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 CS 508

 The Dual 508 Extraordinary performance at a surprisingly affordable price.
Single-play, Vario-belt drive turmtables.
 Dual Exclusive Features:
ULM tonearm and cardridge system; less than 8 grams total effective mass.
New XM300 allow tonearm increases rigidity, reduces resonance.
Tunable acoustic isolators minimize acoustic feedback and external shock.
Vario-belt drive with hightorque synchronous motor.
HDC (High Damping Compound) housing provides high internal damping and suppresses external interference.
Unique dust-cover hinges allow placement close to rear wall.
 Unique Vario-Belt Drive
The 508 also feature Dual's unique, patented Vario-belt drive system with high-torque synchronous motor, Vario-pulley and precision-ground belt.
Speeds can be changed even while the platter is rotating, and the belt is never twisted or distorted. Speeds are adjusted by expansion.
 The moment the ULM tonearm touches down on your favorite record, you will appreciate what Dual engineers have accomplished. You will hear a purity of tone that has never before emerged from the grooves. Even if the record is warped.

ULM : Ultra Low Mass
ULM is Dual's exclusive Ultra Low Mass tonearm and cartridge system with total effective mass less than 8 grams. That's less than half the mass of conventional tonearm and cartridge combinations.  This major breakthrough by Dual has been acclaimed throughout tha audio industry, especially by the independent test labs. These labs have begun to use warped records as "real-life" test instruments.
Specifications CS 508
Type:  Semi-automatic
Drive System:  belt-drive
Motor: SM 100-1, 16-pole synchronous motor
Platter Mass/Diameter (non-magnetic, removable):  0,9 kg / 304 mm ø
Speeds:  33 and 45 rpm
Pitch Control (at both platter speeds):  6% (adjustment range at 33 rpm)
Speed Control:  with illuminate stroboscope for  all platter speeds
Sensitivity of the Illuminated stroboscope for 0,1% Speed deviation:  50 Hz = 6;  60 Hz = 7,2 (division markings per minute)
Wow and Flutter [DIN/WRMS]:  ±0,07% / ± 0,04%
Signal-to-Noise Ratio (DIN 45 500):
Rumble Unweighted : 48 dB
Rumble Weighted : 70 dB
Tonearm:  ULM distortion-free, aluminum tubular tonearm in gimbal 4 point tip bearing
Effective Tonearm Lenght:  221 mm
Effective Tonearm Mass:  5,6 g
Offset Angle:  24° 30'
Tangential tracking Error:  0,15°/cm
Tonearm Bearing Friction (reffered to stylus tip):  0,07 mN (0,007 p)
Recommended Tracking Force:  2,5 mN (0,25 p)
Total Capacitance:  160 pF
Starting Time (until the rated speed is attained):  2 - 2,5 s at 33 rpm
Main Voltages:  110 - 125 V. 220 - 240 V, 50/60 Hz
Power Consumption:  8 Watt
Dimensions (W x H x D):  440 x 137 x 390 mm (17-1/2" x 5-1/4" x 15-3/16")

Finish:  Satin-metalic

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