5 g/rotation; 0,1 g direct reading

Acceptable Weight of Cartridge:  15 - 21 g (including shell)

Headshell:  Impact molded rigid light metal, 9 g (net)

Output Cord:  Low capacitance cord. Approx. 1,2 m

General

Separate Step-Down Power Transformer:

Input:  AC 117, 220, 240 V 50/60 Hz

Output AC 100 V, 50  VA

Weight: approx. 2,9 kg

Power Requirements: AC 100 V 50/60 Hz

Power Consumption:  19 W

Dimensions (W x H x D):  493 x 438 x 160 mm

Weight:  12 kg


 

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