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





Aiwa AP-D60 turntable

Direct-Drive Turntable

One of the world's slimmest at just 71 mm in overall height, the AP-D60 incorporates Aiwa's new "Linear direct-drive" motor for reduced wow and flutter, low rumble.

 

New "Integrated Tonearm" system

Because headshell, cartridge and tonearm have been designed for maximum compatibility, this new system offers a number of advantages over conventional models. Lowered mass of the integrated unit effectively increases compliance, while at the same time lowering the tonearm's resonance "Q: to minimize adverse effects of record warp frequency.

 

Linear DD motor

Unlike previous direct drive designs which place the motor beneath the platter spindle, the AP-D60's unique construction drives the platter by means of alternating current generated by a ring of magnets on the platter's outer adge. This enables space reduction and provides smooth rotation with a minimum of vibration.

 

Automatic record size selection

A photoelectric sensor mechanism below the turntable mat detects the size of the record and relays this information to the tonearm mechanism. This system ensures that the stylus will be protected from the kind of "accidents" to which non-thinking automatic turntables are so prone.

 

Plus Features:

Full front panel control design

Adjustable pitch control with stroboscopic indicators

Auto-repeat facility

Solid, anti-howling cabinet material

Removable dust cover

 

Specifications

Drive System:  Direct drive system

Motor:  2-phase 120-pole linear motor

Turntable Platter:  Aluminum diecast

Platter Diameter:  304 mm

Platter Weight:  1,0 kg

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  0,035% WRMS

Signal-to-Noise Ratio :  70 dB (DIN-B)

Tonearm Section:

Type:  Straight tonearm

Effective Arm Length:  215 mm

Overhang:  15 mm

Tracking Error:  +3,5°;  -1,1°

Offseet Angle:  22,5°

Cartridge

Type:  Moving magnet (MM) type

Frequency Response :  20 - 20,000 Hz

Output Voltage:  3 mV

Separation:  18 dB (1 kHz)

Stylus:  0,5 mil diamond

Stylus Presure:2,0 g (Normal)

General Semiconductor:  22 Transistors; 14 Diodes; 2 FET; 3 ICs

Power Requirements:  AC 220 v, 50/60 Hz

Power Consumption:  5 W

Dimensions (W x H x D):  420 x 71 x 375 mm

Weight:  5,0 kg

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