DYNACO PAS-4 Bedienungshandbuch

PAS-4Vacuum Tube PreamplifierOwner's ManualPAS-4 Vacuum Tube PreamplifierRPAS-4INPUT TAPE DUBBINGTAPE MONITORBALANCEVOLUMEPOWERMONOEPLIN INCDVIDE

10WarrantyFor three years from the date of purchase (one1 year for tubes) Dynaco will repair, for the original owner,any defect in materials or workma

11PAS-4 SpecificationsPhono SectionGAIN: 40 dBRIAA ACCURACY: +/- .5 dB from 20 Hz to 20 kHzPHONO OVERLOAD: 500mV RMS @ 1kHzMAXIMUM OUTPUT CAPABILITY:

12C7C6C5C4C2R13R10R6R8R7R5R4R3FB122pF6.49K220pF-3.3V499K3.3uF2M165K1500pF440pF12AX71.37K87632147K249K287KV1400VC110pFV2BR12R11V2AR96DJ86DJ812367830193

1300501B 2 2PAS-4 PREAMPLIFIER19 JULY 94 OFREV PAGE DWG#U1R216C220C219.47 ohm4700uF25VFWB1600V78123W22uF25V35AC221470uF25V545LINELEFT6DJ8V3LINERIGHT6D

14PAS-4 PC Board Parts ListDESCRIPTION DESIGNATORSResistors100 ohm, 1/2W, metal film R201140 ohm, 1/2W, metal film R28, 128221 ohm, 1/2W, metal film R

15PAS-4 PC Board Parts List (cont.)DESCRIPTION DESIGNATORSCapacitors (cont.)10.uF, 25V, alum electrolytic C22222uF, 25V, alum electrolytic C220, 22322

2ContentsIntroduction ... 3Rear Panel Inputs and Outputs ...

3IntroductionCongratulations on your purchase of the Dynaco PAS-4 preamp. This preamplifierwas designed to provide the highest combination of

4Rear Panel Inputs and OutputsInputs - PhonoThese inputs will accommodate "moving magnet" or high output "moving coil"

5OperationTurn-On Delay and Visual IndicatorWhen you turn on the PAS-4, the lamp above the PWR (power) switch glows GREEN and a timer circuitis evoke

6Balance ControlThis adjusts the proportion of left and right channel signals going to the preamp's line level amplificationstage (and therefore

7Tube ReplacementCAUTION: Before replacing tubes on your PAS-4 ensure the AC power cord is un- plugged from its AC(wall) outlet (or that the AC powe

8Alternate Tube TypesIt is true that vacuum tubes made by different manufactures can actually sound different. The amount andtype of sonic differences

9Minimizing Noise in the SystemHum is caused by amplification of the 50 or 60 Hz AC power line signal that is transmitted via thema