dual1228draaitafel维修电器原理图

DuaDual 1228Service ManualEdition July 1974的122Technical dataCurrent typeAC 50 or 60 cycle,with appropriate motor pulleysLine voltage110/130 V and 220/240 V selectorDrive4-pole synchronous motorPower consumption<10 WattCurrent requirementsapprox.64 mA at 220 V 50 cycleapprox.115 mA at 110 V 60 cyclePlatternon-magnetic 1.8 kg (4 Ib)270 mm (10.5 inch.)diameterPlatter speeds33 1/3 and 45 rpm.automatic tonearm setdown coupled to speed selectorPitch controlAdjustment of approx.1 semi-tone (6%)at both platter speedsSpeed checkwith light stroboscope for platter speeds of 33 1/3 and 45 rpm adjustable for 50 or 60 HzWow and flutter<0.09%rated in accordance with DIN 45 507Signal-to-noise ratioRumble signal-to-noise ratio>59dBRumble unweighted signal-to-noise ratio>39dBin accordance with DIN45500TonearmTorsion resistant,aluminum tonearm in universal four-point gimbal suspensionTonearm bearing frictionver tical<0.008phorizontal<0.016pPick-up headRemovable,suitable for acceptance of all cartridges having 1/2"mounting and a deadweight(cartridge holder)of 2-8 grams (including mounting fixtures)Stylus pressureContinuously-adjustable from 0-10 p.reliable as from 0.5 p stylus pressurePick-up cartridgesee separate data sheetWeight4.3kgMounting dimensions andmounting board cut-outsee installation instructionsDual GebruderSteidinger.7742 St.Georgen/Schwarzwald