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NAD C 588 Turntable

NAD is well known for innovative, high performance, yet affordable, turntables. While the basic operation of a turntable seems simple, extracting all the musical energy from the record grooves without exciting destructive resonances requires both science and art. Let’s take a closer look at each of the elements of the C 588 with an explanation of the choices we made.

ELECTRONIC SPEED CONTROL

Having exact pitch (speed) is important, but human hearing is much more sensitive to momentary changes in speed which we express with the terms Wow and Flutter. As its name sounds, Wow is a slow cyclical speed variation. The most severe example is the sound of a severely warped record, where the stylus travels faster on the rising side of the warp and slower on the descending side, causing abrupt changes in musical pitch. Flutter is what we call very fast and small variations that are usually generated by the motor. The C 588 addresses both of these problems with proven and effective solutions. A specialized, high precision, synchronous clock motor is both very smooth and accurate, especially when driven from a stable AC voltage. To ensure a clean and stable AC voltage we isolate the AC Mains by first converting it to a clean DC voltage, and then electronically generating the precise AC frequency to regulate the synchronous motor. Using a specially formulated belt to drive the platter further filters and isolates any remaining vibration. All rotating parts are made from aluminum alloy machined to very tight tolerances to eliminate any eccentricity or vibration in the drive system.

FEATURES & DETAILS

Belt Driven Turntable 33/45
10mm Glass Plater with Felt Pad
Precision Alloy Sub Platter
Precision AC Motor
Isolated AC Power Supply with Universal Voltage
9” Carbon Fibre Tonearm with Fixed Head Shell
Ortofon 2M Red Cartridge Preinstalled
Vertical Tracking Angle and Azimuth Adjustment
Rigid MDF Plinth
Metal Feet with Tuned Isolation
Low Resonance Dustcover
Detachable High Quality RCA Cable with separate Ground

TONEARM AND CARTRIDGE

The C 588 features a custom designed carbon fiber tonearm shaft with a fixed metal head shell and features a decoupled counterweight and magnetic anti-skate compensation. An Ortofon 2M Red cartridge is factory installed and offers superb tracking and a delicately nuanced full range sound. The C 588 uses a longer than usual 9” tonearm to optimize overhang and reduce the tracking angle error. To perfectly align the stylus we include adjustments for azimuth and vertical tracking angle, and include a gauge to calibrate the alignment, a rarity at this price point.

CLOSING THE TRIANGLE

To fully realize the micro-dynamics of music requires a very tight mechanical coupling of the platter and the tonearm. This forms a triangle, as vibrations can travel from record being played, to the platter, through the shaft and bearing to the base (plinth), up the arm mount through the arm pivot and down the arm to the cartridge and stylus. There are many separate parts in this path and some of them are required move relative to one another through mechanical bearing interfaces. If there is any play in these mechanical interfaces musical energy will be lost. This why NAD has paid strict attention to precision machining, assembly, and testing that is so important in a turntable.

RESONANCE CONTROL AND ISOLATION

Reducing all spurious vibrations to a minimum is critical to getting the best result when playing vinyl. Since these vibrations can come from various sources, both internal and external, the materials and dimensions must all be carefully calculated reduce and balance all the resonances to prevent a buildup of energy at particular frequencies. To isolate external vibrations from the loudspeakers or footfalls bouncing the floor, we use a massive MDF base with specially tuned vibration damping feet, along with a thick non-resonant dust cover. The choice of glass platter, felt pad, MDF base, and carbon fiber tonearm, were carefully considered to work together to limit and reduce spurious vibration.

GENERAL SPECIFICATIONS

Nominal speed	33/45 rpm, manual speed change (78 rpm possible with special pulley
Speed variance	33 rpm: < ± 0.35 %, 45 rpm: < ± 0.30 %
Wow and flutter	<0.01% (ref. 1 kHz, Audio LPF)
Signal/Noise ratio	– 70 dB
Downforce range	0 – 30 mN 0 – 3.0 grams
Supplied counterweight system	95dB
Supplied counterweight system	Counterweight for cartridges: 6 – 13 g
Voltage	Universal switch mode power supply 15 V DC/0,8 A, 100-240 V AC, 47 – 63Hz
Power consumption	5 W max/ 0.3W standby

TONEARM

Effective tonearm mass	9.5 g
Effective tonearm length	230 mm
Overhang	18 mm

ORTOFON 2M RED CARTRIDGE

Frequency range	20-22.000Hz
Channel separation	22dB/1kHz
Output voltage	5.5 mV
Recommended load impedance	47 kohms/Amplifier connection: MM-input
Compliance/stylus type	20μm/mN – elliptical
Recommended tracking force	18 mN
Weight	7.2g

DIMENSIONS AND WEIGHT

Gross Dimensions (W x H X D)	17 1/8 x 13 7/16 x 4 15/16” (435 x 340 x 125mm)
Shipping Weight	9.2 kg(20.3 lbs)