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

DUAL 1225 (1974)

DUAL 1225
Function and regulation:
Operation in single and multi play mode
Balancing of the tonearm
Setting of the stylus pressure
Anti-skating mechanism
Cue control shock-free
Pitch control and calibration of Pitch control

DUAL CS 18 valnut model
Dimensions: 364 x 146 x 312 mm
Weight: 5,7 kg

Technical data
Power supply: AC, 50 /60 Hz, changeable by changing motor pulley
Power supply voltage: 110-130 V and 220-240 V, changeable
Drive: 4-pole Dual asynchronus motor with verticable adjustable drive pulley
Power consumption: ‹ 10 watts
Current drain: 64 mA approx. at 220 V, 50 Hz; 115 mA, at 110 V, 60 Hz
Platter: 1,45 kg, 270 mm diameter
Turntable speeds: 33 and 45 rpm
Automatic tonearm set-down coupled to speed selection
Pitch control variation: adjustment range of approx. 1 semitone (6%) at both turntable speeds
Speed accuracy deviation: ‹ ±0,15 %
Rumble: unweighted › 37 dB, weighted › 56 dB
Tonearm: Torsion-resistent tubular aluminium tonearm in self-adjusting pivot bearing
Cartridge Holder: removable, accepting any piezo-electric cartridges with ½"mounting and a weight from 2 to 10 grams (including mounting hardware)
Stylus pressure: from 0 (zero) to 5 grams infinitely variable, operable from 1.0 gram stylus pressure up.
Cartridge: see separate data sheet
Dimensions: 329 x 274 mm (+ 20 mm tonearm overhang)
Weight: approx. 4,0 kg

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